Illinois · county areal climate 1951–2025
Whiteside County, IL
A 50.2°F / 37.3" normal · 2025 ran +1.1°F vs normal.
2026 so far · through Jul 9: This area is running
+2.7°F (49.0°F) vs the 1996–2025 to-date normal — the
6th warmest start of 76 years. Precipitation
98% of normal.
U.S. year-to-date → Normal (1996–2025)
50.2°F
annual mean · 37.3" precipitation
2025 vs Normal
+1.1°F
51.3°F · 31.8" (85% of normal)
Warmest Year
53.2°F
2024 · coldest 46.1°F (1951)
Wettest Year
52.4in
2019 · driest 22.9" (2005)
Hottest Day
101.4°F
Aug 18 · 1988
Coldest Day
-29.0°F
Jan 31 · 2019
Biggest Rain Day
4.2in
Apr 18 · 2013
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.