Station Overview Station Location
Station Number MA-WR-31 Latitude 42.200325
Station Name Grafton 1.3 W Longitude -71.70889899
County Worcester Elevation (ft) 361



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 4.53 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 16 4.22 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 16 4.25 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 17 3.71 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 17 3.43 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 17 4.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 17 4.36 1.71 11 1.71 10 0.00 1 0 8 0 0.0 0 0
May 17 3.71 5.81 29 5.73 28 0.08 1 1 13 2 0.0 0 0
June 17 4.10 3.94 20 3.94 20 0.00 0 0 11 1 0.0 0 0
July 17 3.88 4.41 21 4.41 17 0.00 4 1 13 0 0.0 0 0
Aug 17 3.65 1.54 20 1.54 20 0.00 0 0 8 0 0.0 0 0
Sept 17 3.71 2.37 19 2.37 19 0.00 0 0 8 2 0.0 0 0
Water Year Totals: 48.05" 19.78" 120 days 19.70" 114 0.08" 6 days 2 61 days 5 days 0.0" 0 days 0 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
10/2/2016
10/3/2016
10/4/2016
10/5/2016
10/6/2016
10/7/2016
10/8/2016
10/9/2016
10/10/2016
10/11/2016
10/12/2016
10/13/2016
10/14/2016
10/15/2016
10/16/2016
10/17/2016
10/18/2016
10/19/2016
10/20/2016
10/21/2016
10/22/2016
10/23/2016
10/24/2016
10/25/2016
10/26/2016
10/27/2016
10/28/2016
10/29/2016
10/30/2016
10/31/2016
11/1/2016
11/2/2016
11/3/2016
11/4/2016
11/5/2016
11/6/2016
11/7/2016
11/8/2016
11/9/2016
11/10/2016
11/11/2016
11/12/2016
11/13/2016
11/14/2016
11/15/2016
11/16/2016
11/17/2016
11/18/2016
11/19/2016
11/20/2016
11/21/2016
11/22/2016
11/23/2016
11/24/2016
11/25/2016
11/26/2016
11/27/2016
11/28/2016
11/29/2016
11/30/2016
12/1/2016
12/2/2016
12/3/2016
12/4/2016
12/5/2016
12/6/2016
12/7/2016
12/8/2016
12/9/2016
12/10/2016
12/11/2016
12/12/2016
12/13/2016
12/14/2016
12/15/2016
12/16/2016
12/17/2016
12/18/2016
12/19/2016
12/20/2016
12/21/2016
12/22/2016
12/23/2016
12/24/2016
12/25/2016
12/26/2016
12/27/2016
12/28/2016
12/29/2016
12/30/2016
12/31/2016
Day of YearDaily PrcpMultiday Prcp
1/1/2017
1/2/2017
1/3/2017
1/4/2017
1/5/2017
1/6/2017
1/7/2017
1/8/2017
1/9/2017
1/10/2017
1/11/2017
1/12/2017
1/13/2017
1/14/2017
1/15/2017
1/16/2017
1/17/2017
1/18/2017
1/19/2017
1/20/2017
1/21/2017
1/22/2017
1/23/2017
1/24/2017
1/25/2017
1/26/2017
1/27/2017
1/28/2017
1/29/2017
1/30/2017
1/31/2017
2/1/2017
2/2/2017
2/3/2017
2/4/2017
2/5/2017
2/6/2017
2/7/2017
2/8/2017
2/9/2017
2/10/2017
2/11/2017
2/12/2017
2/13/2017
2/14/2017
2/15/2017
2/16/2017
2/17/2017
2/18/2017
2/19/2017
2/20/2017
2/21/2017
2/22/2017
2/23/2017
2/24/2017
2/25/2017
2/26/2017
2/27/2017
2/28/2017
3/1/2017
3/2/2017
3/3/2017
3/4/2017
3/5/2017
3/6/2017
3/7/2017
3/8/2017
3/9/2017
3/10/2017
3/11/2017
3/12/2017
3/13/2017
3/14/2017
3/15/2017
3/16/2017
3/17/2017
3/18/2017
3/19/2017
3/20/2017
3/21/2017
3/22/2017
3/23/2017
3/24/2017
3/25/2017
3/26/2017
3/27/2017
3/28/2017
3/29/2017
3/30/2017
3/31/2017
Day of YearDaily PrcpMultiday Prcp
4/1/2017
4/2/2017
4/3/2017
4/4/2017
4/5/2017
4/6/2017
4/7/2017
4/8/2017
4/9/2017
4/10/2017
4/11/2017
4/12/2017
4/13/2017
4/14/2017
4/15/2017
4/16/2017
4/17/2017 0.01
4/18/2017
4/19/2017
4/20/2017 0.05
4/21/2017 0.38
4/22/2017 0.23
4/23/2017 0.03
4/24/2017
4/25/2017 0.00
4/26/2017 0.77
4/27/2017 0.22
4/28/2017 0.02
4/29/2017 0.00
4/30/2017 **
5/1/2017 0.08
5/2/2017 0.30
5/3/2017
5/4/2017
5/5/2017 T
5/6/2017 1.14
5/7/2017 0.06
5/8/2017 0.00
5/9/2017 0.00
5/10/2017 0.01
5/11/2017 0.00
5/12/2017 0.00
5/13/2017 0.00
5/14/2017 1.29
5/15/2017 0.43
5/16/2017 0.25
5/17/2017 0.00
5/18/2017 0.00
5/19/2017 0.09
5/20/2017 0.00
5/21/2017 0.00
5/22/2017 0.05
5/23/2017 0.10
5/24/2017 0.00
5/25/2017 0.00
5/26/2017 1.53
5/27/2017 0.37
5/28/2017 0.00
5/29/2017 0.00
5/30/2017 0.11
5/31/2017 T
6/1/2017 0.28
6/2/2017 0.07
6/3/2017 0.00
6/4/2017 0.00
6/5/2017 0.15
6/6/2017 1.05
6/7/2017 0.63
6/8/2017
6/9/2017 T
6/10/2017 0.05
6/11/2017 0.00
6/12/2017
6/13/2017 0.00
6/14/2017
6/15/2017
6/16/2017 0.00
6/17/2017 0.70
6/18/2017 0.00
6/19/2017
6/20/2017 0.46
6/21/2017
6/22/2017
6/23/2017
6/24/2017 0.00
6/25/2017 0.22
6/26/2017 0.15
6/27/2017 0.00
6/28/2017 0.18
6/29/2017
6/30/2017
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.18
7/2/2017
7/3/2017 0.08
7/4/2017 0.00
7/5/2017
7/6/2017
7/7/2017 0.00
7/8/2017 0.97
7/9/2017 0.62
7/10/2017
7/11/2017 0.17
7/12/2017
7/13/2017 0.83
7/14/2017 0.17
7/15/2017 0.02
7/16/2017 0.00
7/17/2017
7/18/2017
7/19/2017 0.28
7/20/2017 **
7/21/2017 **
7/22/2017 **
7/23/2017 0.00
7/24/2017 0.01
7/25/2017 0.97
7/26/2017 0.02
7/27/2017
7/28/2017 0.09
7/29/2017
7/30/2017
7/31/2017 0.00
8/1/2017 0.00
8/2/2017 0.00
8/3/2017 0.65
8/4/2017
8/5/2017 0.02
8/6/2017 0.50
8/7/2017 0.00
8/8/2017 0.03
8/9/2017 0.00
8/10/2017 0.00
8/11/2017
8/12/2017 0.15
8/13/2017 0.00
8/14/2017
8/15/2017 0.00
8/16/2017 0.00
8/17/2017
8/18/2017 0.00
8/19/2017 0.05
8/20/2017 0.00
8/21/2017
8/22/2017
8/23/2017 0.08
8/24/2017
8/25/2017 0.00
8/26/2017
8/27/2017
8/28/2017 0.00
8/29/2017
8/30/2017 0.06
8/31/2017
9/1/2017
9/2/2017
9/3/2017 0.06
9/4/2017 0.74
9/5/2017
9/6/2017 0.00
9/7/2017 1.20
9/8/2017 0.02
9/9/2017 0.00
9/10/2017
9/11/2017 0.00
9/12/2017 0.00
9/13/2017
9/14/2017
9/15/2017 0.03
9/16/2017 T
9/17/2017 0.00
9/18/2017 0.00
9/19/2017
9/20/2017 0.03
9/21/2017 0.19
9/22/2017 0.00
9/23/2017 0.10
9/24/2017 0.00
9/25/2017 0.00
9/26/2017
9/27/2017
9/28/2017
9/29/2017
9/30/2017 T



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
4/17/2017 7:40 AM 0.01 M M M M Sorry, I'm a little late, just back from Florida, and not into the routine. 62 deg, 84% hum, 57 DP, 4 mph SSW breeze, clear, sunny w/ a few thin clouds. Had a quick shower overnight.
4/20/2017 7:11 AM 0.05 M M M M 47 degrees; 99% humidity; 46 Dew Point; overcast & calm. Had a shower pass through early evening Wed (6 PM)
4/21/2017 7:30 AM 0.38 M M M M 45 degrees; 97% humidity; 44 dewpoint; light rain
4/22/2017 7:25 AM 0.23 M M M M 43 degrees; 98% humidity; 42 dewpoint; overcast
4/23/2017 7:20 AM 0.03 M M M M 43 degrees; 85% humidity; 39 dew point; clear & sunny
4/25/2017 6:25 AM 0.00 0.0 M M M 50 degrees; 90% humidity; 48 dew point. Light rain had just started
4/26/2017 6:45 AM 0.77 M M M M 47 degrees; 99% humidity; 47 dew point; light drizzle
4/27/2017 6:45 AM 0.22 M M M M 54 degrees, 97% humidity, 53 dew point, overcast and calm
4/28/2017 6:55 AM 0.02 M M M M 58 degrees, 99% humidity, 58 dew point; overcast smoe fog
4/29/2017 7:33 AM 0.00 0.0 M M M 62 degrees, 89% humidity, 59 dew point, overcast & calm
5/2/2017 6:50 AM 0.30 M M M M 46 degrees, 97% humidity, 45 dew point, overcast & calm
5/5/2017 6:53 AM T M M M M 46 degrees, 89% humidity, 43 dew point, light rain started at approx. 5:30 AM
5/6/2017 8:00 AM 1.14 M M M M 60 degrees, 98% humidity, 59 dew point, overcast and calm
5/7/2017 6:47 AM 0.06 M M M M 53 degrees, 80% humidity, 47 dew point, overcast, light breeze
5/8/2017 6:45 AM 0.00 0.0 M M M 43 degrees, 83% humidity, 38 dew point, partly cloudy w/sun
5/9/2017 7:10 AM 0.00 0.0 M M M 35 degrees, 97% humidity, 34 dew point, partly cloudy & calm
5/10/2017 7:10 AM 0.01 M M M M 45 degrees, 76% humidity, 38 dew point, mostly cloudy (breaking up), calm
5/11/2017 7:02 AM 0.00 0.0 M M M 47 degrees, 75% humidity, 40 dew point, clear, sunny, calm
5/12/2017 7:35 AM 0.00 0.0 M M M 48 degrees, 99 humidity, 48 dew point, overcast w/ a light drizzle.
5/13/2017 6:50 AM 0.00 0.0 M M M 42 degrees, 98% humidity, 42 dew point, overcast and calm
5/14/2017 6:48 AM 1.29 M M M M 42 degrees, 99% humidity, 42 dew point, light rain. Rain started Sat 5:00 PM (very light). The following totals are cumulative: 7:00 PM 0.02"; 10:00 PM 0.11"; Sun 2:30 AM 0.74"; 5:30 AM 1.20"; 6:48 AM 1.29" Started as very light I only observed very light to light, could hear heavier during the night.
5/15/2017 7:10 AM 0.43 0.0 M M M 0.43", 47 degrees, 99% humidity, 47 dew point, light drizzle. The following ar rainfall from Sunday, they are cumulative: Sun 9:30 AM 0.05" light rain; Sun 3:30 PM 0.18" drizzle; Sun 8:35 PM 0.25" no rain; Mon 5:30 AM 0.40"; Mon 7:10 AM 0.43"
5/16/2017 6:35 AM 0.25 M M M M 51 degrees, 88% humidity, 48 dew point, clear, sunny and calm
5/17/2017 7:04 AM 0.00 0.0 M M M 58 degrees, 85% humidity, 53 dew point, mostly sunny
5/18/2017 6:50 AM 0.00 0.0 M M M 63 degrees, 99% humidity, 63 dew point, mostly sunny, calm
5/19/2017 8:45 AM 0.09 M M M M Sorry for being so late!
5/20/2017 7:00 AM 0.00 0.0 M M M 53 degrees, 79% humidity, 47 dew point, overcast and calm
5/21/2017 7:10 AM 0.00 0.0 M M M 45 degrees, 99% humidity, 45 dew point, sunny and calm
5/22/2017 6:45 AM 0.05 M M M M 49 degrees, 99% humidity, 49 dew point medium rain (started before 5:45 AM)
5/23/2017 6:50 AM 0.10 M M M M 52 degrees, 98% humidity, 52 dew point Partly cloudy (high and thin), calm
5/24/2017 7:40 AM 0.00 0.0 M M M 55 degrees, 99% humidity, 55 dew point, overcast and calm
5/25/2017 7:00 AM 0.00 0.0 M M M 53 degrees, 98% humidity, 52 dew point, overcast & calm
5/26/2017 6:58 AM 1.53 M M M M
5/27/2017 6:48 AM 0.37 M M M M 53 degrees, 98% humidity, 52 dew point, clear, sunny and calm
5/28/2017 7:15 AM 0.00 0.0 M M M 57 degrees, 97% humidity, 56 dew point, mostly cloudy and calm
5/29/2017 7:25 AM 0.00 0.0 M M M 53 degrees, 98% humidity, 52 dew point, cloudy/overcast, calm
5/30/2017 6:40 AM 0.11 M M M M 50 degrees, 99% humidity, 50 dew point, overcast, calm
5/31/2017 6:50 AM T M M M M Had a quick shower overnight 54 degrees, 97% humidity, 54 dew point, overcast & calm
6/1/2017 6:50 AM 0.28 M M M M 56 degrees, 99% humidity, 56 dew point, mostly sunny. 5.42 inches for May
6/2/2017 6:55 AM 0.07 M M M M Rain thursday afternoon, between 3:00-3:45 PM 50 degrees, 91% humidity, 48 dew point, high thin clouds.
6/3/2017 6:45 AM 0.00 0.0 M M M 45 degrees, 99% humidity, 45 dew point, partly cloudy
6/4/2017 7:05 AM 0.00 0.0 M M M 51 degrees, 98% humidity, 51 dew point, mostly sunny
6/5/2017 7:00 AM 0.15 M M M M 55 degrees, 99% humidity, 55 dew point, overcast, not raining
6/6/2017 7:15 AM 1.05 M M M M 50 degrees, 99% humidity, 49 dew point, light rain
6/7/2017 6:55 AM 0.63 M M M M Light to medium rain for the 24 hour period.
6/9/2017 6:40 AM T M M M M 52 degrees, 95% humidity, 50 dew point. clear and sunny with a few thin clouds.
6/10/2017 7:00 AM 0.05 M M M M
6/11/2017 7:10 AM 0.00 0.0 M M M
6/13/2017 7:03 AM 0.00 0.0 M M M
6/16/2017 6:45 AM 0.00 0.0 M M M Sorry for not recording amounts for the last couple of days, my computer has been in the shop.
6/17/2017 7:50 AM 0.70 M M M M
6/18/2017 7:20 AM 0.00 0.0 M M M
6/20/2017 6:47 AM 0.46 M M M M
6/24/2017 7:00 AM 0.00 0.0 M M M
6/25/2017 7:15 AM 0.22 M M M M
6/26/2017 6:45 AM 0.15 M M M M rain after 9:00 PM, plus a quick shower at 3:00 PM t0 3:45
6/27/2017 7:00 AM 0.00 0.0 M M M Radar shows showers coming
6/28/2017 6:55 AM 0.18 M M M M
7/1/2017 7:05 AM 0.18 M M M M
7/3/2017 6:55 AM 0.08 M M M M
7/4/2017 7:05 AM 0.00 0.0 M M M
7/7/2017 7:20 AM 0.00 0.0 M M M
7/8/2017 6:45 AM 0.97 M M M M
7/9/2017 7:30 AM 0.62 M M M M
7/11/2017 6:50 AM 0.17 M M M M
7/13/2017 7:30 AM 0.83 M M M M
7/14/2017 6:45 AM 0.17 M M M M It was drizzle/light rain all day from 7:00 AM til 9:00 PM
7/15/2017 7:15 AM 0.02 M M M M
7/16/2017 7:25 AM 0.00 0.0 M M M
7/19/2017 7:20 AM 0.28 M M M M Sent via CoCoRaHS Observer for iOS
7/24/2017 7:10 AM 0.01 M M M M
7/25/2017 7:05 AM 0.97 M M M M
7/26/2017 7:15 AM 0.02 M M M M
7/28/2017 6:45 AM 0.09 M M M M
7/31/2017 7:05 AM 0.00 0.0 M M M had a total of 4.41 inches through to 7:05 AM taday
8/1/2017 7:35 AM 0.00 0.0 M M M
8/2/2017 6:55 AM 0.00 0.0 M M M
8/3/2017 6:45 AM 0.65 M M M M
8/5/2017 7:00 AM 0.02 M M M M
8/6/2017 7:45 AM 0.50 M M M M
8/7/2017 7:00 AM 0.00 0.0 M M M
8/8/2017 6:50 AM 0.03 M M M M
8/9/2017 6:58 AM 0.00 0.0 M M M
8/10/2017 7:00 AM 0.00 0.0 M M M
8/12/2017 7:05 AM 0.15 M M M M
8/13/2017 7:15 AM 0.00 0.0 M M M
8/15/2017 7:50 AM 0.00 0.0 M M M
8/16/2017 7:00 AM 0.00 0.0 M M M
8/18/2017 7:00 AM 0.00 0.0 M M M
8/19/2017 7:15 AM 0.05 M M M M
8/20/2017 7:20 AM 0.00 0.0 M M M
8/23/2017 6:50 AM 0.08 M M M M
8/25/2017 7:06 AM 0.00 0.0 M M M
8/28/2017 7:00 AM 0.00 0.0 M M M
8/30/2017 7:00 AM 0.06 M M M M Started overnight sometime, at 6:00 AM was a very light drizzle, at 7:00 AM drizzle has stopped. NOAA radar shows rain east of Worcester, MA area.
9/3/2017 7:05 AM 0.06 M M M M
9/4/2017 7:05 AM 0.74 M M M M
9/6/2017 7:05 AM 0.00 0.0 M M M
9/7/2017 6:45 AM 1.20 M M M M There was a storm cell that moved through the area at about 11:00 AM on Wed and dropped 0.48 inches of the 1.20 in about 20 minutes.
9/8/2017 7:30 AM 0.02 M M M M
9/9/2017 7:15 AM 0.00 0.0 M M M
9/11/2017 7:05 AM 0.00 0.0 M M M
9/12/2017 6:50 AM 0.00 0.0 M M M
9/15/2017 6:55 AM 0.03 M M M M
9/16/2017 6:52 AM T M M M M very brief shower at ~5:00 PM
9/17/2017 7:10 AM 0.00 0.0 M M M thick fog
9/18/2017 6:45 AM 0.00 0.0 M M M getting a few drops of rain.
9/20/2017 7:05 AM 0.03 M M M M light rain, off and on breezy
9/21/2017 7:20 AM 0.19 M M M M
9/22/2017 7:05 AM 0.00 0.0 M M M high overcast, light breeze
9/23/2017 6:50 AM 0.10 M M M M high, thin clouds w/patches of blue.
9/24/2017 6:50 AM 0.00 0.0 M M M
9/25/2017 7:45 AM 0.00 0.0 M M M clear and sunny
9/30/2017 7:30 AM T M M M M Total of 2.27" plus 2 trace readings at this location for September.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
4/30/2017 5/01/2017 7:40 AM 2 0.08 M M
7/20/2017 7/23/2017 7:00 AM 4 0.00 M M



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