Illinois · county areal climate 1951–2025
Lake County, IL
A 49.3°F / 36.4" normal · 2025 ran +0.8°F vs normal.
2026 so far · through Jul 10: This area is running
+1.9°F (46.8°F) vs the 1996–2025 to-date normal — the
9th warmest start of 76 years. Precipitation
117% of normal.
U.S. year-to-date → Normal (1996–2025)
49.3°F
annual mean · 36.4" precipitation
2025 vs Normal
+0.8°F
50.1°F · 28.3" (78% of normal)
Warmest Year
52.7°F
2024 · coldest 45.3°F (1951)
Wettest Year
50.4in
2019 · driest 23.6" (1956)
Hottest Day
102.7°F
Jul 14 · 1995
Coldest Day
-24.0°F
Jan 31 · 2019
Biggest Rain Day
3.57in
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.