Illinois · county areal climate 1951–2025
Union County, IL
A 57.2°F / 48.6" normal · 2025 ran +0.1°F vs normal.
2026 so far · through Jul 9: This area is running
+1.8°F (56.0°F) vs the 1996–2025 to-date normal — the
6th warmest start of 76 years. Precipitation
66% of normal.
U.S. year-to-date → Normal (1996–2025)
57.2°F
annual mean · 48.6" precipitation
2025 vs Normal
+0.1°F
57.3°F · 45.4" (93% of normal)
Warmest Year
59.8°F
2012 · coldest 53.5°F (1979)
Wettest Year
70.0in
2011 · driest 29.7" (1953)
Hottest Day
106.0°F
Jun 30 · 2012
Coldest Day
-14.7°F
Jan 17 · 1977
Biggest Rain Day
6.33in
Mar 19 · 2008
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.