Illinois · county areal climate 1951–2025

Cass County, IL

A 37.6" / 53.3°F normal · 2025 ran 73% of normal precipitation.
2026 so far · through Jul 25: This area is at 116% (26.45") of the 1996–2025 to-date normal — the 21st wettest start of 76 years. Temperature +2.1°F vs normal. U.S. year-to-date →

Normal (1996–2025)

37.6in
annual precipitation · 53.3°F

2025 vs Normal

73%
27.4" · 54.1°F (+0.8 vs normal)

Wettest Year

55.6in
1993

Driest Year

25.1in
1989

Biggest Rain Day

3.75in
Sep 10 · 2014

Warmest Year

56.0°F
2012

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

27°
J
31°
F
42°
M
53°
A
64°
M
73°
J
76°
J
74°
A
68°
S
56°
O
43°
N
32°
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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