All Countries
Mammoth, WY
Full City Profile · Wyoming · Teton County County
3.0
/5.0
B
Good
50
Population
63/sq mi density
41°F
Avg Temperature
311 sunny days/yr
477
Violent Crime/100K
2,123 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
477 violent crimes/100K (26% above avg)
A+
Education
5.0 / 5.0
72.7% bachelor's degree or higher
Mammoth has a cool climate with an average annual temperature of 41°F (5°C). Winters average 22°F in January while summers reach 65°F in July. The area gets 311 sunny days per year. Annual precipitation totals 14.8 inches. The area receives 71.5 inches of snow annually. Air quality is rated Good with a median AQI of 34.
Temperature
22°F Jan (-6°C)
65°F Jul (18°C)
| Annual Average | 40.8°F |
| 24% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 6,042 ft (1,842 m) |
| Area | 0.8 sq mi (2.0 km²) |
| Population Density | 63/sq mi |
| Coordinates | 44.9732°N, 110.6929°W |
| Timezone | America/Denver |
| County | Teton County County |
| Nearest Airport | Bozeman Yellowstone International (BZN) 60 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0474 ppm |
| NO₂ (Nitrogen Dioxide) | 2.5 ppb |
| CO (Carbon Monoxide) | 0.12 ppm |
| PM2.5 (Fine Particles) | 2.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 70.6 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 42.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
1 volcano within 200 km. Closest: Yellowstone (60 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yellowstone | Caldera(s) | 2,805 m (9,203 ft) | -1350 | 60 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 2.5 in | Wettest |
| February | 17°F (-8°C) | 1.9 in | |
| March | 23°F (-5°C) | 2.0 in | |
| April | 30°F (-1°C) | 1.7 in | |
| May | 40°F (4°C) | 2.4 in | |
| June | 48°F (9°C) | 2.5 in | |
| July | 65°F (18°C) | 1.7 in | Warmest |
| August | 55°F (13°C) | 1.7 in | |
| September | 47°F (8°C) | 1.8 in | |
| October | 38°F (3°C) | 1.5 in | Driest |
| November | 24°F (-5°C) | 2.2 in | |
| December | 15°F (-9°C) | 2.5 in | Coldest |
Mammoth has a seasonal temperature swing of 50°F / from 15°F in December to 65°F in July. Total annual precipitation is 24.3 inches, with January being the wettest month (2.5") and October the driest (1.5").