Station Overview Station Location
Station Number IL-DP-34 Latitude 41.9288
Station Name West Chicago 2.7 N Longitude -88.2175
County Du Page Elevation (ft) 781



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 15 2.92 1.47 31 0.85 29 0.62 2 1 5 1 0.0 0 0
Nov 15 2.95 4.48 30 4.48 30 0.00 0 0 12 0 0.0 0 0
Dec 15 2.09 6.17 31 6.17 31 0.00 0 0 16 2 0.0 0 0
Jan 16 1.61 0.79 31 0.79 31 0.00 0 0 7 9 0.0 0 0
Feb 16 1.58 1.55 29 1.55 29 0.00 0 0 8 4 0.0 0 0
March 16 2.17 2.97 28 2.67 25 0.30 3 1 11 0 0.0 0 0
April 16 3.38 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 16 3.98 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 16 3.92 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 16 3.71 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 16 4.33 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 16 3.30 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 35.94" 17.43" 180 days 16.51" 175 0.92" 5 days 2 59 days 16 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
10/1/2015 0.00
10/2/2015 0.00
10/3/2015 0.00
10/4/2015 0.00
10/5/2015 0.00
10/6/2015 0.00
10/7/2015 0.00
10/8/2015 0.00
10/9/2015 0.06
10/10/2015 0.00
10/11/2015 0.00
10/12/2015 0.00
10/13/2015 0.00
10/14/2015 0.00
10/15/2015 0.00
10/16/2015 0.00
10/17/2015 0.00
10/18/2015 0.00
10/19/2015 0.00
10/20/2015 0.00
10/21/2015 0.14
10/22/2015 0.00
10/23/2015 0.00
10/24/2015 **
10/25/2015 0.62
10/26/2015 0.00
10/27/2015 0.00
10/28/2015 0.51
10/29/2015 0.09
10/30/2015 T
10/31/2015 0.05
11/1/2015 0.72
11/2/2015 0.00
11/3/2015 0.00
11/4/2015 0.00
11/5/2015 0.00
11/6/2015 0.09
11/7/2015 0.00
11/8/2015 0.00
11/9/2015 0.00
11/10/2015 0.00
11/11/2015 0.00
11/12/2015 0.59
11/13/2015 0.01
11/14/2015 0.00
11/15/2015 0.00
11/16/2015 0.00
11/17/2015 0.10
11/18/2015 0.91
11/19/2015 0.04
11/20/2015 0.00
11/21/2015 0.50
11/22/2015 0.29
11/23/2015 0.00
11/24/2015 0.00
11/25/2015 0.00
11/26/2015 0.24
11/27/2015 0.97
11/28/2015 0.02
11/29/2015 0.00
11/30/2015 0.00
12/1/2015 0.51
12/2/2015 0.18
12/3/2015 0.03
12/4/2015 0.00
12/5/2015 0.00
12/6/2015 0.00
12/7/2015 0.00
12/8/2015 0.00
12/9/2015 0.00
12/10/2015 0.00
12/11/2015 0.00
12/12/2015 T
12/13/2015 0.10
12/14/2015 1.38
12/15/2015 0.18
12/16/2015 0.06
12/17/2015 0.01
12/18/2015 0.00
12/19/2015 T
12/20/2015 0.00
12/21/2015 0.77
12/22/2015 0.09
12/23/2015 0.00
12/24/2015 0.82
12/25/2015 0.00
12/26/2015 0.00
12/27/2015 0.34
12/28/2015 0.08
12/29/2015 1.56
12/30/2015 0.02
12/31/2015 0.04
Day of YearDaily PrcpMultiday Prcp
1/1/2016 0.00
1/2/2016 0.00
1/3/2016 0.00
1/4/2016 0.00
1/5/2016 T
1/6/2016 0.00
1/7/2016 T
1/8/2016 0.03
1/9/2016 0.19
1/10/2016 0.31
1/11/2016 0.00
1/12/2016 0.08
1/13/2016 0.00
1/14/2016 T
1/15/2016 0.00
1/16/2016 T
1/17/2016 0.00
1/18/2016 0.00
1/19/2016 0.00
1/20/2016 0.04
1/21/2016 T
1/22/2016 0.00
1/23/2016 0.01
1/24/2016 0.00
1/25/2016 0.00
1/26/2016 0.13
1/27/2016 T
1/28/2016 T
1/29/2016 T
1/30/2016 0.00
1/31/2016 T
2/1/2016 0.02
2/2/2016 0.00
2/3/2016 1.20
2/4/2016 T
2/5/2016 T
2/6/2016 0.00
2/7/2016 0.00
2/8/2016 0.01
2/9/2016 0.06
2/10/2016 T
2/11/2016 0.00
2/12/2016 0.00
2/13/2016 0.00
2/14/2016 0.00
2/15/2016 0.15
2/16/2016 T
2/17/2016 0.06
2/18/2016 0.00
2/19/2016 0.00
2/20/2016 0.00
2/21/2016 0.00
2/22/2016 0.00
2/23/2016 0.00
2/24/2016 0.00
2/25/2016 0.04
2/26/2016 0.00
2/27/2016 0.00
2/28/2016 0.00
2/29/2016 0.01
3/1/2016 0.03
3/2/2016 0.07
3/3/2016 0.05
3/4/2016 0.00
3/5/2016 0.06
3/6/2016 0.00
3/7/2016 0.00
3/8/2016 0.00
3/9/2016 0.25
3/10/2016 0.01
3/11/2016 0.00
3/12/2016 0.00
3/13/2016 0.04
3/14/2016 0.70
3/15/2016 **
3/16/2016 **
3/17/2016 0.30
3/18/2016 0.00
3/19/2016 0.00
3/20/2016 0.00
3/21/2016 0.00
3/22/2016 0.00
3/23/2016 0.00
3/24/2016 0.27
3/25/2016 1.02
3/26/2016 0.00
3/27/2016 0.00
3/28/2016 0.17
3/29/2016
3/30/2016
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016
4/2/2016
4/3/2016
4/4/2016
4/5/2016
4/6/2016
4/7/2016
4/8/2016
4/9/2016
4/10/2016
4/11/2016
4/12/2016
4/13/2016
4/14/2016
4/15/2016
4/16/2016
4/17/2016
4/18/2016
4/19/2016
4/20/2016
4/21/2016
4/22/2016
4/23/2016
4/24/2016
4/25/2016
4/26/2016
4/27/2016
4/28/2016
4/29/2016
4/30/2016
5/1/2016
5/2/2016
5/3/2016
5/4/2016
5/5/2016
5/6/2016
5/7/2016
5/8/2016
5/9/2016
5/10/2016
5/11/2016
5/12/2016
5/13/2016
5/14/2016
5/15/2016
5/16/2016
5/17/2016
5/18/2016
5/19/2016
5/20/2016
5/21/2016
5/22/2016
5/23/2016
5/24/2016
5/25/2016
5/26/2016
5/27/2016
5/28/2016
5/29/2016
5/30/2016
5/31/2016
6/1/2016
6/2/2016
6/3/2016
6/4/2016
6/5/2016
6/6/2016
6/7/2016
6/8/2016
6/9/2016
6/10/2016
6/11/2016
6/12/2016
6/13/2016
6/14/2016
6/15/2016
6/16/2016
6/17/2016
6/18/2016
6/19/2016
6/20/2016
6/21/2016
6/22/2016
6/23/2016
6/24/2016
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016
7/2/2016
7/3/2016
7/4/2016
7/5/2016
7/6/2016
7/7/2016
7/8/2016
7/9/2016
7/10/2016
7/11/2016
7/12/2016
7/13/2016
7/14/2016
7/15/2016
7/16/2016
7/17/2016
7/18/2016
7/19/2016
7/20/2016
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016
7/26/2016
7/27/2016
7/28/2016
7/29/2016
7/30/2016
7/31/2016
8/1/2016
8/2/2016
8/3/2016
8/4/2016
8/5/2016
8/6/2016
8/7/2016
8/8/2016
8/9/2016
8/10/2016
8/11/2016
8/12/2016
8/13/2016
8/14/2016
8/15/2016
8/16/2016
8/17/2016
8/18/2016
8/19/2016
8/20/2016
8/21/2016
8/22/2016
8/23/2016
8/24/2016
8/25/2016
8/26/2016
8/27/2016
8/28/2016
8/29/2016
8/30/2016
8/31/2016
9/1/2016
9/2/2016
9/3/2016
9/4/2016
9/5/2016
9/6/2016
9/7/2016
9/8/2016
9/9/2016
9/10/2016
9/11/2016
9/12/2016
9/13/2016
9/14/2016
9/15/2016
9/16/2016
9/17/2016
9/18/2016
9/19/2016
9/20/2016
9/21/2016
9/22/2016
9/23/2016
9/24/2016
9/25/2016
9/26/2016
9/27/2016
9/28/2016
9/29/2016
9/30/2016



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2015 8:00 AM 0.00 0.0 M M M
10/2/2015 7:00 AM 0.00 0.0 M M M
10/3/2015 8:00 AM 0.00 0.0 M M M
10/4/2015 8:00 AM 0.00 0.0 M M M
10/5/2015 8:00 AM 0.00 0.0 M M M
10/6/2015 8:00 AM 0.00 0.0 M M M
10/7/2015 7:00 AM 0.00 0.0 M M M
10/8/2015 8:00 AM 0.00 0.0 M M M
10/9/2015 7:00 AM 0.06 M M M M
10/10/2015 8:00 AM 0.00 0.0 M M M
10/11/2015 8:00 AM 0.00 0.0 M M M
10/12/2015 8:00 AM 0.00 0.0 M M M
10/13/2015 8:00 AM 0.00 0.0 M M M
10/14/2015 7:00 AM 0.00 0.0 M M M
10/15/2015 8:00 AM 0.00 0.0 M M M
10/16/2015 7:00 AM 0.00 0.0 M M M
10/17/2015 8:00 AM 0.00 0.0 M M M
10/18/2015 8:00 AM 0.00 0.0 M M M
10/19/2015 8:00 AM 0.00 0.0 M M M
10/20/2015 8:00 AM 0.00 0.0 M M M
10/21/2015 7:00 AM 0.14 M M M M First measurable rain report since 10/9. Wish we had gotten more!
10/22/2015 8:00 AM 0.00 0.0 M M M
10/23/2015 7:00 AM 0.00 0.0 M M M
10/26/2015 8:00 AM 0.00 0.0 M M M
10/27/2015 8:00 AM 0.00 0.0 M M M
10/28/2015 8:00 AM 0.51 M M M M
10/29/2015 7:30 AM 0.09 M M M M
10/30/2015 7:00 AM T M M M M This was "little t" - we saw some sprinkles on Thursday, but there was nothing in the gauge.
10/31/2015 8:00 AM 0.05 M M M M Not rounded. Really was o.05".
11/1/2015 8:00 AM 0.72 M M M M
11/2/2015 8:00 AM 0.00 0.0 M M M
11/3/2015 8:00 AM 0.00 0.0 M M M
11/4/2015 7:00 AM 0.00 0.0 M M M
11/5/2015 8:00 AM 0.00 0.0 M M M
11/6/2015 7:00 AM 0.09 M M M M
11/7/2015 8:00 AM 0.00 0.0 M M M
11/8/2015 8:00 AM 0.00 0.0 M M M
11/9/2015 8:00 AM 0.00 0.0 M M M
11/10/2015 8:00 AM 0.00 0.0 M M M
11/11/2015 7:00 AM 0.00 0.0 M M M
11/12/2015 8:00 AM 0.59 M M M M
11/13/2015 7:00 AM 0.01 M M M M
11/14/2015 8:00 AM 0.00 0.0 M M M
11/15/2015 8:00 AM 0.00 0.0 M M M
11/16/2015 8:00 AM 0.00 0.0 M M M
11/17/2015 8:00 AM 0.10 M M M M Not rounded - really was 0.10"
11/18/2015 7:00 AM 0.91 M M M M
11/19/2015 8:00 AM 0.04 M M M M
11/20/2015 7:00 AM 0.00 0.0 M M M
11/21/2015 8:00 AM 0.50 M M M M Not rounded. Really was 0.50", the result of melting about 4" of heavy, wet snow.
11/22/2015 8:00 AM 0.29 M M M M
11/23/2015 8:00 AM 0.00 0.0 M M M
11/24/2015 8:00 AM 0.00 0.0 M M M
11/25/2015 7:00 AM 0.00 0.0 M M M
11/26/2015 8:00 AM 0.24 M M M M
11/27/2015 8:00 AM 0.97 M M M M
11/28/2015 8:00 AM 0.02 M M M M
11/29/2015 8:00 AM 0.00 0.0 M M M
11/30/2015 8:00 AM 0.00 0.0 M M M
12/1/2015 8:00 AM 0.51 M M M M
12/2/2015 8:00 AM 0.18 M M M M
12/3/2015 8:00 AM 0.03 M M M M
12/4/2015 7:00 AM 0.00 0.0 M M M
12/5/2015 8:00 AM 0.00 0.0 M M M
12/6/2015 8:00 AM 0.00 0.0 M M M
12/7/2015 8:00 AM 0.00 0.0 M M M
12/8/2015 8:00 AM 0.00 0.0 M M M
12/9/2015 8:00 AM 0.00 0.0 M M M
12/10/2015 8:00 AM 0.00 0.0 M M M
12/11/2015 7:00 AM 0.00 0.0 M M M
12/12/2015 8:00 AM T M M M M This was "Big T" - some in the gauge, but less than 0.01"
12/13/2015 8:45 AM 0.10 M M M M Not rounded - really was 0.10"
12/14/2015 8:00 AM 1.38 M M M M
12/15/2015 8:00 AM 0.18 M M M M
12/16/2015 7:00 AM 0.06 M M M M
12/17/2015 8:00 AM 0.01 M M M M
12/18/2015 7:00 AM 0.00 0.0 M M M
12/19/2015 8:00 AM T M M M M This was "little t" - saw a few snowflakes in the air, but nothing in the gauge.
12/20/2015 8:00 AM 0.00 0.0 M M M
12/21/2015 8:00 AM 0.77 M M M M
12/22/2015 8:00 AM 0.09 M M M M
12/23/2015 7:00 AM 0.00 0.0 M M M
12/24/2015 8:00 AM 0.82 M M M M
12/25/2015 8:00 AM 0.00 0.0 M M M
12/26/2015 8:00 AM 0.00 0.0 M M M
12/27/2015 8:00 AM 0.34 M M M M
12/28/2015 8:00 AM 0.08 M M M M
12/29/2015 8:00 AM 1.56 M M M M This was from an assortment of rain, sleet, and other frozen precipitation.
12/30/2015 7:15 AM 0.02 M M M M
12/31/2015 8:00 AM 0.04 M M M M
1/1/2016 8:00 AM 0.00 0.0 M M M
1/2/2016 8:00 AM 0.00 0.0 M M M
1/3/2016 8:00 AM 0.00 0.0 M M M We had real sunshine today!!!
1/4/2016 8:00 AM 0.00 0.0 M M M
1/5/2016 8:00 AM T M M M M This was "little t" - saw a few snowflakes in the air on Monday, but nothing in the gauge.
1/6/2016 8:00 AM 0.00 0.0 M M M
1/7/2016 8:00 AM T M M M M This was "little t" - some in the air, none in the gauge.
1/8/2016 7:00 AM 0.03 M M M M
1/9/2016 8:00 AM 0.19 M M M M
1/10/2016 8:00 AM 0.31 M M M M
1/11/2016 8:00 AM 0.00 0.0 M M M
1/12/2016 8:00 AM 0.08 M M M M
1/13/2016 7:00 AM 0.00 0.0 M M M Boy, it's a cold morning. My car thought the temperature was -1.
1/14/2016 8:00 AM T M M M M This was "Big T" - some snow in the gauge, but it melted down to just one drop of water in the bottom of the tube.
1/15/2016 7:00 AM 0.00 0.0 M M M
1/16/2016 8:00 AM T M M M M This was "little t" - just a few snowflakes in the air on Friday.
1/17/2016 8:00 AM 0.00 0.0 M M M
1/18/2016 8:00 AM 0.00 0.0 M M M
1/19/2016 8:00 AM 0.00 0.0 M M M
1/20/2016 8:00 AM 0.04 M M M M
1/21/2016 8:00 AM T M M M M This was "little t" - saw some snowflakes in the air, but nothing in the gauge.
1/22/2016 7:00 AM 0.00 0.0 M M M
1/23/2016 8:00 AM 0.01 M M M M
1/24/2016 8:00 AM 0.00 0.0 M M M
1/25/2016 8:00 AM 0.00 0.0 M M M
1/26/2016 8:00 AM 0.13 M M M M
1/27/2016 7:00 AM T M M M M This was "little t" - saw a few snowflakes in the air on Tuesday, but nothing in the gauge.
1/28/2016 7:00 AM T M M M M This was "little t" - saw a few snowflakes in the air when I was leaving the house at 7:00 on Wednesday.
1/29/2016 7:00 AM T M M M M This was "little t" - I saw some mixed precipitation on the skylight on Thursday, but there was nothing in the gauge on Friday morning, much to my surprise.
1/30/2016 8:00 AM 0.00 0.0 M M M
1/31/2016 8:00 AM T 0.0 M M M This was "Big T" - one big drop in the gauge, but less than 0.01".
2/1/2016 7:00 AM 0.02 M M M M
2/2/2016 8:00 AM 0.00 0.0 M M M
2/3/2016 7:00 AM 1.20 M M M M Not rounded. Really was 1.20"
2/4/2016 8:00 AM T M M M M This was "little t" - a little mixed precipitation in the air yesterday, but nothing in the gauge.
2/5/2016 7:00 AM T M M M M Strictly speaking, this was "Big T". There was something in the gauge - about 3 snowflakes!
2/6/2016 8:00 AM 0.00 0.0 M M M
2/7/2016 8:00 AM 0.00 0.0 M M M
2/8/2016 8:00 AM 0.01 M M M M
2/9/2016 8:00 AM 0.06 M M M M
2/10/2016 7:00 AM T M M M M This was "Big T" - there was some snow in the gauge, but it melted down to about 0.005".
2/11/2016 8:00 AM 0.00 0.0 M M M
2/12/2016 7:00 AM 0.00 0.0 M M M
2/13/2016 8:00 AM 0.00 0.0 M M M
2/14/2016 8:00 AM 0.00 0.0 M M M
2/15/2016 8:00 AM 0.15 M M M M Not rounded - really was 0.15" - melted down light fluffy snow.
2/16/2016 8:00 AM T M M M M This was "Big T" - the snow in the gauge melted down to one big drop of water, but it was much less than 0.01".
2/17/2016 8:00 AM 0.06 M M M M
2/18/2016 8:00 AM 0.00 0.0 M M M Wednesday was a beautiful sunny day.
2/19/2016 7:00 AM 0.00 0.0 M M M
2/20/2016 8:00 AM 0.00 0.0 M M M
2/21/2016 8:00 AM 0.00 0.0 M M M
2/22/2016 8:00 AM 0.00 0.0 M M M
2/23/2016 8:00 AM 0.00 0.0 M M M
2/24/2016 7:00 AM 0.00 0.0 M M M
2/25/2016 8:00 AM 0.04 M M M M
2/26/2016 7:00 AM 0.00 0.0 M M M
2/27/2016 8:00 AM 0.00 0.0 M M M
2/28/2016 8:00 AM 0.00 0.0 M M M
2/29/2016 7:30 AM 0.01 M M M M
3/1/2016 8:00 AM 0.03 M M M M
3/2/2016 7:00 AM 0.07 M M M M
3/3/2016 8:00 AM 0.05 M M M M Not rounded - really was 0.05" from melted snow.
3/4/2016 7:00 AM 0.00 0.0 M M M
3/5/2016 8:00 AM 0.06 M M M M
3/6/2016 8:00 AM 0.00 0.0 M M M
3/7/2016 8:00 AM 0.00 0.0 M M M
3/8/2016 8:00 AM 0.00 0.0 M M M
3/9/2016 7:00 AM 0.25 M M M M Not rounded - really was 0.25".
3/10/2016 8:00 AM 0.01 M M M M
3/11/2016 8:00 AM 0.00 0.0 M M M
3/12/2016 8:00 AM 0.00 0.0 M M M
3/13/2016 8:15 AM 0.04 M M M M
3/14/2016 8:00 AM 0.70 M M M M Not rounded. Really was 0.70". Nice slow, steady rain all day.
3/18/2016 8:00 AM 0.00 0.0 M M M
3/19/2016 8:00 AM 0.00 0.0 M M M
3/20/2016 8:00 AM 0.00 0.0 M M M
3/21/2016 8:00 AM 0.00 0.0 M M M
3/22/2016 8:00 AM 0.00 0.0 M M M
3/23/2016 7:00 AM 0.00 0.0 M M M
3/24/2016 8:00 AM 0.27 M M M M
3/25/2016 8:00 AM 1.02 M M M M
3/26/2016 8:00 AM 0.00 0.0 M M M
3/27/2016 8:00 AM 0.00 0.0 M M M
3/28/2016 8:00 AM 0.17 M M M M This is my final COCORAHS report - we're moving to an apartment. I really enjoyed this and I'm glad that I was able to go out with a "perfect reporting record" last year. Thank you so much to the whole COCORAHS team.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/24/2015 10/25/2015 8:00 AM 2 0.62 M M
3/15/2016 3/17/2016 8:00 AM 3 0.30 M M Not rounded. Really was 0.30".



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