Viewing Station: MO-SS-43 : O'Fallon 3.9 NNW
Mar 18, 2020 - Jul 18, 20262,254 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.73"
July 1-19, 2026(18 of 19 days covered by obs)
NOAA Normal
2.30"
Departure from Normal
-0.57" : 75% of Normal
Year-To-Date: 25.97"
Jan 1 to Jul 19, 2026(199 of 200 days covered by obs)
NOAA Normal
24.29"
Departure from Normal
1.68" : 107% of Normal
Water Year-To-Date: 31.77"
Oct 1, 2025 to Jul 19, 2026(291 of 292 days covered by obs)
NOAA Normal
33.26"
Departure from Normal
-1.49" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.42
2.46
-0.04
Feb
2.17
2.24
-0.07
Mar
3.42
3.31
0.11
Apr
4.64
4.54
0.10
May
4.88
5.01
-0.13
Jun
4.46
4.44
0.02
Jul
3.76
3.88
-0.12
Aug
3.66
3.49
0.17
Sep
3.33
3.26
0.07
Oct
3.11
3.22
-0.11
Nov
3.34
3.39
-0.05
Dec
2.52
2.60
-0.08
41.71
41.84
-0.13