Historical Weather Records & Monthly Climate for St. Peters, MO

All-Time High
113°F
All-Time Low
-27°F
Max Daily Snow
9.5"
Max Wind Gust
64 mph

Monthly Climate Averages

Based on 30 years of historical data (1994 - 2023)

MonthHigh (°F)Low (°F)Precip (in)Snow (in)
January67°55°2.16"0
February69°58°1.75"0
March73°61°2.12"0
April78°66°2.11"0
May83°72°2.4"0
June85°76°5.97"0
July86°78°6"0
August86°78°6.22"0
September85°76°5.61"0
October81°71°2.19"0
November75°64°1.82"0
December70°59°2.38"0

Historical Weather Extremes

Based on 80+ years of archive data (1940 - 2024)

🔥
Longest Heatwave
23 Days
2012
Consecutive days ≥ 90°F
🧊
Deepest Freeze
17 Days
2001
Consecutive days ≤ 32°F
🏜️
Longest Drought
28 Days
1944
Consecutive days w/o rain
Wettest Month
14.28"
July 2020
Most rainfall in one month
Snowiest Month
17.67"
March 1960
Most snowfall in one month

More Historical Climate Data for Cities in


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