Illinois · county areal climate 1951–2025
Clay County, IL
A 55.3°F / 46.6" normal · 2025 ran +0.8°F vs normal.
2026 so far · through Jul 9: This area is running
+2.2°F (54.2°F) vs the 1996–2025 to-date normal — the
4th warmest start of 76 years. Precipitation
99% of normal.
U.S. year-to-date → Normal (1996–2025)
55.3°F
annual mean · 46.6" precipitation
2025 vs Normal
+0.8°F
56.1°F · 45.7" (98% of normal)
Warmest Year
57.9°F
2012 · coldest 51.4°F (1979)
Wettest Year
58.5in
1993 · driest 26.5" (1953)
Hottest Day
105.4°F
Jun 29 · 2012
Coldest Day
-20.1°F
Jan 17 · 1977
Biggest Rain Day
4.84in
May 8 · 1961
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.