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Idaho City, ID
Full City Profile · Idaho · Boise County County
2.9
/5.0
C+
Fair
556
Population
830/sq mi density
$41,111
Median Income
$28,584 per capita
$94,500
Home Value
$393,433 Zillow
$776
Median Rent
27.7% income on rent
44°F
Avg Temperature
291 sunny days/yr
296
Violent Crime/100K
2,086 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$41,111 median income, 0.5% unemployment
A+
Affordability
5.0 / 5.0
$94,500 home value, $776/mo rent
F
Safety
1.0 / 5.0
296 violent crimes/100K
D
Education
1.9 / 5.0
11.0% bachelor's degree or higher
Idaho City has a cool climate with an average annual temperature of 44°F (7°C). Winters average 24°F in January while summers reach 66°F in July. The area gets 291 sunny days per year. Annual precipitation totals 21.1 inches. Air quality is rated Good with a median AQI of 42.
Temperature
24°F Jan (-4°C)
66°F Jul (19°C)
| Annual Average | 43.9°F |
| 19% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 291 days/yr |
Geography
| Elevation | 3,984 ft (1,214 m) |
| Area | 0.7 sq mi (1.7 km²) |
| Population Density | 830/sq mi |
| Coordinates | 43.8278°N, 115.8305°W |
| Timezone | America/Boise |
| County | Boise County County |
| Nearest Airport | Boise Air Trml/Gowen Field (BOI) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 64.8% |
| Unhealthy Days | 8 |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 48.9 / 100 |
| Social Vulnerability | 33.3 / 100 |
| Community Resilience | 13.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Black Butte Crater Lava Field (139 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 139 km |
| Jordan Craters | Volcanic field | 1,473 m (4,833 ft) | -1250 | 152 km |
| Craters of the Moon | Pyroclastic cone(s) | 2,005 m (6,578 ft) | -130 | 193 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 3.4 in | Coldest, Wettest |
| February | 27°F (-3°C) | 2.4 in | |
| March | 32°F (-0°C) | 2.1 in | |
| April | 39°F (4°C) | 1.7 in | |
| May | 47°F (8°C) | 1.5 in | |
| June | 54°F (12°C) | 1.5 in | |
| July | 66°F (19°C) | 0.6 in | Warmest, Driest |
| August | 63°F (17°C) | 0.8 in | |
| September | 55°F (13°C) | 1.1 in | |
| October | 45°F (7°C) | 1.4 in | |
| November | 33°F (0°C) | 2.9 in | |
| December | 25°F (-4°C) | 3.3 in |
Idaho City has a seasonal temperature swing of 42°F / from 24°F in January to 66°F in July. Total annual precipitation is 22.5 inches, with January being the wettest month (3.4") and July the driest (0.6").