Historical Weather in Boise, ID
See 55+ years of weather history for any date in Boise going back to 1970.
Part of Idaho weather history
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Today in Boise Weather HistorySee records, averages, and 55+ years of data for today's date
→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.
Boise Temperature Records
- Record High: The hottest temperature ever recorded in Boise, ID is 113°F, set on July 12, 2002.
- Record Low: The coldest temperature ever recorded in Boise, ID is -25°F, set on December 22, 1990.
- Data Coverage: Based on 57 years of data from NOAA weather station: BOISE AIR TERMINAL.
All-Time Record High
113°F
July 12, 2002
All-Time Record Low
-25°F
December 22, 1990
Monthly Temperature Records in Boise
| Month | Record High | Record Low |
|---|---|---|
| January | 66°F(2024) | -14°F(1977) |
| February | 72°F(1977) | -17°F(1989) |
| March | 81°F(2025) | 2°F(2022) |
| April | 93°F(1987) | 13°F(2011) |
| May | 103°F(2003) | 18°F(2022) |
| June | 110°F(2015) | 26°F(2002) |
| July | 113°F(2002) | 33°F(2000) |
| August | 110°F(2018) | 33°F(2010) |
| September | 105°F(2007) | 23°F(1970) |
| October | 95°F(1992) | 5°F(2002) |
| November | 80°F(1988) | -9°F(2010) |
| December | 65°F(1987) | -25°F(1990) |
Boise Snow RecordsSee the top 10 snowiest days ever recorded
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