Idaho · county areal climate 1951–2025
Jefferson County, ID
A 43.9°F / 9.3" normal · 2025 ran +2.3°F vs normal.
2026 so far · through Jul 10: This area is running
+4.5°F (45.0°F) vs the 1996–2025 to-date normal — the
2nd warmest start of 76 years. Precipitation
66% of normal.
U.S. year-to-date → Normal (1996–2025)
43.9°F
annual mean · 9.3" precipitation
2025 vs Normal
+2.3°F
46.2°F · 8.5" (91% of normal)
Warmest Year
46.3°F
2015 · coldest 38.4°F (1985)
Wettest Year
15.7in
1983 · driest 5.9" (1953)
Hottest Day
102.3°F
Jul 13 · 2002
Coldest Day
-34.4°F
Dec 23 · 1990
Biggest Rain Day
1.09in
Jul 10 · 1983
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.