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Sun River, MT
Full City Profile · Montana · Cascade County County
3.3
/5.0
B
Good
62
Population
33/sq mi density
$42,237
Median Income
$25,860 per capita
$167,100
Home Value
$430,933 Zillow
44°F
Avg Temperature
273 sunny days/yr
272
Violent Crime/100K
4,304 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Economy
2.7 / 5.0
$42,237 median income, 9.7% unemployment
A
Affordability
4.5 / 5.0
$167,100 home value, /mo rent
F
Safety
1.0 / 5.0
272 violent crimes/100K
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Sun River has a cool climate with an average annual temperature of 44°F (7°C). Winters average 26°F in January while summers reach 67°F in July. The area gets 273 sunny days per year. Annual precipitation totals 12.4 inches. Air quality is rated Good with a median AQI of 26.
Temperature
26°F Jan (-3°C)
67°F Jul (19°C)
| Annual Average | 44.4°F |
| 18% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 3,416 ft (1,041 m) |
| Area | 1.9 sq mi (4.8 km²) |
| Population Density | 33/sq mi |
| Coordinates | 47.5305°N, 111.7240°W |
| Timezone | America/Denver |
| County | Cascade County County |
| Nearest Airport | Great Falls International (GTF) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.1 / 100 |
| Social Vulnerability | 27.1 / 100 |
| Community Resilience | 76.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 0.5 in | |
| February | 28°F (-2°C) | 0.3 in | Driest |
| March | 35°F (2°C) | 0.8 in | |
| April | 45°F (7°C) | 1.1 in | |
| May | 53°F (12°C) | 2.3 in | Wettest |
| June | 61°F (16°C) | 2.2 in | |
| July | 67°F (19°C) | 1.4 in | Warmest |
| August | 66°F (19°C) | 1.5 in | |
| September | 56°F (13°C) | 1.1 in | |
| October | 47°F (8°C) | 0.6 in | |
| November | 34°F (1°C) | 0.4 in | |
| December | 26°F (-4°C) | 0.5 in | Coldest |
Sun River has a seasonal temperature swing of 41°F / from 26°F in December to 67°F in July. Total annual precipitation is 12.6 inches, with May being the wettest month (2.3") and February the driest (0.3").