Viewing Station: IL-WL-166 : Naperville 3.6 SE
Jul 1, 2020 - Mar 27, 20261,846 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.34"
March 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
2.06"
Departure from Normal
2.28" : 210% of Normal
Year-To-Date: 6.34"
Jan 1 to Mar 27, 2026(85 of 86 days covered by obs)
NOAA Normal
5.89"
Departure from Normal
0.45" : 108% of Normal
Water Year-To-Date: 13.33"
Oct 1, 2025 to Mar 27, 2026(177 of 178 days covered by obs)
NOAA Normal
14.14"
Departure from Normal
-0.81" : 94% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.06
-0.04
Feb
1.81
1.91
-0.10
Mar
2.37
2.35
0.02
Apr
3.89
3.86
0.03
May
4.56
4.67
-0.11
Jun
4.45
4.43
0.02
Jul
3.88
3.96
-0.08
Aug
4.07
3.95
0.12
Sep
3.25
3.23
0.02
Oct
3.48
3.47
0.01
Nov
2.61
2.55
0.06
Dec
2.16
2.14
0.02
38.55
38.58
-0.03