Viewing Station: IL-CK-163 : Arlington Heights 1.2 SW
Mar 28, 2010 - Mar 27, 20263,360 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.28"
March 1-27, 2026(8 of 27 days covered by obs)
NOAA Normal
1.98"
Departure from Normal
-1.70" : 14% of Normal
Year-To-Date: 0.28"
Jan 1 to Mar 27, 2026(8 of 86 days covered by obs)
NOAA Normal
5.64"
Departure from Normal
-5.36" : 5% of Normal
Water Year-To-Date: 5.35"
Oct 1, 2025 to Mar 27, 2026(69 of 178 days covered by obs)
NOAA Normal
13.34"
Departure from Normal
-7.99" : 40% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.88
1.98
-0.10
Feb
1.78
1.90
-0.12
Mar
2.27
2.23
0.04
Apr
3.76
3.70
0.06
May
4.52
4.56
-0.04
Jun
4.61
4.28
0.33
Jul
3.84
3.62
0.22
Aug
3.85
3.97
-0.12
Sep
3.36
3.25
0.11
Oct
3.21
3.24
-0.03
Nov
2.41
2.38
0.03
Dec
2.08
2.11
-0.03
37.57
37.22
0.35