Illinois · county areal climate 1951–2025
Clinton County, IL
A 55.9°F / 43.2" normal · 2025 ran +0.8°F vs normal.
2026 so far · through Jul 9: This area is running
+2.2°F (54.8°F) vs the 1996–2025 to-date normal — the
5th warmest start of 76 years. Precipitation
92% of normal.
U.S. year-to-date → Normal (1996–2025)
55.9°F
annual mean · 43.2" precipitation
2025 vs Normal
+0.8°F
56.7°F · 40.3" (93% of normal)
Warmest Year
58.6°F
2012 · coldest 52.0°F (1979)
Wettest Year
55.6in
1957 · driest 24.1" (1953)
Hottest Day
107.6°F
Jul 14 · 1954
Coldest Day
-17.1°F
Jan 17 · 1977
Biggest Rain Day
4.2in
Apr 29 · 1996
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.