Illinois · county areal climate 1951–2025

Union County, IL

A 48.6" / 57.2°F normal · 2025 ran 93% of normal precipitation.
2026 so far · through Jul 25: This area is at 72% (21.78") of the 1996–2025 to-date normal — the 12th driest start of 76 years. Temperature +1.7°F vs normal. U.S. year-to-date →

Normal (1996–2025)

48.6in
annual precipitation · 57.2°F

2025 vs Normal

93%
45.4" · 57.3°F (+0.1 vs normal)

Wettest Year

70.0in
2011

Driest Year

29.7in
1953

Biggest Rain Day

6.33in
Mar 19 · 2008

Warmest Year

59.8°F
2012

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

34°
J
38°
F
47°
M
57°
A
67°
M
75°
J
78°
J
77°
A
70°
S
59°
O
46°
N
38°
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.

Nearby

← All Illinois countiesU.S. overview
DriestSince · browse by state · precipitation & snowfall records · NOAA/RCC-ACIS ThreadEx gauge record · part of Weather Trader · supported by Substack Subscribers
© 2026 Weather Trader · All rights reserved