Illinois · county areal climate 1951–2025
Cass County, IL
A 53.3°F / 37.6" normal · 2025 ran +0.8°F vs normal.
2026 so far · through Jul 9: This area is running
+2.3°F (52.1°F) vs the 1996–2025 to-date normal — the
8th warmest start of 76 years. Precipitation
122% of normal.
U.S. year-to-date → Normal (1996–2025)
53.3°F
annual mean · 37.6" precipitation
2025 vs Normal
+0.8°F
54.1°F · 27.4" (73% of normal)
Warmest Year
56.0°F
2012 · coldest 49.8°F (2014)
Wettest Year
55.6in
1993 · driest 25.1" (1989)
Hottest Day
107.0°F
Jul 14 · 1954
Coldest Day
-20.4°F
Jan 5 · 1999
Biggest Rain Day
3.75in
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.