Viewing Station: IL-MD-20 : Edwardsville 0.9 WSW
May 8, 2009 - Dec 15, 20254,900 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.35"
December 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
1.28"
Departure from Normal
-0.93" : 27% of Normal
Year-To-Date: 43.47"
Jan 1 to Dec 15, 2025(347 of 349 days covered by obs)
NOAA Normal
40.88"
Departure from Normal
2.59" : 106% of Normal
Water Year-To-Date: 6.66"
Oct 1, 2025 to Dec 15, 2025(75 of 76 days covered by obs)
NOAA Normal
8.02"
Departure from Normal
-1.36" : 83% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.53
2.63
-0.10
Feb
2.25
2.37
-0.12
Mar
3.36
3.45
-0.09
Apr
4.73
4.88
-0.15
May
4.97
5.14
-0.17
Jun
4.18
4.67
-0.49
Jul
4.24
4.38
-0.14
Aug
3.32
3.79
-0.47
Sep
3.28
3.07
0.21
Oct
3.24
3.29
-0.05
Nov
3.50
3.46
0.04
Dec
2.64
2.64
0.00
42.24
43.77
-1.53