Station Overview Station Location
Station Number MA-MD-42 Latitude 42.1882
Station Name Holliston 0.8 S Longitude -71.4339
County Middlesex Elevation (ft) 265



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 16 4.32 7.74 31 7.74 31 0.00 0 0 15 1 0.0 0 0
Nov 16 4.45 2.12 30 1.97 28 0.15 2 1 8 4 0.0 0 0
Dec 16 4.34 3.72 31 3.72 31 0.00 0 0 12 2 3.6 4 4
Jan 17 3.80 4.27 31 4.27 31 0.00 0 0 16 2 9.4 3 3
Feb 17 3.54 3.14 28 3.14 28 0.00 0 0 7 2 22.0 6 5
March 17 4.54 2.70 31 2.70 31 0.00 0 0 13 2 13.5 3 5
April 17 4.42 6.05 30 6.05 30 0.00 0 0 17 1 0.0 0 0
May 17 3.74 4.66 31 4.66 29 0.00 2 0 16 4 0.0 0 0
June 17 4.15 5.44 30 5.25 29 0.19 1 1 13 4 0.0 0 0
July 17 3.77 4.08 31 2.72 26 1.36 5 1 10 2 0.0 0 0
Aug 17 3.91 3.59 31 3.44 28 0.15 3 1 5 3 0.0 0 0
Sept 17 3.81 2.32 30 1.85 24 0.47 6 2 10 1 0.0 0 0
Water Year Totals: 48.79" 49.83" 365 days 47.51" 346 2.32" 19 days 6 142 days 28 days 48.5" 16 days 17 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2016 0.85
10/2/2016 0.74
10/3/2016 0.01
10/4/2016 0.01
10/5/2016 0.01
10/6/2016 0.00
10/7/2016 0.00
10/8/2016 0.00
10/9/2016 0.06
10/10/2016 1.54
10/11/2016 0.00
10/12/2016 0.00
10/13/2016 0.00
10/14/2016 T
10/15/2016 0.00
10/16/2016 0.00
10/17/2016 0.00
10/18/2016 0.12
10/19/2016 0.00
10/20/2016 0.00
10/21/2016 0.07
10/22/2016 2.80
10/23/2016 0.12
10/24/2016 0.00
10/25/2016 0.00
10/26/2016 0.00
10/27/2016 0.00
10/28/2016 1.04
10/29/2016 0.03
10/30/2016 0.01
10/31/2016 0.33
11/1/2016 0.00
11/2/2016 0.00
11/3/2016 0.02
11/4/2016 T
11/5/2016 0.00
11/6/2016 0.04
11/7/2016 0.01
11/8/2016 0.00
11/9/2016 0.00
11/10/2016 T
11/11/2016 0.00
11/12/2016 0.00
11/13/2016 0.00
11/14/2016 0.00
11/15/2016 T
11/16/2016 1.26
11/17/2016 T
11/18/2016 0.00
11/19/2016 0.00
11/20/2016 0.12
11/21/2016 0.01
11/22/2016 0.00
11/23/2016 0.00
11/24/2016 0.00
11/25/2016 **
11/26/2016 0.15
11/27/2016 0.00
11/28/2016 0.00
11/29/2016 0.01
11/30/2016 0.50
12/1/2016 0.88
12/2/2016 T
12/3/2016 0.00
12/4/2016 0.00
12/5/2016 0.05
12/6/2016 0.12
12/7/2016 0.12
12/8/2016 T
12/9/2016 0.00
12/10/2016 0.00
12/11/2016 0.00
12/12/2016 0.34
12/13/2016 0.21
12/14/2016 0.00
12/15/2016 0.00
12/16/2016 0.00
12/17/2016 0.17
12/18/2016 0.53
12/19/2016 0.02
12/20/2016 0.00
12/21/2016 0.00
12/22/2016 0.00
12/23/2016 0.00
12/24/2016 0.00
12/25/2016 0.43
12/26/2016 0.00
12/27/2016 0.02
12/28/2016 0.00
12/29/2016 0.00
12/30/2016 0.83
12/31/2016 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.00
1/2/2017 0.00
1/3/2017 0.05
1/4/2017 0.94
1/5/2017 0.05
1/6/2017 0.02
1/7/2017 0.02
1/8/2017 0.64
1/9/2017 0.00
1/10/2017 0.00
1/11/2017 0.26
1/12/2017 0.18
1/13/2017 0.03
1/14/2017 0.00
1/15/2017 0.00
1/16/2017 0.00
1/17/2017 0.00
1/18/2017 0.50
1/19/2017 0.07
1/20/2017 T
1/21/2017 T
1/22/2017 0.00
1/23/2017 0.09
1/24/2017 1.22
1/25/2017 0.14
1/26/2017 0.01
1/27/2017 0.05
1/28/2017 0.00
1/29/2017 0.00
1/30/2017 0.00
1/31/2017 0.00
2/1/2017 0.14
2/2/2017 0.00
2/3/2017 0.00
2/4/2017 0.00
2/5/2017 0.00
2/6/2017 0.00
2/7/2017 0.00
2/8/2017 0.49
2/9/2017 0.00
2/10/2017 1.32
2/11/2017 0.15
2/12/2017 T
2/13/2017 0.81
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.14
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 0.00
2/20/2017 0.00
2/21/2017 0.00
2/22/2017 0.00
2/23/2017 0.00
2/24/2017 0.00
2/25/2017 0.00
2/26/2017 0.09
2/27/2017 0.00
2/28/2017 T
3/1/2017 0.02
3/2/2017 T
3/3/2017 0.00
3/4/2017 0.00
3/5/2017 0.00
3/6/2017 0.00
3/7/2017 T
3/8/2017 0.04
3/9/2017 0.02
3/10/2017 0.03
3/11/2017 0.16
3/12/2017 0.00
3/13/2017 0.00
3/14/2017 0.06
3/15/2017 1.16
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.00
3/19/2017 0.01
3/20/2017 0.00
3/21/2017 0.00
3/22/2017 0.00
3/23/2017 0.00
3/24/2017 0.00
3/25/2017 0.01
3/26/2017 0.03
3/27/2017 0.01
3/28/2017 0.48
3/29/2017 0.67
3/30/2017 0.00
3/31/2017 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2017 1.81
4/2/2017 0.50
4/3/2017 0.00
4/4/2017 0.23
4/5/2017 0.56
4/6/2017 T
4/7/2017 0.92
4/8/2017 0.01
4/9/2017 0.00
4/10/2017 0.00
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 0.05
4/14/2017 0.00
4/15/2017 0.00
4/16/2017 0.02
4/17/2017 0.01
4/18/2017 0.00
4/19/2017 0.00
4/20/2017 0.07
4/21/2017 0.26
4/22/2017 0.33
4/23/2017 0.09
4/24/2017 0.00
4/25/2017 0.01
4/26/2017 0.93
4/27/2017 0.24
4/28/2017 0.01
4/29/2017 0.00
4/30/2017 0.00
5/1/2017 0.05
5/2/2017 0.12
5/3/2017 0.02
5/4/2017 0.00
5/5/2017 T
5/6/2017 1.04
5/7/2017 0.12
5/8/2017 0.02
5/9/2017 0.00
5/10/2017 0.00
5/11/2017 0.00
5/12/2017 T
5/13/2017 0.01
5/14/2017 0.97
5/15/2017 0.48
5/16/2017 0.15
5/17/2017 T
5/18/2017 0.00
5/19/2017 0.12
5/20/2017 0.00
5/21/2017 0.00
5/22/2017 0.05
5/23/2017 0.09
5/24/2017 0.01
5/25/2017 T
5/26/2017 1.20
5/27/2017 0.21
5/28/2017 0.00
5/29/2017 0.00
5/30/2017 **
5/31/2017 **
6/1/2017 0.19
6/2/2017 0.06
6/3/2017 T
6/4/2017 0.01
6/5/2017 0.41
6/6/2017 1.37
6/7/2017 0.76
6/8/2017 T
6/9/2017 0.00
6/10/2017 0.01
6/11/2017 0.00
6/12/2017 0.00
6/13/2017 0.00
6/14/2017 0.01
6/15/2017 0.00
6/16/2017 0.00
6/17/2017 1.49
6/18/2017 T
6/19/2017 0.00
6/20/2017 0.31
6/21/2017 T
6/22/2017 0.00
6/23/2017 0.00
6/24/2017 0.02
6/25/2017 0.18
6/26/2017 0.02
6/27/2017 0.00
6/28/2017 0.60
6/29/2017 0.00
6/30/2017 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.23
7/2/2017 0.01
7/3/2017 0.00
7/4/2017 0.00
7/5/2017 0.00
7/6/2017 0.00
7/7/2017 T
7/8/2017 0.71
7/9/2017 0.59
7/10/2017 0.00
7/11/2017 0.24
7/12/2017 0.03
7/13/2017 0.48
7/14/2017 0.13
7/15/2017 T
7/16/2017 0.00
7/17/2017 0.00
7/18/2017 0.00
7/19/2017 0.29
7/20/2017 0.00
7/21/2017 0.00
7/22/2017 0.00
7/23/2017 0.00
7/24/2017 0.01
7/25/2017 **
7/26/2017 **
7/27/2017 **
7/28/2017 **
7/29/2017 1.36
7/30/2017 0.00
7/31/2017 0.00
8/1/2017 0.00
8/2/2017 0.00
8/3/2017 2.88
8/4/2017 0.00
8/5/2017 0.00
8/6/2017 0.36
8/7/2017 0.00
8/8/2017 T
8/9/2017 0.00
8/10/2017 0.00
8/11/2017 0.00
8/12/2017 **
8/13/2017 **
8/14/2017 0.15
8/15/2017 T
8/16/2017 0.00
8/17/2017 0.00
8/18/2017 0.00
8/19/2017 0.04
8/20/2017 0.00
8/21/2017 0.00
8/22/2017 0.00
8/23/2017 0.07
8/24/2017 0.00
8/25/2017 0.00
8/26/2017 0.00
8/27/2017 0.00
8/28/2017 0.00
8/29/2017 0.00
8/30/2017 0.09
8/31/2017 T
9/1/2017 0.00
9/2/2017 0.00
9/3/2017 0.07
9/4/2017 0.26
9/5/2017 0.00
9/6/2017 0.01
9/7/2017 1.24
9/8/2017 0.03
9/9/2017 0.00
9/10/2017 0.01
9/11/2017 0.00
9/12/2017 0.00
9/13/2017 0.00
9/14/2017 **
9/15/2017 **
9/16/2017 **
9/17/2017 0.05
9/18/2017 T
9/19/2017 0.01
9/20/2017 **
9/21/2017 0.42
9/22/2017 0.01
9/23/2017 0.16
9/24/2017 0.00
9/25/2017 0.00
9/26/2017 0.00
9/27/2017 0.00
9/28/2017 0.00
9/29/2017 0.00
9/30/2017 0.05



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 7:00 AM 0.85 M M M M Rain continued overnight and is picking up in intensity. First long duration rain event in months.
10/2/2016 7:00 AM 0.74 M M M M Steady rainfall yesterday in the morning tapered to drizzle for most of the day.
10/3/2016 7:00 AM 0.01 M M M M Overcast and misty yesterday
10/4/2016 7:00 AM 0.01 M M M M Very light rain overnight
10/5/2016 7:00 AM 0.01 M M M M Light rain yesterday just after 7am. Morning low of 43.5. Chilly.
10/6/2016 7:00 AM 0.00 0.0 M M M
10/7/2016 7:00 AM 0.00 0.0 M M M Morning low of 42.6
10/8/2016 7:00 AM 0.00 0.0 M M M Morning low of 42.6. Foggy start. Continued dry.
10/9/2016 7:00 AM 0.06 M M M M Remnants from Matthew streaming northward. Windy. Front moved thru at 6am.m
10/10/2016 7:00 AM 1.54 M M M M Persistent rain from TS Matthew yesterday fell until early evening. The last time we had more than 1" of rain was April 8, 2016 and the last time we had more precipitation was the January 11, 2016 snowstorm. The last rainstorm that was bigger was nearly a year ago on October 29, 2015.
10/11/2016 7:00 AM 0.00 0.0 M M M Overnight low of 35.1.
10/12/2016 7:00 AM 0.00 0.0 M M M
10/13/2016 7:00 AM 0.00 0.0 M M M Overnight low of 43.7
10/14/2016 7:00 AM T M M M M Overnight low of 41.
10/15/2016 7:00 AM 0.00 0.0 M M M
10/16/2016 7:00 AM 0.00 0.0 M M M
10/17/2016 7:00 AM 0.00 0.0 M M M Overnight low 55.4. Yesterday was mild.
10/18/2016 7:00 AM 0.12 M M M M Brief downpours overnight. 59F overnight low.
10/19/2016 7:00 AM 0.00 0.0 M M M Warm and muggy. Overnight low of 62.2
10/20/2016 7:00 AM 0.00 0.0 M M M Overnight low of 47
10/21/2016 7:00 AM 0.07 M M M M Foggy overnight with spotty showers
10/22/2016 7:00 AM 2.80 M M M M Most fell within a few hours with nearly 1.25 falling within 40 minutes. Most rain since 10/23/14.
10/23/2016 7:00 AM 0.12 M M M M Low pressure of 29.21 yesterday. Very windy
10/24/2016 7:00 AM 0.00 0.0 M M M
10/25/2016 7:00 AM 0.00 0.0 M M M
10/26/2016 7:00 AM 0.00 0.0 M M M First below freezing day of the season. Overnight low of 30.2.
10/27/2016 7:00 AM 0.00 0.0 M M M
10/28/2016 7:00 AM 1.04 M M M M
10/29/2016 7:00 AM 0.03 M M M M
10/30/2016 7:00 AM 0.01 M M M M
10/31/2016 7:00 AM 0.33 M M M M
11/1/2016 7:00 AM 0.00 0.0 M M M 31 degrees overnight.
11/2/2016 7:00 AM 0.00 0.0 M M M
11/3/2016 7:00 AM 0.02 M M M M Brief showers before dawn. Mild overnight.
11/4/2016 7:00 AM T M M M M
11/5/2016 7:00 AM 0.00 0.0 M M M
11/6/2016 7:00 AM 0.04 M M M M
11/7/2016 7:00 AM 0.01 M M M M Spotty brief showers
11/8/2016 7:00 AM 0.00 0.0 M M M
11/9/2016 7:00 AM 0.00 0.0 M M M
11/10/2016 7:00 AM T M M M M
11/11/2016 7:00 AM 0.00 0.0 M M M
11/12/2016 7:00 AM 0.00 0.0 M M M
11/13/2016 7:00 AM 0.00 0.0 M M M
11/14/2016 7:00 AM 0.00 0.0 M M M
11/15/2016 7:00 AM T M M M M
11/16/2016 7:00 AM 1.26 M M M M First significant rainfall this month.
11/17/2016 7:00 AM T M M M M
11/18/2016 7:00 AM 0.00 0.0 M M M
11/19/2016 7:00 AM 0.00 0.0 M M M
11/20/2016 7:00 AM 0.12 M M M M
11/21/2016 7:00 AM 0.01 M M M M First snow of the season.
11/22/2016 7:00 AM 0.00 0.0 M M M
11/23/2016 7:00 AM 0.00 0.0 M M M
11/24/2016 7:00 AM 0.00 0.0 M M M
11/27/2016 7:00 AM 0.00 0.0 M M M
11/28/2016 7:00 AM 0.00 0.0 M M M
11/29/2016 7:00 AM 0.01 M M M M Sent via CoCoRaHS Observer for iOS
11/30/2016 7:00 AM 0.50 M M M M Sent via CoCoRaHS Observer for iOS
12/1/2016 7:00 AM 0.88 M M M M Steady rain yesterday afternoon through early morning today.
12/2/2016 7:00 AM T M M M M
12/3/2016 7:00 AM 0.00 0.0 M M M
12/4/2016 7:00 AM 0.00 0.0 M M M
12/5/2016 7:00 AM 0.05 0.3 M 0.5 M Taken by weight.
12/6/2016 7:00 AM 0.12 M M M M Sent via CoCoRaHS Observer for iOS
12/7/2016 7:00 AM 0.12 M M M M Slush on the ground. Spotty snow. Generally gross.
12/8/2016 7:00 AM T M M M M
12/9/2016 7:00 AM 0.00 0.0 M M M
12/10/2016 7:00 AM 0.00 0.0 M M M
12/11/2016 7:00 AM 0.00 0.0 M M M Overnight low 10.8 -- coldest of the season.
12/12/2016 7:00 AM 0.34 1.5 M 1.5 M Snow started in overnight, changed to rain shortly before dawn. Slushy. Batteries on scale broke so melted with an inch of hot water and then subtracted that out.
12/13/2016 7:00 AM 0.21 M M M M Mixture of snow, sleet and rain fell through the late morning yesterday. Measurement melted and measured with the inner cylinder.
12/14/2016 7:00 AM 0.00 0.0 M M M No precip.
12/15/2016 7:00 AM 0.00 0.0 M M M No precip. Edges of Lake Winthrop in Holliston and Charles River in Sherborn are frozen.
12/16/2016 7:00 AM 0.00 0.0 M M M Bitterly cold last night. 3 degrees. No precip.
12/17/2016 7:00 AM 0.17 1.5 M 1.5 M Measurement taken by weight. Snowing since a few hours after midnight. Temp rising since midnight.
12/18/2016 7:00 AM 0.53 M M 2.5 M Snow ended yesterday around noon. Rain started up during the overnight. Some thunder and lightning before dawn. Slush in cylinder. Taken by weight.
12/19/2016 7:00 AM 0.02 M M M M Melted and measured.
12/20/2016 7:00 AM 0.00 0.0 M M M No precip.
12/21/2016 7:00 AM 0.00 0.0 M M M No precip. Low 20.8
12/22/2016 7:00 AM 0.00 0.0 M M M No precip. Still waiting to use that second outer cylinder I just got.
12/23/2016 7:00 AM 0.00 0.0 M M M No precip.
12/24/2016 7:00 AM 0.00 0.0 M M M No precip
12/25/2016 7:00 AM 0.43 M M M M Merry Christmas. Enjoying that second outer cylinder from Santa! It rained yesterday from morning through about 3 p.m.
12/26/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
12/27/2016 7:00 AM 0.02 M M M M
12/28/2016 7:00 AM 0.00 0.0 M M M No precip
12/29/2016 7:00 AM 0.00 0.0 M M M No precip but rain is coming
12/30/2016 7:00 AM 0.83 0.3 M M M Heavy rain yesterday with a quick changeover to mixed precipitation last night at the tail end of the storm. Measurement melted.
12/31/2016 7:00 AM 0.00 0.0 M M M Brief snow squall yesterday but nothing in the gauge this morning. At most, it was a trace.
1/1/2017 7:00 AM 0.00 0.0 M M M
1/2/2017 7:00 AM 0.00 0.0 M M M
1/3/2017 7:00 AM 0.05 M M M M Light rain overnight, more on the way. Ground is frozen so water is ponding on yards.
1/4/2017 7:00 AM 0.94 M M M M Steady rain most of yesterday. Ground is very soggy. All snow and ice is melted.
1/5/2017 7:00 AM 0.05 M M M M Brief showers last night shortly after sunset.
1/6/2017 7:00 AM 0.02 0.2 0.20 0.2 M Sample melted (benefit of second outer cylinder) and measured.
1/7/2017 7:00 AM 0.02 0.2 M 0.5 M Snow ended yesterday
1/8/2017 7:00 AM 0.64 9.0 M 9.0 M Outer cylinder melted and measured. Snow measurement taken late last night when snow stopped.
1/9/2017 7:00 AM 0.00 0.0 M M M No precip in gauge. Coldest night of the season. -1F at dawn.
1/10/2017 7:00 AM 0.00 0.0 M M M No precip. Rain on the way. 4 degrees last night.
1/11/2017 7:00 AM 0.26 M M M M Overnight rain ended around 5:30 AM. Warming temps brought lots of snow melt. Very slushy on the morning run.
1/12/2017 7:00 AM 0.18 M M M M Mild overnight and showers. Most of the snow is now melted.
1/13/2017 7:00 AM 0.03 M M M M Brief scattered showers yesterday. Warm this morning. Mid 40s. All snow gone.
1/14/2017 7:00 AM 0.00 0.0 M M M
1/15/2017 7:00 AM 0.00 0.0 M M M
1/16/2017 7:00 AM 0.00 0.0 M M M
1/17/2017 7:00 AM 0.00 0.0 M M M No precip.
1/18/2017 7:00 AM 0.50 M M M M Cold rain. Soggy ground with a bit of slushy sleet on spots.
1/19/2017 7:00 AM 0.07 M M M M Sprinkles throughout yesterday. Mid 30s
1/20/2017 7:00 AM T M M M M Just a whisp of moisture in the gauge.
1/21/2017 7:00 AM T M M M M Trace precip
1/22/2017 7:00 AM 0.00 0.0 M M M No precip but lots of rain on the way. Yesterday was very mild for January. Mid 50s. Got the basketballs out yesterday.
1/23/2017 7:00 AM 0.09 M M M M Overcast yesterday with showers overnight.
1/24/2017 7:00 AM 1.22 M M M M Wind and heavy rain/sleet overnight.
1/25/2017 7:00 AM 0.14 M M M M Drizzle most of yesterday. Mid 30s and windy.
1/26/2017 7:00 AM 0.01 M M M M Looks like it rained every so briefly overnight. Mild conditions continue. Lake Winthrop totally free of ice.
1/27/2017 7:00 AM 0.05 M M M M Brief showers yesterday and passing flurries early this morning.
1/28/2017 7:00 AM 0.00 0.0 M M M No precip
1/29/2017 7:00 AM 0.00 0.0 M M M
1/30/2017 7:00 AM 0.00 0.0 M M M
1/31/2017 7:00 AM 0.00 0.0 M M M Dry to end January though snow is on its way. Cold overnight. 16F.
2/1/2017 7:00 AM 0.14 2.0 M 2.0 M Measurement taken by melting snow caught in cylinder.
2/2/2017 7:00 AM 0.00 0.0 M M M No precip.
2/3/2017 7:00 AM 0.00 0.0 M M M A few flakes yesterday but no precip in cylinder.
2/4/2017 7:00 AM 0.00 0.0 M M M
2/5/2017 7:00 AM 0.00 0.0 M M M
2/6/2017 7:00 AM 0.00 0.0 M M M
2/7/2017 7:00 AM 0.00 0.0 M M M No precip in the gauge. Rain on its way.
2/8/2017 7:00 AM 0.49 0.5 M 0.5 M Sample melted and measured.
2/9/2017 7:00 AM 0.00 0.0 M M M No precip overnight. Lots of melting yesterday as highs reached into the mid 40s ahead of today's nor'easter.
2/10/2017 7:00 AM 1.32 11.0 M 11.5 M Very windy conditions yesterday so relatively little snow accumulated in the outer cylinder. Instead, I took a snow core sample off the snow board.
2/11/2017 7:00 AM 0.15 2.5 M 10.5 M Melted catch in outer cylinder.
2/12/2017 7:00 AM T M M 10.0 M
2/13/2017 7:00 AM 0.81 5.5 M M M Melted snow in outer cylinder and measured.
2/14/2017 7:00 AM 0.00 0.0 M M M No precip yesterday.
2/15/2017 7:00 AM 0.00 0.0 M M M No precip yesterday.
2/16/2017 7:00 AM 0.14 0.5 M M M Sent via CoCoRaHS Observer for iOS
2/17/2017 7:00 AM 0.00 0.0 M M M No precip yesterday.
2/18/2017 7:00 AM 0.00 0.0 M M M
2/19/2017 7:00 AM 0.00 0.0 M M M
2/20/2017 7:00 AM 0.00 0.0 M M M
2/21/2017 7:00 AM 0.00 0.0 M M M Continued dry weather though there remains several inches of snow on the ground. Lake Winthrop still frozen over.
2/22/2017 7:00 AM 0.00 0.0 M M M Continued dry weather. Warmer weather is melting the snowpack. Areas under tree cover are mostly free of snow.
2/23/2017 7:00 AM 0.00 0.0 M M M No precip
2/24/2017 7:00 AM 0.00 0.0 M M M
2/25/2017 7:00 AM 0.00 0.0 M M M
2/26/2017 7:00 AM 0.09 M M M M very mild yesterday, mid 60s. Brief showers.
2/27/2017 7:00 AM 0.00 0.0 M 0.0 0.00 No precip yesterday. Lows in the high 20s this morning. Lake Winthrop completely free of ice.
2/28/2017 7:00 AM T M M M M Light drizzle. A few drops in cylinder.
3/1/2017 7:00 AM 0.02 M M M M Nearly 50 at the time of reading. Very warm for March 1.
3/2/2017 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
3/3/2017 7:00 AM 0.00 0.0 M M M No precip. Cold weather returned.
3/4/2017 7:00 AM 0.00 0.0 M M M
3/5/2017 7:00 AM 0.00 0.0 M M M
3/6/2017 7:00 AM 0.00 0.0 M M M
3/7/2017 7:00 AM T M M M M
3/8/2017 7:00 AM 0.04 M M M M Low 50s this morning
3/9/2017 7:00 AM 0.02 M M M M Slight showers in the morning.
3/10/2017 7:00 AM 0.03 0.0 M 0.0 M Light snow started just before dawn. Barely a coating.
3/11/2017 7:00 AM 0.16 2.5 M 1.5 M Melted snow measured from outer cylinder.
3/12/2017 7:00 AM 0.00 0.0 M 1.0 M
3/13/2017 7:00 AM 0.00 0.0 M 0.5 M
3/14/2017 7:00 AM 0.06 1.0 M 1.0 M Snow began before dawn. Rough run.
3/15/2017 7:00 AM 1.16 10.0 2.06 10.0 M 1.16 inches fell in the gauge but 2.06 was in the core taken off the snow board using the outer cylinder.
3/16/2017 7:00 AM 0.00 0.0 M M M Margins of Lake Winthrop are frozen.
3/17/2017 7:00 AM 0.00 0.0 M M M No precip. Continued cold.
3/18/2017 7:00 AM 0.00 0.0 M M M
3/19/2017 7:00 AM 0.01 M M M M Brief flurries before dawn
3/20/2017 7:00 AM 0.00 0.0 M M M No precip yesterday
3/21/2017 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
3/22/2017 7:00 AM 0.00 0.0 M M M
3/23/2017 7:00 AM 0.00 0.0 M M M
3/24/2017 7:00 AM 0.00 0.0 M M M
3/25/2017 7:00 AM 0.01 M M M M
3/26/2017 7:00 AM 0.03 M M M M Sent via CoCoRaHS Observer for iOS
3/27/2017 7:00 AM 0.01 M M M M Light drizzle overnight.
3/28/2017 7:00 AM 0.48 M M M M
3/29/2017 7:00 AM 0.67 M M M M
3/30/2017 7:00 AM 0.00 0.0 M M M
3/31/2017 7:00 AM 0.00 0.0 M M M
4/1/2017 7:00 AM 1.81 M M M M patchy slush on ground
4/2/2017 7:00 AM 0.50 M M M M Wet snow and rain yesterday. No accumulation.
4/3/2017 7:00 AM 0.00 0.0 M 0.0 0.00
4/4/2017 7:00 AM 0.23 M M M M Sent via CoCoRaHS Observer for iOS
4/5/2017 7:00 AM 0.56 M M M M Steady rain yesterday. Well absorbed by the yard.
4/6/2017 7:00 AM T M M M M
4/7/2017 7:00 AM 0.92 M M M M
4/8/2017 7:00 AM 0.01 M M M M
4/9/2017 7:00 AM 0.00 0.0 M M M
4/10/2017 7:00 AM 0.00 0.0 M M M
4/11/2017 7:00 AM 0.00 0.0 M M M Unusually mild.
4/12/2017 7:00 AM 0.00 0.0 M M M
4/13/2017 7:00 AM 0.05 M M M M Brief showers yesterday afternoon.
4/14/2017 7:00 AM 0.00 0.0 M M M
4/15/2017 7:00 AM 0.00 0.0 M M M
4/16/2017 7:00 AM 0.02 M M M M Brief showers late last night. A gorgeous summery Easter day.
4/17/2017 7:00 AM 0.01 M M M M Brief showers yesterday
4/18/2017 7:00 AM 0.00 0.0 M M M A warm Patriot's Day yesterday.
4/19/2017 7:00 AM 0.00 0.0 M M M
4/20/2017 7:00 AM 0.07 M M M M Spotty showers last evening and overnight.
4/21/2017 7:00 AM 0.26 M M M M Sent via CoCoRaHS Observer for iOS
4/22/2017 7:00 AM 0.33 M M M M Sent via CoCoRaHS Observer for iOS
4/23/2017 7:00 AM 0.09 M M M M Sent via CoCoRaHS Observer for iOS
4/24/2017 7:00 AM 0.00 0.0 M M M
4/25/2017 7:00 AM 0.01 M M M M
4/26/2017 7:00 AM 0.93 M M M M Steady rain yesterday.
4/27/2017 7:00 AM 0.24 M M M M Sent via CoCoRaHS Observer for iOS
4/28/2017 7:00 AM 0.01 M M M M Rain gauge had some grass blocking the catch, so the numbers could be off a bit.
4/29/2017 7:00 AM 0.00 0.0 M M M
4/30/2017 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
5/1/2017 7:00 AM 0.05 M M M M Sent via CoCoRaHS Observer for iOS
5/2/2017 7:00 AM 0.12 M M M M Sent via CoCoRaHS Observer for iOS
5/3/2017 7:00 AM 0.02 M M M M
5/4/2017 7:00 AM 0.00 0.0 M M M No precip yesterday but windy.
5/5/2017 7:00 AM T M M M M Rain just starting.
5/6/2017 7:00 AM 1.04 M M M M Heavy rain and cool
5/7/2017 7:00 AM 0.12 M M M M Sent via CoCoRaHS Observer for iOS
5/8/2017 7:00 AM 0.02 M M M M Brief early evening showers.
5/9/2017 7:00 AM 0.00 0.0 M M M No precip yesterday. Continued cool in the 50s.
5/10/2017 7:00 AM 0.00 0.0 M M M No precip yesterday; continued cool.
5/11/2017 7:00 AM 0.00 0.0 M M M No precip yesterday. Continued cool. 50s > low 60s
5/12/2017 7:00 AM T M M M M sprinkles at time of monitoring
5/13/2017 7:00 AM 0.01 M M M M
5/14/2017 7:00 AM 0.97 M M M M Heavy rain overnight.
5/15/2017 7:00 AM 0.48 M M M M Rain nearly all of yesterday and continuing at time of observation
5/16/2017 7:00 AM 0.15 M M M M Final round of showers yesterday after a late season Nor'easter.
5/17/2017 7:00 AM T M M M M Must have rained every so slightly overnight as there was just a hair shy of .01 of precip, so we'll call it a trace
5/18/2017 7:00 AM 0.00 0.0 M M M No precip. High of 88 yesterday.
5/19/2017 7:00 AM 0.12 M M M M Strong thunderstorms after midnight.
5/20/2017 7:00 AM 0.00 0.0 M M M
5/21/2017 7:00 AM 0.00 0.0 M M M
5/22/2017 7:00 AM 0.05 M M M M Showers moved in during the overnight hours.
5/23/2017 7:00 AM 0.09 M M M M Drizzle on and off.
5/24/2017 7:00 AM 0.01 M M M M Just barely a hundredth yesterday.
5/25/2017 7:00 AM T M M M M Very brief showers yesterday morning. More rain on its way.
5/26/2017 7:00 AM 1.20 M M M M Heavy rain over night, about .90 inches fell between 10 and the time of measurement at 7 this morning.
5/27/2017 7:00 AM 0.21 M M M M
5/28/2017 7:00 AM 0.00 0.0 M M M
5/29/2017 7:00 AM 0.00 0.0 M M M
6/2/2017 7:00 AM 0.06 M M M M After showers yesterday.
6/3/2017 7:00 AM T M M M M
6/4/2017 7:00 AM 0.01 M M M M Very brief showers yesterday
6/5/2017 7:00 AM 0.41 M M M M Rain early evening and early morning.
6/6/2017 7:00 AM 1.37 M M M M Heavy rain overnight -- nearly 1.3 inches. Cool, windy and a bit raw.
6/7/2017 7:00 AM 0.76 M M M M Steady rain showers yesterday. Clearing this morning.
6/8/2017 7:00 AM T M M M M Just a trace yesterday.
6/9/2017 7:00 AM 0.00 0.0 M M M
6/10/2017 7:00 AM 0.01 M M M M Brief sprinkles from edge of thunderstorms.
6/11/2017 7:00 AM 0.00 0.0 M M M No precip.
6/12/2017 7:00 AM 0.00 0.0 M M M No precip
6/13/2017 7:00 AM 0.00 0.0 M M M no precip
6/14/2017 7:00 AM 0.01 M M M M brief showers overnight
6/15/2017 7:00 AM 0.00 0.0 M M M No precip.
6/16/2017 7:00 AM 0.00 0.0 M M M No precip
6/17/2017 7:00 AM 1.49 M M M M Heavy rain yesterday afternoon and evening.
6/18/2017 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
6/19/2017 7:00 AM 0.00 0.0 M M M Very humid yesterday.
6/20/2017 7:00 AM 0.31 M M M M Heavy showers last night and again this morning.
6/21/2017 7:00 AM T M M M M Just a trace yesterday morning
6/22/2017 7:00 AM 0.00 0.0 M M M No precip yesterday.
6/23/2017 7:00 AM 0.00 0.0 M M M No precip yesterday.
6/24/2017 7:00 AM 0.02 M M M M Brief showers yesterday afternoon and early this morning.
6/25/2017 7:00 AM 0.18 M M M M
6/26/2017 7:00 AM 0.02 M M M M Caught the southern fringe of a strong thunderstorm to the north.
6/27/2017 7:00 AM 0.00 0.0 M M M No precip yesterday
6/28/2017 7:00 AM 0.60 M M M M Two rounds of thunderstorms late afternoon and early evening yesterday.
6/29/2017 7:00 AM 0.00 0.0 M M M
6/30/2017 7:00 AM 0.00 0.0 M M M No precip that day.
7/1/2017 7:00 AM 0.23 M M M M Early evening thunderstorms
7/2/2017 7:00 AM 0.01 M M M M
7/3/2017 7:00 AM 0.00 0.0 M M M
7/4/2017 7:00 AM 0.00 0.0 M M M
7/5/2017 7:00 AM 0.00 0.0 M M M No precip
7/6/2017 7:00 AM 0.00 0.0 M M M No precip
7/7/2017 7:00 AM T M M M M slight precip in the early morning hours
7/8/2017 7:00 AM 0.71 M M M M Steady rain yesterday.
7/9/2017 7:00 AM 0.59 M M M M Sent via CoCoRaHS Observer for iOS
7/10/2017 7:00 AM 0.00 0.0 M M M
7/11/2017 7:00 AM 0.24 M M M M Early morning showers
7/12/2017 7:00 AM 0.03 M M M M Brief showers yesterday.
7/13/2017 7:00 AM 0.48 M M M M Severe thunderstorms that dropped hail scooted to our south.
7/14/2017 7:00 AM 0.13 M M M M
7/15/2017 7:00 AM T M M M M
7/16/2017 7:00 AM 0.00 0.0 M M M
7/17/2017 7:00 AM 0.00 0.0 M M M No precip
7/18/2017 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
7/19/2017 7:00 AM 0.29 M M M M Brief but very heavy downpour yesterday.
7/20/2017 7:00 AM 0.00 0.0 M M M No precip
7/21/2017 7:00 AM 0.00 0.0 M M M No precip yesterday though thunderstorms were in the area.
7/22/2017 7:00 AM 0.00 0.0 M M M
7/23/2017 7:00 AM 0.00 0.0 M M M
7/24/2017 7:00 AM 0.01 M M M M Brief showers this morning.
7/30/2017 7:00 AM 0.00 0.0 M M M
7/31/2017 7:00 AM 0.00 0.0 M M M
8/1/2017 7:00 AM 0.00 0.0 M M M No precip yesterday
8/2/2017 7:00 AM 0.00 0.0 M M M No precip.
8/3/2017 7:00 AM 2.88 M M M M Very heavy rain yesterday afternoon as thunderstorms trained over Holliston. Most of the rain fell between 5 and 8 pm. This is the most rain reported in one day for this station.
8/4/2017 7:00 AM 0.00 0.0 M M M No precip
8/5/2017 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/6/2017 7:00 AM 0.36 M M M M Sent via CoCoRaHS Observer for iOS
8/7/2017 7:00 AM 0.00 0.0 M M M No precip
8/8/2017 7:00 AM T M M M M Just a trace. A bit of a bust from the 1 to 2 inches forecast yesterday.
8/9/2017 7:00 AM 0.00 M M M M No precip
8/10/2017 7:00 AM 0.00 0.0 M M M
8/11/2017 7:00 AM 0.00 0.0 M M M
8/15/2017 7:00 AM T M M M M
8/16/2017 7:00 AM 0.00 0.0 M M M
8/17/2017 7:00 AM 0.00 0.0 M M M
8/18/2017 7:00 AM 0.00 0.0 M M M No precip but it looks to be on the way.
8/19/2017 7:00 AM 0.04 M M M M
8/20/2017 7:00 AM 0.00 0.0 M M M It's beginning to get dry out there. Haven't had much rain in two weeks.
8/21/2017 7:00 AM 0.00 0.0 M M M Continued dry.
8/22/2017 7:00 AM 0.00 0.0 M M M Continued dry conditions. Eclipse yesterday.
8/23/2017 7:00 AM 0.07 M M M M Brief showers from a dying squall line overnight.
8/24/2017 7:00 AM 0.00 M M M M No precip
8/25/2017 7:00 AM 0.00 0.0 M M M No precip. Continued dry weather.
8/26/2017 7:00 AM 0.00 0.0 M M M
8/27/2017 7:00 AM 0.00 0.0 M M M
8/28/2017 7:00 AM 0.00 0.0 M M M
8/29/2017 7:00 AM 0.00 M M M M
8/30/2017 7:00 AM 0.09 M M M M Showers overnight
8/31/2017 7:00 AM T M M M M
9/1/2017 7:00 AM 0.00 0.0 M M M
9/2/2017 7:00 AM 0.00 M M M M
9/3/2017 7:00 AM 0.07 M M M M Light rain overnight.
9/4/2017 7:00 AM 0.26 M M M M The most rainfall we've had in a month. Very cool yesterday.
9/5/2017 7:00 AM 0.00 0.0 M M M No precip yesterday.
9/6/2017 7:00 AM 0.01 M M M M
9/7/2017 7:00 AM 1.24 M M M M Very heavy rain overnight. Close to an inch fell. Earlier in the day, late morning thunderstorms delivered more noise than rain.
9/8/2017 7:00 AM 0.03 M M M M Very brief downpour last night before the Pats became unhinged.
9/9/2017 7:00 AM 0.00 0.0 M M M Dew on the gauge.
9/10/2017 7:00 AM 0.01 M M M M Just a few very very brief showers yesterday afternoon. Natick and points north seemed to get more rain.
9/11/2017 7:00 AM 0.00 0.0 M M M A low of 48 degrees. Cold enough to see my breath for pre sunrise run.
9/12/2017 7:00 AM 0.00 M M M M
9/13/2017 7:00 AM 0.00 M M M M
9/18/2017 7:00 AM T M M M M very light sprinkles at dawn.
9/19/2017 7:00 AM 0.01 M M M M
9/22/2017 7:00 AM 0.01 M M M M
9/23/2017 7:00 AM 0.16 M M M M
9/24/2017 7:00 AM 0.00 0.0 M M M Mild yesterday.
9/25/2017 7:00 AM 0.00 0.0 M M M Very mild for late September. Low 80s yesterday.
9/26/2017 7:00 AM 0.00 0.0 M M M No precip and very warm yesterday. Dense fog this morning.
9/27/2017 7:00 AM 0.00 M M M M Continues warmth yesterday
9/28/2017 7:00 AM 0.00 M M M M Nearly 70 at dawn with near 100% humidity. Otherwise dry.
9/29/2017 7:00 AM 0.00 0.0 M M M Cool last night - low 40s - no precip
9/30/2017 7:00 AM 0.05 M M M M Nice to have a bit of rain to end the water year. See you next year.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/25/2016 11/26/2016 7:00 AM 2 0.15 M M
5/30/2017 6/01/2017 7:00 AM 3 0.19 M M
7/25/2017 7/29/2017 7:00 AM 5 1.36 M M
8/12/2017 8/14/2017 7:00 AM 3 0.15 M M
9/14/2017 9/17/2017 7:00 AM 4 0.05 M M
9/20/2017 9/21/2017 7:00 AM 2 0.42 M M Hurricane Jose



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground