Sweetwater, ID
Full City Profile · Idaho · Nez Perce County County
4.5
/5.0
A+
Excellent
168
Population
141/sq mi density
$120,500
Median Income
$46,296 per capita
$190,500
Home Value
$383,420 Zillow
54°F
Avg Temperature
A+
Overall
4.5 / 5.0
Strong
A+
Economy
5.0 / 5.0
$120,500 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$190,500 home value, /mo rent
B+
Education
3.6 / 5.0
32.7% bachelor's degree or higher
Sweetwater experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 36°F in January while summers reach 76°F in July. Annual precipitation totals 12.9 inches. The area receives 12.7 inches of snow annually. Air quality is rated Good with a median AQI of 29.
Temperature
36°F Jan (2°C)
76°F Jul (24°C)
| Annual Average | 53.8°F |
| 0% below US avg | |
| January Average | 36°F (2°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 1,117 ft (340 m) |
| Area | 1.2 sq mi (3.1 km²) |
| Population Density | 141/sq mi |
| Coordinates | 46.3676°N, 116.7975°W |
| Timezone | America/Boise |
| County | Nez Perce County County |
| Nearest Airport | Pullman/Moscow Regional (PUW) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 29.0 |
| Rating | Good |
| Good Days % | 75.4% |
| Unhealthy Days | 8 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 33.0 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 55.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 36°F (2°C) | 1.1 in | |
| February | 39°F (4°C) | 1.0 in | |
| March | 45°F (7°C) | 1.3 in | |
| April | 52°F (11°C) | 1.4 in | |
| May | 60°F (16°C) | 1.7 in | Wettest |
| June | 67°F (19°C) | 1.3 in | |
| July | 76°F (24°C) | 0.5 in | Warmest, Driest |
| August | 75°F (24°C) | 0.5 in | |
| September | 66°F (19°C) | 0.6 in | |
| October | 53°F (11°C) | 1.1 in | |
| November | 42°F (5°C) | 1.2 in | |
| December | 35°F (2°C) | 1.1 in | Coldest |
Sweetwater has a seasonal temperature swing of 41°F / from 35°F in December to 76°F in July. Total annual precipitation is 12.9 inches, with May being the wettest month (1.7") and July the driest (0.5").