Station Overview Station Location
Station Number IL-CK-87 Latitude 42.082221
Station Name Arlington Heights 1.3 SW Longitude -88.001904
County Cook Elevation (ft) 722



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 17 2.97 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 17 3.01 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 17 2.24 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 18 1.74 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 18 1.68 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 18 2.30 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 18 3.42 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 18 4.06 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 18 4.02 3.80 9 3.80 9 0.00 0 0 3 0 0.0 0 0
July 18 3.83 0.86 31 0.86 31 0.00 0 0 9 0 0.0 0 0
Aug 18 4.50 9.82 31 9.82 28 0.00 3 1 13 1 0.0 0 0
Sept 18 3.40 3.40 29 2.88 26 0.52 3 1 8 2 0.0 0 0
Water Year Totals: 37.17" 17.88" 100 days 17.36" 94 0.52" 6 days 2 33 days 3 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
10/1/2017
10/2/2017
10/3/2017
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017
10/9/2017
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017
10/30/2017
10/31/2017
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017
11/6/2017
11/7/2017
11/8/2017
11/9/2017
11/10/2017
11/11/2017
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017
11/19/2017
11/20/2017
11/21/2017
11/22/2017
11/23/2017
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017
11/29/2017
11/30/2017
12/1/2017
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017
12/17/2017
12/18/2017
12/19/2017
12/20/2017
12/21/2017
12/22/2017
12/23/2017
12/24/2017
12/25/2017
12/26/2017
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018
5/20/2018
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018
6/20/2018
6/21/2018
6/22/2018 2.25
6/23/2018 0.61
6/24/2018 0.00
6/25/2018 0.00
6/26/2018 0.00
6/27/2018 0.94
6/28/2018 0.00
6/29/2018 0.00
6/30/2018 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.00
7/2/2018 0.02
7/3/2018 0.00
7/4/2018 0.00
7/5/2018 0.00
7/6/2018 0.06
7/7/2018 0.00
7/8/2018 0.00
7/9/2018 0.00
7/10/2018 0.00
7/11/2018 0.00
7/12/2018 0.00
7/13/2018 0.00
7/14/2018 0.02
7/15/2018 0.18
7/16/2018 0.00
7/17/2018 0.02
7/18/2018 0.00
7/19/2018 0.00
7/20/2018 0.00
7/21/2018 0.14
7/22/2018 0.31
7/23/2018 0.10
7/24/2018 0.01
7/25/2018 0.00
7/26/2018 0.00
7/27/2018 0.00
7/28/2018 0.00
7/29/2018 0.00
7/30/2018 0.00
7/31/2018 0.00
8/1/2018 0.00
8/2/2018 T
8/3/2018 0.08
8/4/2018 0.00
8/5/2018 0.00
8/6/2018 0.09
8/7/2018 0.09
8/8/2018 1.47
8/9/2018 0.00
8/10/2018 0.21
8/11/2018 **
8/12/2018 **
8/13/2018 0.00
8/14/2018 0.00
8/15/2018 0.00
8/16/2018 1.95
8/17/2018 0.26
8/18/2018 0.15
8/19/2018 0.00
8/20/2018 0.00
8/21/2018 1.06
8/22/2018 0.03
8/23/2018 0.00
8/24/2018 0.00
8/25/2018 1.43
8/26/2018 0.00
8/27/2018 0.00
8/28/2018 0.00
8/29/2018 2.99
8/30/2018 0.01
8/31/2018 0.00
9/1/2018 0.00
9/2/2018 0.94
9/3/2018 1.37
9/4/2018 0.12
9/5/2018 **
9/6/2018 **
9/7/2018 0.52
9/8/2018 M
9/9/2018 0.00
9/10/2018 0.00
9/11/2018 0.00
9/12/2018 0.00
9/13/2018 0.00
9/14/2018 0.00
9/15/2018 0.00
9/16/2018 0.00
9/17/2018 0.00
9/18/2018 0.00
9/19/2018 T
9/20/2018 0.07
9/21/2018 0.01
9/22/2018 0.00
9/23/2018 0.00
9/24/2018 0.00
9/25/2018 T
9/26/2018 0.21
9/27/2018 0.00
9/28/2018 0.00
9/29/2018 0.10
9/30/2018 0.06



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
6/22/2018 6:45 AM 2.25 M M M M
6/23/2018 7:36 AM 0.61 M M M M
6/24/2018 8:11 AM 0.00 M M M M
6/25/2018 6:40 AM 0.00 M M M M
6/26/2018 6:40 AM 0.00 0.0 M M M Observed no rainfall, but from looking at the driveway, it appeared as if a few raindrops had just fallen. Initially reported "trace", but seeing no other evidence of rain or other marks on other drives or the street, changed report to "0.00".
6/27/2018 6:33 AM 0.94 M M M M
6/28/2018 6:26 AM 0.00 M M M M
6/29/2018 6:30 AM 0.00 M M M M
6/30/2018 8:00 AM 0.00 M M M M
7/1/2018 7:35 AM 0.00 M M M M
7/2/2018 6:38 AM 0.02 M M M M
7/3/2018 6:42 AM 0.00 M M M M
7/4/2018 7:13 AM 0.00 M M M M
7/5/2018 6:40 AM 0.00 M M M M
7/6/2018 6:09 AM 0.06 M M M M
7/7/2018 7:30 AM 0.00 M M M M
7/8/2018 5:35 AM 0.00 M M M M
7/9/2018 6:15 AM 0.00 M M M M
7/10/2018 6:35 AM 0.00 M M M M
7/11/2018 6:44 AM 0.00 M M M M
7/12/2018 4:22 AM 0.00 M M M M
7/13/2018 6:32 AM 0.00 M M M M
7/14/2018 4:22 AM 0.02 M M M M
7/15/2018 8:39 AM 0.18 M M M M
7/16/2018 6:13 AM 0.00 M M M M
7/17/2018 6:40 AM 0.02 M M M M
7/18/2018 6:35 AM 0.00 M M M M
7/19/2018 6:38 AM 0.00 M M M M
7/20/2018 6:08 AM 0.00 M M M M
7/21/2018 6:41 AM 0.14 M M M M
7/22/2018 7:48 AM 0.31 M M M M
7/23/2018 7:01 AM 0.10 M M M M
7/24/2018 5:44 AM 0.01 M M M M
7/25/2018 6:56 AM 0.00 M M M M
7/26/2018 6:37 AM 0.00 M M M M
7/27/2018 6:42 AM 0.00 M M M M
7/28/2018 5:42 AM 0.00 M M M M
7/29/2018 7:30 AM 0.00 M M M M
7/30/2018 6:43 AM 0.00 M M M M
7/31/2018 6:36 AM 0.00 M M M M
8/1/2018 6:32 AM 0.00 M M M M
8/2/2018 6:28 AM T M M M M
8/3/2018 6:16 AM 0.08 M M M M
8/4/2018 6:23 AM 0.00 M M M M
8/5/2018 6:31 AM 0.00 M M M M
8/6/2018 6:28 AM 0.09 M M M M
8/7/2018 6:04 AM 0.09 M M M M
8/8/2018 6:39 AM 1.47 M M M M
8/9/2018 6:36 AM 0.00 M M M M
8/10/2018 5:01 AM 0.21 M M M M
8/14/2018 6:40 AM 0.00 M M M M
8/15/2018 4:05 AM 0.00 M M M M
8/16/2018 6:30 AM 1.95 M M M M
8/17/2018 6:35 AM 0.26 M M M M
8/18/2018 7:03 AM 0.15 M M M M
8/19/2018 7:24 AM 0.00 M M M M
8/20/2018 6:45 AM 0.00 M M M M
8/21/2018 6:03 AM 1.06 M M M M
8/22/2018 6:30 AM 0.03 M M M M
8/23/2018 5:49 AM 0.00 M M M M
8/24/2018 6:36 AM 0.00 M M M M
8/25/2018 7:23 AM 1.43 M M M M
8/26/2018 6:55 AM 0.00 M M M M
8/27/2018 6:25 AM 0.00 M M M M
8/28/2018 5:58 AM 0.00 M M M M
8/29/2018 6:35 AM 2.99 M M M M
8/30/2018 6:36 AM 0.01 M M M M
8/31/2018 6:45 AM 0.00 M M M M
9/1/2018 6:07 AM 0.00 M M M M
9/2/2018 6:38 AM 0.94 M M M M
9/3/2018 7:53 AM 1.37 M M M M
9/4/2018 6:40 AM 0.12 M M M M
9/8/2018 7:45 AM M M M M M It appears a squirrel, in its attempt to place a cracker on top of my rain gauge, knocked it over. Whatever precipitation we had since yesterday morning was dumped by the critter.
9/9/2018 7:12 AM 0.00 M M M M
9/10/2018 6:38 AM 0.00 M M M M
9/11/2018 6:30 AM 0.00 M M M M
9/12/2018 5:25 AM 0.00 M M M M
9/13/2018 6:40 AM 0.00 M M M M
9/14/2018 6:32 AM 0.00 M M M M
9/15/2018 6:13 AM 0.00 M M M M
9/16/2018 7:45 AM 0.00 M M M M
9/17/2018 5:40 AM 0.00 M M M M
9/18/2018 4:35 AM 0.00 M M M M
9/19/2018 6:08 AM T M M M M
9/20/2018 6:21 AM 0.07 M M M M
9/21/2018 7:58 AM 0.01 M M M M
9/22/2018 7:29 AM 0.00 M M M M
9/23/2018 7:04 AM 0.00 M M M M
9/24/2018 6:34 AM 0.00 M M M M
9/25/2018 6:37 AM T M M M M
9/26/2018 6:40 AM 0.21 M M M M
9/27/2018 6:37 AM 0.00 M M M M
9/28/2018 8:00 AM 0.00 0.0 M M M
9/29/2018 7:05 AM 0.10 M M M M No frost here.
9/30/2018 7:11 AM 0.06 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
8/11/2018 8/13/2018 6:40 AM 3 0.00 M M
9/5/2018 9/07/2018 7:39 AM 3 0.52 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