Viewing Station: IL-WL-103 : Joliet 1.8 NNE
May 18, 2012 - May 16, 20251,157 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.48"
May 1-18, 2025(16 of 18 days covered by obs)
NOAA Normal
2.61"
Departure from Normal
-2.13" : 18% of Normal
Year-To-Date: 10.12"
Jan 1 to May 18, 2025(136 of 138 days covered by obs)
NOAA Normal
12.59"
Departure from Normal
-2.47" : 80% of Normal
Water Year-To-Date: 16.26"
Oct 1, 2024 to May 18, 2025(228 of 230 days covered by obs)
NOAA Normal
20.65"
Departure from Normal
-4.39" : 79% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.04
2.06
-0.02
Feb
1.79
1.88
-0.09
Mar
2.34
2.40
-0.06
Apr
3.81
3.85
-0.04
May
4.50
4.64
-0.14
Jun
4.42
4.49
-0.07
Jul
4.14
4.21
-0.07
Aug
4.00
3.97
0.03
Sep
3.32
3.28
0.04
Oct
3.34
3.32
0.02
Nov
2.60
2.47
0.13
Dec
2.12
2.11
0.01
38.42
38.68
-0.26