Viewing Station: IL-DP-49 : Naperville 2.5 ESE
Oct 18, 2007 - Jul 28, 2025771 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.55"
July 1-29, 2025(9 of 29 days covered by obs)
NOAA Normal
3.63"
Departure from Normal
0.92" : 125% of Normal
Year-To-Date: 12.29"
Jan 1 to Jul 29, 2025(33 of 210 days covered by obs)
NOAA Normal
22.73"
Departure from Normal
-10.44" : 54% of Normal
Water Year-To-Date: 18.28"
Oct 1, 2024 to Jul 29, 2025(61 of 302 days covered by obs)
NOAA Normal
30.98"
Departure from Normal
-12.70" : 59% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.06
-0.04
Feb
1.81
1.92
-0.11
Mar
2.37
2.34
0.03
Apr
3.89
3.87
0.02
May
4.56
4.68
-0.12
Jun
4.45
4.42
0.03
Jul
3.88
3.92
-0.04
Aug
4.07
3.96
0.11
Sep
3.25
3.23
0.02
Oct
3.48
3.50
-0.02
Nov
2.61
2.58
0.03
Dec
2.16
2.15
0.01
38.55
38.63
-0.08