Fairfield, ID
Full City Profile · Idaho · Camas County County
4.5
/5.0
A+
Excellent
519
Population
590/sq mi density
$77,917
Median Income
$36,745 per capita
$195,200
Home Value
$386,291 Zillow
$1,050
Median Rent
34.0% income on rent
42°F
Avg Temperature
A+
Overall
4.5 / 5.0
Strong
A+
Economy
4.6 / 5.0
$77,917 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$195,200 home value, $1,050/mo rent
B+
Education
3.9 / 5.0
35.8% bachelor's degree or higher
Fairfield has a cool climate with an average annual temperature of 42°F (6°C). Winters average 18°F in January while summers reach 67°F in July. Annual precipitation totals 14.6 inches. The area receives 102.0 inches of snow annually.
Temperature
18°F Jan (-8°C)
67°F Jul (19°C)
| Annual Average | 42.1°F |
| 22% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 67°F (19°C) |
Geography
| Elevation | 5,070 ft (1,545 m) |
| Area | 0.9 sq mi (2.3 km²) |
| Population Density | 590/sq mi |
| Coordinates | 43.3480°N, 114.8008°W |
| Timezone | America/Boise |
| County | Camas County County |
| Nearest Airport | Joslin Field/Magic Valley Regional (TWF) 62 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 6.0 / 100 |
| Social Vulnerability | 46.3 / 100 |
| Community Resilience | 37.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Volcano | Very Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Black Butte Crater Lava Field (41 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Black Butte Crater Lava Field | Shield | 1,478 m (4,849 ft) | -8400 | 41 km |
| Craters of the Moon | Pyroclastic cone(s) | 2,005 m (6,578 ft) | -130 | 105 km |
| Wapi Lava Field | Shield | 1,604 m (5,262 ft) | -300 | 139 km |
| Hell's Half Acre | Shield | 1,631 m (5,351 ft) | -3250 | 191 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 2.1 in | Coldest, Wettest |
| February | 22°F (-6°C) | 1.5 in | |
| March | 31°F (-1°C) | 1.6 in | |
| April | 42°F (6°C) | 1.1 in | |
| May | 51°F (11°C) | 1.6 in | |
| June | 58°F (15°C) | 0.9 in | |
| July | 67°F (19°C) | 0.4 in | Warmest |
| August | 66°F (19°C) | 0.4 in | Driest |
| September | 57°F (14°C) | 0.7 in | |
| October | 45°F (7°C) | 1.0 in | |
| November | 31°F (-1°C) | 1.4 in | |
| December | 19°F (-7°C) | 2.0 in |
Fairfield has a seasonal temperature swing of 49°F / from 18°F in January to 67°F in July. Total annual precipitation is 14.6 inches, with January being the wettest month (2.1") and August the driest (0.4").