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Grass Range, MT
Full City Profile · Montana · Petroleum County County
1.6
/5.0
D
Poor
97
Population
693/sq mi density
$900
Median Rent
42.5% income on rent
46°F
Avg Temperature
273 sunny days/yr
390
Violent Crime/100K
1,220 property/100K
D
Overall
1.6 / 5.0
Below average overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
390 violent crimes/100K (3% above avg)
C
Education
2.2 / 5.0
15.1% bachelor's degree or higher
Grass Range experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 26°F in January while summers reach 68°F in July. The area gets 273 sunny days per year. Annual precipitation totals 17.9 inches. The area receives 50.1 inches of snow annually. Air quality is rated Good with a median AQI of 26.
Temperature
26°F Jan (-4°C)
68°F Jul (20°C)
| Annual Average | 45.5°F |
| 16% below US avg | |
| January Average | 26°F (-4°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 3,483 ft (1,062 m) |
| Area | 0.1 sq mi (0.4 km²) |
| Population Density | 693/sq mi |
| Coordinates | 47.0261°N, 108.8031°W |
| Timezone | America/Denver |
| County | Petroleum County County |
| Nearest Airport | Billings Logan International (BIL) 85 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 1.3 / 100 |
| Social Vulnerability | 27.4 / 100 |
| Community Resilience | 12.9 / 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 | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-4°C) | 0.7 in | |
| February | 28°F (-2°C) | 0.4 in | Driest |
| March | 35°F (2°C) | 0.8 in | |
| April | 44°F (7°C) | 1.4 in | |
| May | 53°F (12°C) | 3.2 in | Wettest |
| June | 62°F (17°C) | 2.7 in | |
| July | 68°F (20°C) | 1.7 in | Warmest |
| August | 68°F (20°C) | 1.6 in | |
| September | 57°F (14°C) | 1.3 in | |
| October | 47°F (8°C) | 0.9 in | |
| November | 33°F (1°C) | 0.5 in | |
| December | 26°F (-4°C) | 0.6 in | Coldest |
Grass Range has a seasonal temperature swing of 43°F / from 26°F in December to 68°F in July. Total annual precipitation is 15.7 inches, with May being the wettest month (3.2") and February the driest (0.4").