Iowa · county areal climate 1951–2025
O'Brien County, IA
A 46.7°F / 30.2" normal · 2025 ran +1.5°F vs normal.
2026 so far · through Jul 9: This area is running
+3.3°F (45.9°F) vs the 1996–2025 to-date normal — the
3rd warmest start of 76 years. Precipitation
82% of normal.
U.S. year-to-date → Normal (1996–2025)
46.7°F
annual mean · 30.2" precipitation
2025 vs Normal
+1.5°F
48.2°F · 30.6" (101% of normal)
Warmest Year
50.3°F
2012 · coldest 42.0°F (1951)
Wettest Year
47.4in
2018 · driest 14.7" (1958)
Hottest Day
102.4°F
Jun 22 · 1988
Coldest Day
-30.8°F
Jan 19 · 1970
Biggest Rain Day
4.76in
Sep 15 · 2004
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.