Viewing Station: MO-SS-48 : St. Peters 4.5 W
Apr 8, 2021 - Aug 20, 20261,309 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.04"
August 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.34"
Departure from Normal
0.70" : 130% of Normal
Year-To-Date: 30.94"
Jan 1 to Aug 20, 2026(228 of 232 days covered by obs)
NOAA Normal
28.35"
Departure from Normal
2.59" : 109% of Normal
Water Year-To-Date: 35.50"
Oct 1, 2025 to Aug 20, 2026(319 of 324 days covered by obs)
NOAA Normal
37.49"
Departure from Normal
-1.99" : 95% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.48
2.55
-0.07
Feb
2.22
2.35
-0.13
Mar
3.52
3.50
0.02
Apr
4.70
4.72
-0.02
May
4.96
5.06
-0.10
Jun
4.43
4.47
-0.04
Jul
3.70
3.89
-0.19
Aug
3.63
3.55
0.08
Sep
3.31
3.24
0.07
Oct
3.16
3.23
-0.07
Nov
3.41
3.47
-0.06
Dec
2.57
2.71
-0.14
42.09
42.74
-0.65