Colorado · county areal climate 1951–2025
Jefferson County, CO
A 47.0°F / 18.4" normal · 2025 ran +1.4°F vs normal.
2026 so far · through Jul 9: This area is running
+4.5°F (48.1°F) vs the 1996–2025 to-date normal — the
1st warmest start of 76 years. Precipitation
62% of normal.
U.S. year-to-date → Normal (1996–2025)
47.0°F
annual mean · 18.4" precipitation
2025 vs Normal
+1.4°F
48.4°F · 16.1" (88% of normal)
Warmest Year
48.7°F
2012 · coldest 44.0°F (1951)
Wettest Year
25.7in
1969 · driest 11.8" (1962)
Hottest Day
95.1°F
Jun 26 · 2012
Coldest Day
-30.7°F
Feb 1 · 1951
Biggest Rain Day
2.89in
May 7 · 1969
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.