Viewing Station: MO-SS-42 : O'Fallon 2.6 NNE
Mar 14, 2020 - Aug 22, 20261,639 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.87"
August 1-25, 2026(17 of 25 days covered by obs)
NOAA Normal
2.93"
Departure from Normal
0.94" : 132% of Normal
Year-To-Date: 30.56"
Jan 1 to Aug 25, 2026(170 of 237 days covered by obs)
NOAA Normal
28.83"
Departure from Normal
1.73" : 106% of Normal
Water Year-To-Date: 33.75"
Oct 1, 2025 to Aug 25, 2026(232 of 329 days covered by obs)
NOAA Normal
37.88"
Departure from Normal
-4.13" : 89% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.45
2.48
-0.03
Feb
2.19
2.27
-0.08
Mar
3.47
3.37
0.10
Apr
4.66
4.60
0.06
May
4.95
5.03
-0.08
Jun
4.45
4.44
0.01
Jul
3.73
3.90
-0.17
Aug
3.63
3.52
0.11
Sep
3.31
3.24
0.07
Oct
3.13
3.22
-0.09
Nov
3.37
3.41
-0.04
Dec
2.55
2.63
-0.08
41.89
42.11
-0.22