Illinois · county areal climate 1951–2025
Brown County, IL
A 53.2°F / 37.5" normal · 2025 ran +0.8°F vs normal.
2026 so far · through Jul 10: This area is running
+2.5°F (52.2°F) vs the 1996–2025 to-date normal — the
6th warmest start of 76 years. Precipitation
113% of normal.
U.S. year-to-date → Normal (1996–2025)
53.2°F
annual mean · 37.5" precipitation
2025 vs Normal
+0.8°F
54.0°F · 29.6" (79% of normal)
Warmest Year
55.8°F
2012 · coldest 49.8°F (1978)
Wettest Year
55.5in
1973 · driest 21.8" (1953)
Hottest Day
107.1°F
Jul 14 · 1954
Coldest Day
-20.6°F
Jan 20 · 1985
Biggest Rain Day
4.91in
Sep 10 · 2014
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.