Illinois · county areal climate 1951–2025

Lake County, IL

A 36.4" / 49.3°F normal · 2025 ran 78% of normal precipitation.
2026 so far · through Jul 25: This area is at 105% (22.6") of the 1996–2025 to-date normal — the 23rd wettest start of 76 years. Temperature +1.8°F vs normal. U.S. year-to-date →

Normal (1996–2025)

36.4in
annual precipitation · 49.3°F

2025 vs Normal

78%
28.3" · 50.1°F (+0.8 vs normal)

Wettest Year

50.4in
2019

Driest Year

23.6in
1956

Biggest Rain Day

3.57in
Apr 18 · 2013

Warmest Year

52.7°F
2024

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

23°
J
27°
F
37°
M
47°
A
58°
M
68°
J
73°
J
71°
A
65°
S
52°
O
40°
N
29°
D
—— 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.

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