Roundup, MT
Full City Profile · Montana · Musselshell County County
3.5
/5.0
B+
Good
1,964
Population
1,522/sq mi density
$57,632
Median Income
$36,922 per capita
$118,300
Home Value
$250,419 Zillow
$886
Median Rent
24.8% income on rent
47°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$57,632 median income, 5.3% unemployment
A+
Affordability
5.0 / 5.0
$118,300 home value, $886/mo rent
C
Education
2.1 / 5.0
13.4% bachelor's degree or higher
Roundup experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 25°F in January while summers reach 71°F in July. Annual precipitation totals 14.9 inches. The area receives 24.4 inches of snow annually.
Temperature
25°F Jan (-4°C)
71°F Jul (22°C)
| Annual Average | 46.5°F |
| 14% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 71°F (22°C) |
Geography
| Elevation | 3,226 ft (983 m) |
| Area | 1.3 sq mi (3.3 km²) |
| Population Density | 1,522/sq mi |
| Coordinates | 46.4483°N, 108.5397°W |
| Timezone | America/Denver |
| County | Musselshell County County |
| Nearest Airport | Billings Logan International (BIL) 44 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 17.1 / 100 |
| Social Vulnerability | 74.3 / 100 |
| Community Resilience | 25.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 0.4 in | Coldest, Driest |
| February | 28°F (-2°C) | 0.4 in | |
| March | 36°F (2°C) | 0.7 in | |
| April | 45°F (7°C) | 1.7 in | |
| May | 54°F (12°C) | 2.6 in | |
| June | 63°F (17°C) | 2.9 in | Wettest |
| July | 71°F (22°C) | 1.7 in | Warmest |
| August | 70°F (21°C) | 1.2 in | |
| September | 60°F (15°C) | 1.2 in | |
| October | 46°F (8°C) | 1.2 in | |
| November | 34°F (1°C) | 0.5 in | |
| December | 26°F (-4°C) | 0.4 in |
Roundup has a seasonal temperature swing of 46°F / from 25°F in January to 71°F in July. Total annual precipitation is 14.9 inches, with June being the wettest month (2.9") and January the driest (0.4").