Viewing Station: IL-WL-137 : Naperville 2.8 SSW
May 8, 2017 - Dec 14, 20252,925 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.74"
December 1-14, 2025(14 of 14 days covered by obs)
NOAA Normal
0.96"
Departure from Normal
-0.22" : 77% of Normal
Year-To-Date: 34.46"
Jan 1 to Dec 14, 2025(345 of 348 days covered by obs)
NOAA Normal
37.00"
Departure from Normal
-2.54" : 93% of Normal
Water Year-To-Date: 4.59"
Oct 1, 2025 to Dec 14, 2025(75 of 75 days covered by obs)
NOAA Normal
6.99"
Departure from Normal
-2.40" : 66% 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