Viewing Station: IL-DP-202 : Oak Brook 1.5 N
Jul 9, 2025 - Sep 17, 202537 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.35"
September 1-17, 2025(11 of 17 days covered by obs)
NOAA Normal
1.84"
Departure from Normal
-1.49" : 19% of Normal
Year-To-Date: 3.11"
Jan 1 to Sep 17, 2025(34 of 260 days covered by obs)
NOAA Normal
28.47"
Departure from Normal
-25.36" : 11% of Normal
Water Year-To-Date: 3.11"
Oct 1, 2024 to Sep 17, 2025(34 of 352 days covered by obs)
NOAA Normal
36.54"
Departure from Normal
-33.43" : 9% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.95
2.13
-0.18
Feb
1.82
2.01
-0.19
Mar
2.35
2.31
0.04
Apr
3.81
3.87
-0.06
May
4.63
4.67
-0.04
Jun
4.39
4.40
-0.01
Jul
3.71
3.76
-0.05
Aug
3.97
4.07
-0.10
Sep
3.25
3.26
-0.01
Oct
3.45
3.48
-0.03
Nov
2.51
2.65
-0.14
Dec
2.11
2.23
-0.12
37.95
38.84
-0.89