Iowa · county areal climate 1951–2025
Johnson County, IA
A 49.7°F / 35.9" normal · 2025 ran +1°F vs normal.
2026 so far · through Jul 9: This area is running
+2.4°F (48.2°F) vs the 1996–2025 to-date normal — the
7th warmest start of 76 years. Precipitation
115% of normal.
U.S. year-to-date → Normal (1996–2025)
49.7°F
annual mean · 35.9" precipitation
2025 vs Normal
+1°F
50.7°F · 28.6" (80% of normal)
Warmest Year
52.9°F
2012 · coldest 45.9°F (2014)
Wettest Year
58.3in
1993 · driest 20.7" (1988)
Hottest Day
104.4°F
Jul 24 · 2012
Coldest Day
-31.7°F
Jan 31 · 2019
Biggest Rain Day
4.2in
Apr 18 · 2013
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.