Viewing Station: IL-WL-175 : Joliet 0.7 WNW
Jul 8, 2021 - May 27, 20261,779 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.47"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
3.98"
Departure from Normal
-1.51" : 62% of Normal
Year-To-Date: 17.67"
Jan 1 to May 27, 2026(146 of 147 days covered by obs)
NOAA Normal
13.90"
Departure from Normal
3.77" : 127% of Normal
Water Year-To-Date: 23.69"
Oct 1, 2025 to May 27, 2026(238 of 239 days covered by obs)
NOAA Normal
21.87"
Departure from Normal
1.82" : 108% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.02
2.04
-0.02
Feb
1.76
1.87
-0.11
Mar
2.35
2.36
-0.01
Apr
3.79
3.83
-0.04
May
4.57
4.61
-0.04
Jun
4.41
4.45
-0.04
Jul
4.16
4.20
-0.04
Aug
3.97
3.93
0.04
Sep
3.27
3.28
-0.01
Oct
3.30
3.28
0.02
Nov
2.57
2.47
0.10
Dec
2.10
2.10
0.00
38.27
38.42
-0.15