Illinois · county areal climate 1951–2025
Rock Island County, IL
A 50.8°F / 37.0" normal · 2025 ran +1°F vs normal.
2026 so far · through Aug 29: This area is running
+2.1°F (54.7°F) vs the 1996–2025 to-date normal — the
6th warmest start of 76 years. Precipitation
106% of normal.
U.S. year-to-date → Normal (1996–2025)
50.8°F
annual mean · 37.0" precipitation
2025 vs Normal
+1°F
51.8°F · 32.6" (88% of normal)
Warmest Year
53.7°F
2024 · coldest 47.1°F (2014)
Wettest Year
50.8in
2009 · driest 20.0" (2005)
Hottest Day
101.4°F
Aug 18 · 1988
Coldest Day
-28.8°F
Jan 31 · 2019
Biggest Rain Day
3.97in
Jun 17 · 1990
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.