Viewing Station: IL-DP-78 : Naperville 2.4 SE
Sep 1, 2009 - Jul 8, 20264,225 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.42"
July 1-8, 2026(8 of 8 days covered by obs)
NOAA Normal
1.00"
Departure from Normal
3.42" : 441% of Normal
Year-To-Date: 26.50"
Jan 1 to Jul 8, 2026(189 of 189 days covered by obs)
NOAA Normal
20.10"
Departure from Normal
6.40" : 132% of Normal
Water Year-To-Date: 33.16"
Oct 1, 2025 to Jul 8, 2026(280 of 281 days covered by obs)
NOAA Normal
28.35"
Departure from Normal
4.81" : 117% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.05
-0.03
Feb
1.81
1.90
-0.09
Mar
2.37
2.33
0.04
Apr
3.89
3.86
0.03
May
4.56
4.68
-0.12
Jun
4.45
4.41
0.04
Jul
3.88
3.93
-0.05
Aug
4.07
3.94
0.13
Sep
3.25
3.23
0.02
Oct
3.48
3.48
0.00
Nov
2.61
2.56
0.05
Dec
2.16
2.14
0.02
38.55
38.51
0.04