Montana · county areal climate 1951–2025
Lewis and Clark County, MT
A 41.6°F / 21.8" normal · 2025 ran +1.3°F vs normal.
2026 so far · through Jul 9: This area is running
+2.8°F (40.8°F) vs the 1996–2025 to-date normal — the
5th warmest start of 76 years. Precipitation
101% of normal.
U.S. year-to-date → Normal (1996–2025)
41.6°F
annual mean · 21.8" precipitation
2025 vs Normal
+1.3°F
42.9°F · 22.2" (102% of normal)
Warmest Year
43.8°F
2015 · coldest 36.0°F (1951)
Wettest Year
37.6in
1975 · driest 14.0" (1960)
Hottest Day
96.5°F
Jul 13 · 2002
Coldest Day
-38.1°F
Jan 14 · 2024
Biggest Rain Day
2.4in
Apr 30 · 1951
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.