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Garrison, MT
Full City Profile · Montana · Powell County County
2.0
/5.0
C
Fair
138
Population
14/sq mi density
$46,250
Median Income
$20,338 per capita
$350,000
Home Value
$807,090 Zillow
41°F
Avg Temperature
273 sunny days/yr
454
Violent Crime/100K
3,761 property/100K
C
Overall
2.0 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$46,250 median income, 5.3% unemployment
C
Affordability
2.4 / 5.0
$350,000 home value, /mo rent
F
Safety
1.0 / 5.0
454 violent crimes/100K (19% above avg)
F
Education
1.1 / 5.0
1.4% bachelor's degree or higher
Garrison has a cool climate with an average annual temperature of 41°F (5°C). Winters average 22°F in January while summers reach 63°F in July. The area gets 273 sunny days per year. Annual precipitation totals 18.8 inches. Air quality is rated Good with a median AQI of 26.
Temperature
22°F Jan (-6°C)
63°F Jul (17°C)
| Annual Average | 41.0°F |
| 24% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 4,395 ft (1,340 m) |
| Area | 9.6 sq mi (25.0 km²) |
| Population Density | 14/sq mi |
| Coordinates | 46.5402°N, 112.8168°W |
| Timezone | America/Denver |
| County | Powell County County |
| Nearest Airport | Helena Regional (HLN) 40 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 10.0 / 100 |
| Social Vulnerability | 58.1 / 100 |
| Community Resilience | 19.4 / 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 | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 0.9 in | |
| February | 25°F (-4°C) | 0.6 in | Driest |
| March | 32°F (-0°C) | 0.8 in | |
| April | 39°F (4°C) | 1.1 in | |
| May | 48°F (9°C) | 2.0 in | Wettest |
| June | 56°F (13°C) | 1.9 in | |
| July | 63°F (17°C) | 1.2 in | Warmest |
| August | 62°F (17°C) | 1.3 in | |
| September | 53°F (12°C) | 1.2 in | |
| October | 43°F (6°C) | 0.8 in | |
| November | 30°F (-1°C) | 0.8 in | |
| December | 22°F (-6°C) | 0.9 in | Coldest |
Garrison has a seasonal temperature swing of 41°F / from 22°F in December to 63°F in July. Total annual precipitation is 13.5 inches, with May being the wettest month (2.0") and February the driest (0.6").