Iowa · county areal climate 1951–2025
Clayton County, IA
A 47.2°F / 37.6" normal · 2025 ran +0.9°F vs normal.
2026 so far · through Jul 9: This area is running
+1.9°F (44.8°F) vs the 1996–2025 to-date normal — the
10th warmest start of 76 years. Precipitation
121% of normal.
U.S. year-to-date → Normal (1996–2025)
47.2°F
annual mean · 37.6" precipitation
2025 vs Normal
+0.9°F
48.1°F · 34.7" (92% of normal)
Warmest Year
50.4°F
2012 · coldest 42.8°F (1951)
Wettest Year
53.1in
2018 · driest 21.6" (1988)
Hottest Day
102.3°F
Aug 1 · 1988
Coldest Day
-33.3°F
Feb 4 · 1996
Biggest Rain Day
4.65in
Jul 22 · 2017
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.