Tennessee · county areal climate 1951–2025
Jefferson County, TN
A 58.8°F / 48.3" normal · 2025 ran +0.7°F vs normal.
2026 so far · through Jul 9: This area is running
+1.9°F (57.8°F) vs the 1996–2025 to-date normal — the
3rd warmest start of 76 years. Precipitation
93% of normal.
U.S. year-to-date → Normal (1996–2025)
58.8°F
annual mean · 48.3" precipitation
2025 vs Normal
+0.7°F
59.5°F · 46.4" (96% of normal)
Warmest Year
60.4°F
2019 · coldest 54.8°F (1976)
Wettest Year
64.6in
2020 · driest 30.0" (2007)
Hottest Day
103.8°F
Jul 1 · 2012
Coldest Day
-15.5°F
Jan 21 · 1985
Biggest Rain Day
4.2in
Mar 12 · 1963
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.