Viewing Station: IL-CK-322 : Arlington Heights 0.8 NNW
Mar 24, 2020 - Dec 3, 20251,626 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.15"
December 1-7, 2025(3 of 7 days covered by obs)
NOAA Normal
0.47"
Departure from Normal
-0.32" : 32% of Normal
Year-To-Date: 22.50"
Jan 1 to Dec 7, 2025(321 of 341 days covered by obs)
NOAA Normal
35.80"
Departure from Normal
-13.30" : 63% of Normal
Water Year-To-Date: 4.08"
Oct 1, 2025 to Dec 7, 2025(63 of 68 days covered by obs)
NOAA Normal
6.09"
Departure from Normal
-2.01" : 67% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.87
1.96
-0.09
Feb
1.76
1.90
-0.14
Mar
2.25
2.23
0.02
Apr
3.76
3.69
0.07
May
4.41
4.52
-0.11
Jun
4.59
4.26
0.33
Jul
3.87
3.60
0.27
Aug
3.87
3.92
-0.05
Sep
3.33
3.25
0.08
Oct
3.21
3.23
-0.02
Nov
2.41
2.35
0.06
Dec
2.07
2.09
-0.02
37.40
37.00
0.40