Illinois · county areal climate 1951–2025
Warren County, IL
A 51.2°F / 37.3" normal · 2025 ran +1.1°F vs normal.
2026 so far · through Jul 9: This area is running
+2.6°F (49.9°F) vs the 1996–2025 to-date normal — the
7th warmest start of 76 years. Precipitation
107% of normal.
U.S. year-to-date → Normal (1996–2025)
51.2°F
annual mean · 37.3" precipitation
2025 vs Normal
+1.1°F
52.3°F · 29.2" (78% of normal)
Warmest Year
54.0°F
2012 · coldest 47.3°F (2014)
Wettest Year
52.2in
2009 · driest 22.9" (1988)
Hottest Day
102.1°F
Jul 24 · 2012
Coldest Day
-22.6°F
Jan 31 · 2019
Biggest Rain Day
4.35in
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.