Montana · county areal climate 1951–2025
Custer County, MT
A 45.8°F / 14.3" normal · 2025 ran +1.1°F vs normal.
2026 so far · through Jul 9: This area is running
+3.8°F (45.5°F) vs the 1996–2025 to-date normal — the
6th warmest start of 76 years. Precipitation
71% of normal.
U.S. year-to-date → Normal (1996–2025)
45.8°F
annual mean · 14.3" precipitation
2025 vs Normal
+1.1°F
46.9°F · 17.1" (119% of normal)
Warmest Year
48.5°F
2012 · coldest 40.4°F (1951)
Wettest Year
20.7in
2011 · driest 6.5" (1988)
Hottest Day
109.5°F
Jul 15 · 2002
Coldest Day
-38.7°F
Dec 22 · 1989
Biggest Rain Day
2.32in
Oct 2 · 1971
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.