South Dakota · county areal climate 1951–2025

Union County, SD

A 27.8" / 48.2°F normal · 2025 ran 100% of normal precipitation.
2026 so far · through Jul 25: This area is at 63% (10.55") of the 1996–2025 to-date normal — the 7th driest start of 76 years. Temperature +3.2°F vs normal. U.S. year-to-date →

Normal (1996–2025)

27.8in
annual precipitation · 48.2°F

2025 vs Normal

100%
27.9" · 49.6°F (+1.4 vs normal)

Wettest Year

39.3in
2018

Driest Year

13.5in
1976

Biggest Rain Day

3.85in
Jul 22 · 2010

Warmest Year

52.1°F
2012

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

19°
J
23°
F
36°
M
48°
A
60°
M
70°
J
74°
J
72°
A
64°
S
51°
O
36°
N
24°
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

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