Viewing Station: IL-WL-137 : Naperville 2.8 SSW
May 8, 2017 - Nov 20, 20252,901 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.99"
November 1-20, 2025(20 of 20 days covered by obs)
NOAA Normal
1.73"
Departure from Normal
-0.74" : 57% of Normal
Year-To-Date: 32.70"
Jan 1 to Nov 20, 2025(321 of 324 days covered by obs)
NOAA Normal
35.18"
Departure from Normal
-2.48" : 93% of Normal
Water Year-To-Date: 2.83"
Oct 1, 2025 to Nov 20, 2025(51 of 51 days covered by obs)
NOAA Normal
5.17"
Departure from Normal
-2.34" : 55% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.97
1.96
0.01
Feb
1.76
1.83
-0.07
Mar
2.30
2.29
0.01
Apr
3.86
3.78
0.08
May
4.55
4.63
-0.08
Jun
4.43
4.36
0.07
Jul
3.93
3.93
0.00
Aug
4.01
3.86
0.15
Sep
3.20
3.21
-0.01
Oct
3.44
3.40
0.04
Nov
2.59
2.47
0.12
Dec
2.13
2.06
0.07
38.17
37.78
0.39