Idaho · county areal climate 1951–2025
Custer County, ID
A 38.9°F / 21.8" normal · 2025 ran +2°F vs normal.
2026 so far · through Jul 9: This area is running
+3.5°F (38.8°F) vs the 1996–2025 to-date normal — the
3rd warmest start of 76 years. Precipitation
80% of normal.
U.S. year-to-date → Normal (1996–2025)
38.9°F
annual mean · 21.8" precipitation
2025 vs Normal
+2°F
40.9°F · 25.3" (116% of normal)
Warmest Year
41.0°F
2015 · coldest 35.1°F (1964)
Wettest Year
32.2in
1995 · driest 14.9" (1966)
Hottest Day
93.3°F
Jul 13 · 2002
Coldest Day
-36.5°F
Feb 1 · 1956
Biggest Rain Day
2.53in
Dec 22 · 1964
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.