Iowa · county areal climate 1951–2025
Marion County, IA
A 50.8°F / 35.7" normal · 2025 ran +1°F vs normal.
2026 so far · through Aug 29: This area is running
+2.9°F (55.5°F) vs the 1996–2025 to-date normal — the
3rd warmest start of 76 years. Precipitation
114% of normal.
U.S. year-to-date → Normal (1996–2025)
50.8°F
annual mean · 35.7" precipitation
2025 vs Normal
+1°F
51.8°F · 31.7" (89% of normal)
Warmest Year
54.2°F
2012 · coldest 46.9°F (1951)
Wettest Year
54.7in
2010 · driest 19.4" (1956)
Hottest Day
105.3°F
Jul 24 · 2012
Coldest Day
-27.3°F
Feb 3 · 1996
Biggest Rain Day
4.49in
Nov 17 · 1952
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.