Historical Weather in Idaho
See 55+ years of weather history for any date in Idaho going back to 1970.
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Monthly Climate Averages
Historical temperature and precipitation averages for Boise, ID, based on 55+ years of weather data.
Warmest MonthJulyAvg High: 92°F / Low: 60°F
Coldest MonthJanuaryAvg High: 38°F / Low: 24°F
Jan
38°/ 24°
💧 3.2"
❄️ 1.0"
Feb
45°/ 28°
💧 3.0"
❄️ 0.9"
Mar
55°/ 34°
💧 3.5"
❄️ 0.8"
Apr
62°/ 38°
💧 3.7"
❄️ 0.6"
May
71°/ 46°
💧 4.3"
❄️ 0.7"
Jun
82°/ 53°
💧 3.6"
Jul
92°/ 60°
💧 3.0"
Aug
90°/ 59°
💧 2.9"
Sep
79°/ 51°
💧 3.8"
Oct
65°/ 40°
💧 3.6"
❄️ 0.9"
Nov
49°/ 31°
💧 3.2"
❄️ 1.0"
Dec
39°/ 24°
💧 3.3"
❄️ 1.1"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Climate data based on Boise, the largest city in Idaho.
Idaho All-Time Temperature RecordsSee the hottest and coldest days ever recorded since 1970
→Today's Weather History in Idaho
See how today compares to 55+ years of weather data for Idaho cities.