Missouri · county areal climate 1951–2025
St. Clair County, MO
A 56.8°F / 42.8" normal · 2025 ran +0.6°F vs normal.
2026 so far · through Jul 9: This area is running
+2.9°F (56.3°F) vs the 1996–2025 to-date normal — the
2nd warmest start of 76 years. Precipitation
126% of normal.
U.S. year-to-date → Normal (1996–2025)
56.8°F
annual mean · 42.8" precipitation
2025 vs Normal
+0.6°F
57.4°F · 38.4" (90% of normal)
Warmest Year
59.7°F
2012 · coldest 53.6°F (1979)
Wettest Year
62.2in
1951 · driest 23.5" (1980)
Hottest Day
114.4°F
Jul 14 · 1954
Coldest Day
-19.5°F
Dec 23 · 1989
Biggest Rain Day
4.67in
Oct 3 · 1986
Record
1951–2025
75 complete years · NOAA nClimGrid
—— normal temperature (°F) · ▮ normal precipitation (in) · 1996–2025
Areal
nClimGrid averages (NOAA/NCEI) over the whole area — an average across the region, not a single station. Separate from the
station records.