Station Overview Station Location
Station Number IL-DP-75 Latitude 41.77288
Station Name Naperville 1.1 NW Longitude -88.17127
County Du Page Elevation (ft) 692



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 11 2.98 2.57 17 2.53 14 0.04 3 1 9 1 0.0 0 0
Nov 11 3.22 2.23 15 2.23 15 0.00 0 0 7 2 0.0 0 0
Dec 11 2.26 1.65 2 1.65 2 0.00 0 0 2 0 1.4 2 1
Jan 12 1.74 0.00 0 0.00 0 0.00 0 0 0 0 12.4 5 6
Feb 12 1.73 0.00 0 0.00 0 0.00 0 0 0 0 4.7 4 4
March 12 2.35 1.24 3 1.24 3 0.00 0 0 2 0 0.2 1 0
April 12 3.54 2.75 12 2.75 12 0.00 0 0 9 0 0.0 0 0
May 12 4.06 2.36 20 2.36 16 0.00 4 0 8 1 0.0 0 0
June 12 4.12 1.88 22 1.07 12 0.81 10 1 4 0 0.0 0 0
July 12 3.94 2.52 24 2.52 24 0.00 0 0 7 5 0.0 0 0
Aug 12 4.21 3.90 19 1.11 15 2.79 4 1 8 0 0.0 0 0
Sept 12 3.31 1.73 23 1.73 23 0.00 0 0 7 1 0.0 0 0
Water Year Totals: 37.46" 22.83" 157 days 19.19" 136 3.64" 21 days 3 63 days 10 days 18.7" 12 days 11 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
10/1/2011 0.04
10/2/2011
10/3/2011
10/4/2011
10/5/2011
10/6/2011
10/7/2011
10/8/2011
10/9/2011
10/10/2011 0.00
10/11/2011
10/12/2011 0.00
10/13/2011 1.12
10/14/2011 0.19
10/15/2011 0.00
10/16/2011
10/17/2011
10/18/2011
10/19/2011 0.08
10/20/2011 0.38
10/21/2011 0.03
10/22/2011 0.00
10/23/2011
10/24/2011 0.37
10/25/2011
10/26/2011 0.11
10/27/2011 T **
10/28/2011 **
10/29/2011 0.04
10/30/2011
10/31/2011 0.21
11/1/2011
11/2/2011 0.00
11/3/2011 0.05
11/4/2011 0.14
11/5/2011 0.00
11/6/2011 0.00
11/7/2011 T
11/8/2011 0.99
11/9/2011 0.99
11/10/2011 0.03
11/11/2011 0.01
11/12/2011
11/13/2011
11/14/2011 T
11/15/2011 0.02
11/16/2011 0.00
11/17/2011 0.00
11/18/2011 0.00
11/19/2011
11/20/2011
11/21/2011
11/22/2011
11/23/2011
11/24/2011
11/25/2011
11/26/2011
11/27/2011
11/28/2011
11/29/2011
11/30/2011
12/1/2011
12/2/2011
12/3/2011
12/4/2011
12/5/2011
12/6/2011
12/7/2011
12/8/2011
12/9/2011 M
12/10/2011
12/11/2011
12/12/2011
12/13/2011
12/14/2011 1.17
12/15/2011 0.48
12/16/2011
12/17/2011 M
12/18/2011
12/19/2011
12/20/2011
12/21/2011
12/22/2011
12/23/2011
12/24/2011
12/25/2011
12/26/2011
12/27/2011
12/28/2011
12/29/2011
12/30/2011
12/31/2011
Day of YearDaily PrcpMultiday Prcp
1/1/2012
1/2/2012
1/3/2012
1/4/2012
1/5/2012
1/6/2012
1/7/2012
1/8/2012
1/9/2012
1/10/2012
1/11/2012
1/12/2012
1/13/2012 M
1/14/2012
1/15/2012
1/16/2012
1/17/2012
1/18/2012 M
1/19/2012 M
1/20/2012
1/21/2012 M
1/22/2012 M
1/23/2012
1/24/2012
1/25/2012
1/26/2012
1/27/2012
1/28/2012 M
1/29/2012
1/30/2012
1/31/2012
2/1/2012
2/2/2012
2/3/2012
2/4/2012
2/5/2012
2/6/2012
2/7/2012
2/8/2012
2/9/2012
2/10/2012
2/11/2012 M
2/12/2012
2/13/2012
2/14/2012 M
2/15/2012
2/16/2012
2/17/2012
2/18/2012
2/19/2012
2/20/2012
2/21/2012
2/22/2012
2/23/2012
2/24/2012 M
2/25/2012 M
2/26/2012
2/27/2012
2/28/2012
2/29/2012
3/1/2012
3/2/2012
3/3/2012 M
3/4/2012
3/5/2012
3/6/2012
3/7/2012
3/8/2012
3/9/2012
3/10/2012
3/11/2012
3/12/2012
3/13/2012
3/14/2012
3/15/2012
3/16/2012
3/17/2012
3/18/2012
3/19/2012 0.00
3/20/2012
3/21/2012
3/22/2012
3/23/2012 0.73
3/24/2012 0.51
3/25/2012
3/26/2012
3/27/2012
3/28/2012
3/29/2012
3/30/2012
3/31/2012
Day of YearDaily PrcpMultiday Prcp
4/1/2012 0.24
4/2/2012
4/3/2012
4/4/2012
4/5/2012
4/6/2012
4/7/2012
4/8/2012
4/9/2012
4/10/2012
4/11/2012
4/12/2012
4/13/2012
4/14/2012 0.04
4/15/2012 1.36
4/16/2012 0.35
4/17/2012
4/18/2012
4/19/2012 0.07
4/20/2012 0.05
4/21/2012
4/22/2012
4/23/2012
4/24/2012 0.00
4/25/2012 0.00
4/26/2012 0.04
4/27/2012 0.00
4/28/2012 0.36
4/29/2012
4/30/2012 0.24
5/1/2012 0.04
5/2/2012 0.30
5/3/2012
5/4/2012 0.54
5/5/2012 0.00
5/6/2012 0.00
5/7/2012 1.08
5/8/2012 0.14
5/9/2012
5/10/2012 T
5/11/2012
5/12/2012 0.11
5/13/2012
5/14/2012
5/15/2012
5/16/2012 0.05
5/17/2012 0.00
5/18/2012
5/19/2012
5/20/2012 0.00
5/21/2012 0.10
5/22/2012 0.00
5/23/2012
5/24/2012
5/25/2012 0.00
5/26/2012 0.00
5/27/2012
5/28/2012 **
5/29/2012 **
5/30/2012 **
5/31/2012 **
6/1/2012 **
6/2/2012 **
6/3/2012 **
6/4/2012 **
6/5/2012 **
6/6/2012 **
6/7/2012 **
6/8/2012 **
6/9/2012 **
6/10/2012 0.81
6/11/2012 0.00
6/12/2012
6/13/2012 0.00
6/14/2012
6/15/2012
6/16/2012
6/17/2012 0.53
6/18/2012 0.00
6/19/2012
6/20/2012 0.00
6/21/2012
6/22/2012 0.05
6/23/2012 0.00
6/24/2012 0.00
6/25/2012
6/26/2012
6/27/2012 0.00
6/28/2012 0.00
6/29/2012 0.11
6/30/2012 0.38
Day of YearDaily PrcpMultiday Prcp
7/1/2012 0.00
7/2/2012
7/3/2012
7/4/2012
7/5/2012 0.00
7/6/2012 0.00
7/7/2012 0.00
7/8/2012 0.00
7/9/2012
7/10/2012 T
7/11/2012 0.00
7/12/2012 0.00
7/13/2012 0.00
7/14/2012 0.52
7/15/2012
7/16/2012
7/17/2012
7/18/2012 0.00
7/19/2012 0.87
7/20/2012 T
7/21/2012 0.00
7/22/2012 0.00
7/23/2012 T
7/24/2012 0.88
7/25/2012 0.04
7/26/2012 0.11
7/27/2012 T
7/28/2012 0.02
7/29/2012 0.00
7/30/2012 T
7/31/2012 0.08
8/1/2012 0.00
8/2/2012 0.00
8/3/2012
8/4/2012
8/5/2012 0.34
8/6/2012
8/7/2012
8/8/2012
8/9/2012 0.04
8/10/2012 0.03
8/11/2012
8/12/2012
8/13/2012 0.19
8/14/2012 0.13
8/15/2012
8/16/2012 0.25
8/17/2012 0.04
8/18/2012
8/19/2012
8/20/2012 0.00
8/21/2012 0.09
8/22/2012
8/23/2012 0.00
8/24/2012 0.00
8/25/2012 **
8/26/2012 **
8/27/2012 **
8/28/2012 2.79
8/29/2012 0.00
8/30/2012 0.00
8/31/2012
9/1/2012 0.00
9/2/2012 0.22
9/3/2012 0.00
9/4/2012
9/5/2012 0.29
9/6/2012
9/7/2012 0.30
9/8/2012 T
9/9/2012 0.12
9/10/2012 0.00
9/11/2012
9/12/2012 0.00
9/13/2012
9/14/2012 0.23
9/15/2012 0.00
9/16/2012 0.00
9/17/2012 0.00
9/18/2012 0.41
9/19/2012 0.00
9/20/2012
9/21/2012 0.00
9/22/2012 0.16
9/23/2012 0.00
9/24/2012 0.00
9/25/2012
9/26/2012 0.00
9/27/2012 0.00
9/28/2012 0.00
9/29/2012 0.00
9/30/2012



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 9:00 AM 0.04 M M M M
10/10/2011 9:00 AM 0.00 0.0 M M M
10/12/2011 9:00 AM 0.00 0.0 M M M
10/13/2011 9:00 AM 1.12 M M M M
10/14/2011 9:00 AM 0.19 M M M M
10/15/2011 9:00 AM 0.00 0.0 M M M
10/19/2011 9:00 AM 0.08 M M M M
10/20/2011 9:00 AM 0.38 M M M M
10/21/2011 9:00 AM 0.03 M M M M
10/22/2011 9:00 AM 0.00 0.0 M M M
10/24/2011 9:00 AM 0.37 M M M M
10/26/2011 9:00 AM 0.11 M M M M
10/27/2011 9:00 AM T M M M M
10/31/2011 9:00 AM 0.21 M M M M
11/2/2011 9:00 AM 0.00 0.0 M M M
11/3/2011 9:00 AM 0.05 M M M M
11/4/2011 9:00 AM 0.14 M M M M
11/5/2011 9:00 AM 0.00 0.0 M M M
11/6/2011 9:00 AM 0.00 0.0 M M M
11/7/2011 9:00 AM T M M M M
11/8/2011 9:00 AM 0.99 M M M M
11/9/2011 9:00 AM 0.99 M M M M
11/10/2011 9:00 AM 0.03 M M M M
11/11/2011 9:00 AM 0.01 T M M M
11/14/2011 9:00 AM T M M M M
11/15/2011 9:00 AM 0.02 M M M M
11/16/2011 9:00 AM 0.00 0.0 M M M
11/17/2011 9:00 AM 0.00 0.0 M M M
11/18/2011 9:00 AM 0.00 0.0 M M M
12/9/2011 9:00 AM M 0.5 M T M
12/14/2011 9:00 AM 1.17 M M M M -RA to RA at ob time
12/15/2011 9:00 AM 0.48 M M M M Total storm total 1.65. 1.17 from yesterday and .48 today.
12/17/2011 9:00 AM M 0.9 M 1.0 M
1/13/2012 8:00 AM M 4.2 M 4.0 M 3.0 from approx 8:30 AM - 7 PM and 1.2 from 7 PM til overnight ending of the snowfall
1/18/2012 9:00 AM M 0.2 M 0.5 M
1/19/2012 9:00 AM M 0.2 M 0.5 M
1/21/2012 9:00 AM M 6.5 M 6.5 M snow roughly 10A-8:30P
1/22/2012 9:00 AM M T M 5.5 M -sn at ob time very light snow
1/28/2012 9:00 AM M 1.3 M 1.0 M
2/11/2012 9:00 AM M 0.5 M 0.5 M
2/14/2012 9:00 AM M 1.0 M 1.0 M -sn at ob time...snow very light
2/24/2012 7:50 AM M 3.1 M 3.0 M -sn at ob time....snow very light. Very wet snow sticking to anything.
2/25/2012 9:00 AM M 0.1 M 1.5 M storm total snow 3.2
3/3/2012 9:00 AM M 0.2 M T M few flakes in air at ob time
3/19/2012 9:00 AM 0.00 0.0 M M M
3/23/2012 9:00 AM 0.73 M M M M
3/24/2012 9:00 AM 0.51 M M M M
4/1/2012 9:00 AM 0.24 M M M M
4/14/2012 9:00 AM 0.04 M M M M
4/15/2012 9:00 AM 1.36 M M M M
4/16/2012 9:00 AM 0.35 M M M M
4/19/2012 9:00 AM 0.07 M M M M
4/20/2012 9:00 AM 0.05 M M M M
4/24/2012 9:00 AM 0.00 0.0 M M M
4/25/2012 8:00 AM 0.00 0.0 M M M
4/26/2012 9:00 AM 0.04 M M M M
4/27/2012 9:00 AM 0.00 0.0 M M M
4/28/2012 9:00 AM 0.36 M M M M
4/30/2012 9:00 AM 0.24 M M M M =dz at ob time
5/1/2012 9:00 AM 0.04 M M M M
5/2/2012 9:00 AM 0.30 M M M M
5/4/2012 9:00 AM 0.54 M M M M
5/5/2012 9:00 AM 0.00 0.0 M M M
5/6/2012 9:00 AM 0.00 0.0 M M M
5/7/2012 9:00 AM 1.08 M M M M -R at ob time.
5/8/2012 9:00 AM 0.14 M M M M
5/10/2012 9:00 AM T M M M M
5/12/2012 9:00 AM 0.11 M M M M
5/16/2012 9:00 AM 0.05 M M M M
5/17/2012 9:00 AM 0.00 0.0 M M M
5/20/2012 9:00 AM 0.00 0.0 M M M
5/21/2012 9:00 AM 0.10 M M M M
5/22/2012 9:00 AM 0.00 0.0 M M M
5/25/2012 9:00 AM 0.00 0.0 M M M
5/26/2012 9:00 AM 0.00 0.0 M M M
6/11/2012 9:00 AM 0.00 0.0 M M M
6/13/2012 9:00 AM 0.00 0.0 M M M
6/17/2012 9:00 AM 0.53 M M M M
6/18/2012 9:00 AM 0.00 0.0 M M M
6/20/2012 9:00 AM 0.00 0.0 M M M
6/22/2012 9:00 AM 0.05 M M M M
6/23/2012 9:00 AM 0.00 0.0 M M M
6/24/2012 9:00 AM 0.00 0.0 M M M
6/27/2012 9:00 AM 0.00 0.0 M M M
6/28/2012 9:00 AM 0.00 0.0 M M M
6/29/2012 9:00 AM 0.11 M M M M
6/30/2012 9:00 AM 0.38 M M M M
7/1/2012 9:00 AM 0.00 0.0 M M M
7/5/2012 9:00 AM 0.00 0.0 M M M
7/6/2012 9:00 AM 0.00 0.0 M M M
7/7/2012 9:00 AM 0.00 0.0 M M M
7/8/2012 9:00 AM 0.00 0.0 M M M
7/10/2012 9:00 AM T M M M M
7/11/2012 9:00 AM 0.00 0.0 M M M
7/12/2012 9:00 AM 0.00 0.0 M M M
7/13/2012 9:00 AM 0.00 0.0 M M M
7/14/2012 9:00 AM 0.52 M M M M
7/18/2012 9:00 AM 0.00 0.0 M M M
7/19/2012 9:00 AM 0.87 M M M M largest rainfall total in 7 weeks
7/20/2012 9:00 AM T M M M M
7/21/2012 9:00 AM 0.00 0.0 M M M
7/22/2012 9:00 AM 0.00 0.0 M M M
7/23/2012 9:00 AM T M M M M
7/24/2012 7:45 AM 0.88 M M M M -ra at ob time
7/25/2012 9:00 AM 0.04 M M M M
7/26/2012 9:00 AM 0.11 M M M M
7/27/2012 9:00 AM T M M M M
7/28/2012 9:00 AM 0.02 M M M M
7/29/2012 9:00 AM 0.00 0.0 M M M
7/30/2012 9:00 AM T M M M M
7/31/2012 9:00 AM 0.08 M M M M
8/1/2012 9:00 AM 0.00 0.0 M M M
8/2/2012 9:00 AM 0.00 0.0 M M M
8/5/2012 9:00 AM 0.34 M M M M
8/9/2012 9:00 AM 0.04 M M M M
8/10/2012 9:00 AM 0.03 M M M M
8/13/2012 9:00 AM 0.19 M M M M
8/14/2012 9:00 AM 0.13 M M M M
8/16/2012 9:50 AM 0.25 M M M M -ra has ended
8/17/2012 9:00 AM 0.04 M M M M
8/20/2012 9:00 AM 0.00 0.0 M M M
8/21/2012 9:00 AM 0.09 M M M M
8/23/2012 9:00 AM 0.00 0.0 M M M
8/24/2012 9:00 AM 0.00 0.0 M M M
8/29/2012 9:00 AM 0.00 0.0 M M M
8/30/2012 9:00 AM 0.00 0.0 M M M
9/1/2012 9:00 AM 0.00 0.0 M M M
9/2/2012 9:00 AM 0.22 M M M M
9/3/2012 9:00 AM 0.00 0.0 M M M
9/5/2012 9:00 AM 0.29 M M M M
9/7/2012 9:30 AM 0.30 M M M M
9/8/2012 9:00 AM T M M M M
9/9/2012 9:00 AM 0.12 M M M M
9/10/2012 9:00 AM 0.00 0.0 M M M
9/12/2012 9:00 AM 0.00 0.0 M M M
9/14/2012 9:00 AM 0.23 M M M M
9/15/2012 9:00 AM 0.00 0.0 M M M
9/16/2012 9:00 AM 0.00 0.0 M M M
9/17/2012 9:00 AM 0.00 0.0 M M M
9/18/2012 9:00 AM 0.41 M M M M
9/19/2012 9:00 AM 0.00 0.0 M M M
9/21/2012 8:00 AM 0.00 0.0 M M M
9/22/2012 9:00 AM 0.16 M M M M
9/23/2012 9:00 AM 0.00 0.0 M M M
9/24/2012 9:00 AM 0.00 0.0 M M M
9/26/2012 9:00 AM 0.00 0.0 M M M
9/27/2012 9:00 AM 0.00 0.0 M M M
9/28/2012 9:00 AM 0.00 0.0 M M M
9/29/2012 9:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/27/2011 10/29/2011 9:00 AM 3 0.04 M M
5/28/2012 6/10/2012 9:00 AM 14 0.81 M M
8/25/2012 8/28/2012 9:00 AM 4 2.79 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