Wisconsin · county areal climate 1951–2025
Jefferson County, WI
A 47.7°F / 35.8" normal · 2025 ran +0.3°F vs normal.
2026 so far · through Jul 10: This area is running
+1.5°F (45.0°F) vs the 1996–2025 to-date normal — the
13th warmest start of 76 years. Precipitation
103% of normal.
U.S. year-to-date → Normal (1996–2025)
47.7°F
annual mean · 35.8" precipitation
2025 vs Normal
+0.3°F
48.0°F · 31.4" (88% of normal)
Warmest Year
50.9°F
2012 · coldest 43.7°F (1951)
Wettest Year
49.8in
2018 · driest 21.5" (1963)
Hottest Day
103.4°F
Jul 6 · 2012
Coldest Day
-31.8°F
Jan 30 · 1951
Biggest Rain Day
3.9in
Sep 12 · 2022
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.