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Unionville, MT
Full City Profile · Montana · Jefferson County County
3.1
/5.0
B
Good
386
Population
302/sq mi density
$67,417
Median Income
$28,843 per capita
$446,300
Home Value
$466,393 Zillow
40°F
Avg Temperature
273 sunny days/yr
528
Violent Crime/100K
3,799 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$67,417 median income, 0.0% unemployment
C+
Affordability
2.9 / 5.0
$446,300 home value, /mo rent
F
Safety
1.0 / 5.0
528 violent crimes/100K (39% above avg)
A
Education
4.4 / 5.0
42.1% bachelor's degree or higher
Unionville has a cool climate with an average annual temperature of 40°F (4°C). Winters average 21°F in January while summers reach 64°F in July. The area gets 273 sunny days per year. Annual precipitation totals 16.5 inches. Air quality is rated Good with a median AQI of 26.
Temperature
21°F Jan (-6°C)
64°F Jul (18°C)
| Annual Average | 40.3°F |
| 25% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 273 days/yr |
Geography
| Elevation | 5,060 ft (1,542 m) |
| Area | 1.3 sq mi (3.3 km²) |
| Population Density | 302/sq mi |
| Coordinates | 46.5464°N, 112.0852°W |
| Timezone | America/Denver |
| County | Jefferson County County |
| Nearest Airport | Helena Regional (HLN) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 21.6 / 100 |
| Social Vulnerability | 24.0 / 100 |
| Community Resilience | 34.4 / 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 | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 0.7 in | Coldest |
| February | 27°F (-3°C) | 0.5 in | Driest |
| March | 34°F (1°C) | 0.7 in | |
| April | 42°F (6°C) | 0.9 in | |
| May | 51°F (10°C) | 1.9 in | |
| June | 59°F (15°C) | 2.0 in | Wettest |
| July | 64°F (18°C) | 1.3 in | |
| August | 65°F (18°C) | 1.4 in | Warmest |
| September | 55°F (13°C) | 1.2 in | |
| October | 45°F (7°C) | 0.7 in | |
| November | 32°F (-0°C) | 0.6 in | |
| December | 23°F (-5°C) | 0.6 in |
Unionville has a seasonal temperature swing of 44°F / from 21°F in January to 65°F in August. Total annual precipitation is 12.4 inches, with June being the wettest month (2.0") and February the driest (0.5").