South Dakota · county areal climate 1951–2025

Sully County, SD

A 18.9" / 45.8°F normal · 2025 ran 110% of normal precipitation.
2026 so far · through Jul 25: This area is at 71% (8.31") of the 1996–2025 to-date normal — the 10th driest start of 76 years. Temperature +3.3°F vs normal. U.S. year-to-date →

Normal (1996–2025)

18.9in
annual precipitation · 45.8°F

2025 vs Normal

110%
20.8" · 46.9°F (+1.1 vs normal)

Wettest Year

28.5in
2019

Driest Year

7.8in
1976

Biggest Rain Day

2.86in
Aug 25 · 1960

Warmest Year

48.9°F
2012

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

17°
J
21°
F
33°
M
44°
A
56°
M
67°
J
74°
J
71°
A
63°
S
48°
O
34°
N
21°
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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