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Mammoth, MT
Full City Profile · Montana · Silver Bow County County
3.0
/5.0
B
Good
17
Population
49/sq mi density
44°F
Avg Temperature
293 sunny days/yr
117
Violent Crime/100K
584 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
117 violent crimes/100K
A+
Education
5.0 / 5.0
100.0% bachelor's degree or higher
Mammoth has a cool climate with an average annual temperature of 44°F (7°C). Winters average 24°F in January while summers reach 65°F in July. The area gets 293 sunny days per year. Annual precipitation totals 9.4 inches. Air quality is rated Good with a median AQI of 26.
Temperature
24°F Jan (-4°C)
65°F Jul (19°C)
| Annual Average | 43.5°F |
| 19% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 65°F (19°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 6,004 ft (1,830 m) |
| Area | 0.4 sq mi (0.9 km²) |
| Population Density | 49/sq mi |
| Coordinates | 45.6692°N, 112.0177°W |
| Timezone | America/Denver |
| County | Silver Bow County County |
| Nearest Airport | Bozeman Yellowstone International (BZN) 43 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 8.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 38.0 / 100 |
| Social Vulnerability | 17.0 / 100 |
| Community Resilience | 62.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
1 volcano within 200 km. Closest: Yellowstone (174 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yellowstone | Caldera(s) | 2,805 m (9,203 ft) | -1350 | 174 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 0.6 in | |
| February | 27°F (-3°C) | 0.4 in | Driest |
| March | 31°F (-1°C) | 0.8 in | |
| April | 39°F (4°C) | 1.0 in | |
| May | 47°F (8°C) | 2.1 in | |
| June | 55°F (13°C) | 2.2 in | Wettest |
| July | 65°F (19°C) | 1.3 in | Warmest |
| August | 61°F (16°C) | 1.3 in | |
| September | 52°F (11°C) | 1.3 in | |
| October | 43°F (6°C) | 0.8 in | |
| November | 31°F (-1°C) | 0.6 in | |
| December | 24°F (-5°C) | 0.6 in | Coldest |
Mammoth has a seasonal temperature swing of 42°F / from 24°F in December to 65°F in July. Total annual precipitation is 12.6 inches, with June being the wettest month (2.2") and February the driest (0.4").