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Nampa, ID
Full City Profile · Idaho · Canyon County County
3.1
/5.0
B
Good
106,289
Population
2,959/sq mi density
$72,122
Median Income
$30,748 per capita
$332,500
Home Value
$408,658 Zillow
$1,340
Median Rent
28.1% income on rent
54°F
Avg Temperature
302 sunny days/yr
312
Violent Crime/100K
1,799 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$72,122 median income, 1.8% unemployment
A
Affordability
4.1 / 5.0
$332,500 home value, $1,340/mo rent
F
Safety
1.0 / 5.0
312 violent crimes/100K
C+
Education
2.9 / 5.0
23.6% bachelor's degree or higher
Nampa experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 33°F in January while summers reach 82°F in July. The area gets 302 sunny days per year. Annual precipitation totals 15.2 inches. The area receives 21.1 inches of snow annually. Air quality is rated Good with a median AQI of 33.
Temperature
33°F Jan (0°C)
82°F Jul (28°C)
| Annual Average | 53.6°F |
| 1% below US avg | |
| January Average | 33°F (0°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 2,470 ft (753 m) |
| Area | 35.9 sq mi (93.0 km²) |
| Population Density | 2,959/sq mi |
| Coordinates | 43.5855°N, 116.5656°W |
| Timezone | America/Boise |
| County | Canyon County County |
| Nearest Airport | Boise Air Trml/Gowen Field (BOI) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 33.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 7.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 71.7 / 100 |
| Social Vulnerability | 18.5 / 100 |
| Community Resilience | 42.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Jordan Craters (87 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Jordan Craters | Volcanic field | 1,473 m (4,833 ft) | -1250 | 87 km |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 184 km |
| Diamond Craters | Volcanic field | 1,435 m (4,708 ft) | -5610 | 185 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 1.3 in | Wettest |
| February | 36°F (2°C) | 1.0 in | |
| March | 44°F (7°C) | 1.2 in | |
| April | 51°F (10°C) | 1.1 in | |
| May | 59°F (15°C) | 0.9 in | |
| June | 67°F (19°C) | 0.8 in | |
| July | 82°F (28°C) | 0.3 in | Warmest, Driest |
| August | 72°F (22°C) | 0.4 in | |
| September | 62°F (17°C) | 0.7 in | |
| October | 52°F (11°C) | 0.8 in | |
| November | 39°F (4°C) | 1.3 in | |
| December | 31°F (-1°C) | 1.2 in | Coldest |
Nampa has a seasonal temperature swing of 52°F / from 31°F in December to 82°F in July. Total annual precipitation is 10.9 inches, with January being the wettest month (1.3") and July the driest (0.3").