Pompeys Pillar, MT
Full City Profile · Montana · Big Horn County County
5.0
/5.0
A+
Excellent
25
Population
125/sq mi density
44°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Pompeys Pillar has a cool climate with an average annual temperature of 44°F (7°C). Winters average 22°F in January while summers reach 70°F in July. Annual precipitation totals 14.5 inches. The area receives 46.1 inches of snow annually.
Temperature
22°F Jan (-6°C)
70°F Jul (21°C)
| Annual Average | 44.2°F |
| 18% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 70°F (21°C) |
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
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 | 22°F (-6°C) | 0.5 in | Coldest |
| February | 24°F (-4°C) | 0.6 in | |
| March | 33°F (1°C) | 0.7 in | |
| April | 42°F (6°C) | 1.6 in | |
| May | 52°F (11°C) | 2.6 in | |
| June | 61°F (16°C) | 2.7 in | Wettest |
| July | 70°F (21°C) | 1.4 in | Warmest |
| August | 69°F (20°C) | 0.9 in | |
| September | 58°F (14°C) | 1.2 in | |
| October | 44°F (7°C) | 1.4 in | |
| November | 32°F (0°C) | 0.5 in | |
| December | 24°F (-5°C) | 0.4 in | Driest |
Pompeys Pillar has a seasonal temperature swing of 48°F / from 22°F in January to 70°F in July. Total annual precipitation is 14.5 inches, with June being the wettest month (2.7") and December the driest (0.4").