South Dakota · county areal climate 1951–2025
Day County, SD
A 42.8°F / 23.4" normal · 2025 ran +1°F vs normal.
2026 so far · through Jul 10: This area is running
+1.9°F (40.1°F) vs the 1996–2025 to-date normal — the
17th warmest start of 76 years. Precipitation
83% of normal.
U.S. year-to-date → Normal (1996–2025)
42.8°F
annual mean · 23.4" precipitation
2025 vs Normal
+1°F
43.8°F · 27.9" (119% of normal)
Warmest Year
46.4°F
1987 · coldest 37.6°F (1951)
Wettest Year
34.2in
2019 · driest 8.2" (1976)
Hottest Day
103.1°F
Jul 16 · 2006
Coldest Day
-38.8°F
Feb 9 · 1994
Biggest Rain Day
3.85in
Jul 7 · 1994
Record
1951–2025
75 complete years · NOAA nClimGrid
—— 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.