Historical Weather in Nampa, ID
See 55+ years of weather history for any date in Nampa going back to 1970.
Part of Idaho weather history
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Today in Nampa Weather HistorySee records, averages, and 55+ years of data for today's date
→Monthly Climate Averages
Historical temperature and precipitation averages for Nampa, ID, based on 55+ years of weather data.
Warmest MonthJulyAvg High: 92°F / Low: 58°F
Coldest MonthJanuaryAvg High: 37°F / Low: 22°F
Jan
37°/ 22°
💧 3.5"
❄️ 1.5"
Feb
46°/ 26°
💧 3.1"
❄️ 1.3"
Mar
57°/ 32°
💧 3.3"
❄️ 0.7"
Apr
65°/ 37°
💧 3.4"
❄️ 0.3"
May
74°/ 45°
💧 3.9"
Jun
83°/ 52°
💧 3.5"
Jul
92°/ 58°
💧 3.3"
Aug
91°/ 55°
💧 3.2"
Sep
80°/ 46°
💧 4.1"
Oct
67°/ 37°
💧 3.6"
❄️ 1.0"
Nov
49°/ 29°
💧 3.1"
❄️ 1.6"
Dec
39°/ 22°
💧 3.3"
❄️ 1.4"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Nampa Temperature Records
- Record High: The hottest temperature ever recorded in Nampa, ID is 112°F, set on July 23, 2003.
- Record Low: The coldest temperature ever recorded in Nampa, ID is -25°F, set on December 22, 1990.
- Data Coverage: Based on 57 years of data from NOAA weather station: EMMETT 2 E.
All-Time Record High
112°F
July 23, 2003
All-Time Record Low
-25°F
December 22, 1990
Monthly Temperature Records in Nampa
| Month | Record High | Record Low |
|---|---|---|
| January | 66°F(2024) | -18°F(1979) |
| February | 71°F(1992) | -16°F(1979) |
| March | 82°F(1978) | 6°F(1971) |
| April | 94°F(1977) | 13°F(1999) |
| May | 100°F(2025) | 21°F(2002) |
| June | 110°F(2015) | 27°F(2002) |
| July | 112°F(2003) | 35°F(1999) |
| August | 110°F(2018) | 32°F(1999) |
| September | 104°F(1998) | 19°F(1999) |
| October | 95°F(1992) | 6°F(2002) |
| November | 82°F(2006) | -10°F(1985) |
| December | 66°F(2003) | -25°F(1990) |
Nampa Snow RecordsSee the top 10 snowiest days ever recorded
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