Iowa · county areal climate 1951–2025
Hamilton County, IA
A 47.9°F / 34.9" normal · 2025 ran +0.9°F vs normal.
2026 so far · through Jul 10: This area is running
+2.9°F (46.9°F) vs the 1996–2025 to-date normal — the
5th warmest start of 76 years. Precipitation
110% of normal.
U.S. year-to-date → Normal (1996–2025)
47.9°F
annual mean · 34.9" precipitation
2025 vs Normal
+0.9°F
48.8°F · 39.9" (114% of normal)
Warmest Year
51.2°F
2012 · coldest 43.5°F (1951)
Wettest Year
54.7in
1993 · driest 20.1" (1988)
Hottest Day
103.8°F
Aug 16 · 1988
Coldest Day
-28.6°F
Feb 3 · 1996
Biggest Rain Day
3.97in
Aug 16 · 1977
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.