Viewing Station: IL-WL-92 : Naperville 4.0 SSW
Mar 20, 2012 - Dec 15, 20254,772 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.59"
December 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.03"
Departure from Normal
-0.44" : 58% of Normal
Year-To-Date: 35.57"
Jan 1 to Dec 15, 2025(349 of 349 days covered by obs)
NOAA Normal
37.03"
Departure from Normal
-1.46" : 96% of Normal
Water Year-To-Date: 4.36"
Oct 1, 2025 to Dec 15, 2025(76 of 76 days covered by obs)
NOAA Normal
7.00"
Departure from Normal
-2.64" : 62% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.00
1.98
0.02
Feb
1.75
1.83
-0.08
Mar
2.30
2.30
0.00
Apr
3.84
3.79
0.05
May
4.51
4.62
-0.11
Jun
4.44
4.37
0.07
Jul
4.00
3.96
0.04
Aug
4.01
3.87
0.14
Sep
3.18
3.22
-0.04
Oct
3.38
3.39
-0.01
Nov
2.59
2.47
0.12
Dec
2.12
2.07
0.05
38.12
37.87
0.25