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Pompeys Pillar, MT
Full City Profile · Montana · Big Horn County County
3.0
/5.0
B
Good
25
Population
125/sq mi density
48°F
Avg Temperature
311 sunny days/yr
378
Violent Crime/100K
4,476 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
378 violent crimes/100K
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Pompeys Pillar experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 24°F in January while summers reach 73°F in July. The area gets 311 sunny days per year. Annual precipitation totals 13.8 inches. The area receives 27.9 inches of snow annually. Air quality is rated Good with a median AQI of 26.
Temperature
24°F Jan (-5°C)
73°F Jul (23°C)
| Annual Average | 47.7°F |
| 12% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 2,892 ft (881 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 125/sq mi |
| Coordinates | 45.9906°N, 107.9504°W |
| Timezone | America/Denver |
| County | Big Horn County County |
| Nearest Airport | Billings Logan International (BIL) 31 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 57.2 / 100 |
| Social Vulnerability | 94.2 / 100 |
| Community Resilience | 4.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 0.7 in | Coldest |
| February | 27°F (-3°C) | 0.6 in | Driest |
| March | 35°F (2°C) | 1.0 in | |
| April | 45°F (7°C) | 1.8 in | |
| May | 55°F (13°C) | 2.7 in | Wettest |
| June | 64°F (18°C) | 2.1 in | |
| July | 73°F (23°C) | 1.3 in | Warmest |
| August | 71°F (22°C) | 1.1 in | |
| September | 60°F (16°C) | 1.7 in | |
| October | 48°F (9°C) | 1.2 in | |
| November | 34°F (1°C) | 0.8 in | |
| December | 25°F (-4°C) | 0.7 in |
Pompeys Pillar has a seasonal temperature swing of 49°F / from 24°F in January to 73°F in July. Total annual precipitation is 15.7 inches, with May being the wettest month (2.7") and February the driest (0.6").