Westby, MT
Full City Profile · Montana · Sheridan County County
3.6
/5.0
B+
Good
253
Population
452/sq mi density
$24,583
Median Income
$38,129 per capita
$61,900
Home Value
$200,539 Zillow
$575
Median Rent
11.3% income on rent
39°F
Avg Temperature
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$24,583 median income, 1.3% unemployment
A+
Affordability
5.0 / 5.0
$61,900 home value, $575/mo rent
C+
Education
2.7 / 5.0
21.1% bachelor's degree or higher
Westby has a cool climate with an average annual temperature of 39°F (4°C). Winters average 9°F in January while summers reach 67°F in July. Annual precipitation totals 14.9 inches. The area receives 36.5 inches of snow annually.
Temperature
9°F Jan (-13°C)
67°F Jul (20°C)
| Annual Average | 39.1°F |
| 28% below US avg | |
| January Average | 9°F (-13°C) |
| July Average | 67°F (20°C) |
Geography
| Elevation | 2,083 ft (635 m) |
| Area | 0.5 sq mi (1.4 km²) |
| Population Density | 452/sq mi |
| Coordinates | 48.8705°N, 104.0571°W |
| Timezone | America/Denver |
| County | Sheridan County County |
| Nearest Airport | Williston Basin International (XWA) 44 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 15.1 / 100 |
| Social Vulnerability | 59.2 / 100 |
| Community Resilience | 12.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 9°F (-13°C) | 0.4 in | Coldest |
| February | 13°F (-11°C) | 0.3 in | Driest |
| March | 25°F (-4°C) | 0.6 in | |
| April | 40°F (4°C) | 1.0 in | |
| May | 52°F (11°C) | 2.2 in | |
| June | 62°F (16°C) | 3.1 in | Wettest |
| July | 67°F (20°C) | 2.5 in | Warmest |
| August | 66°F (19°C) | 1.6 in | |
| September | 55°F (13°C) | 1.3 in | |
| October | 41°F (5°C) | 1.0 in | |
| November | 25°F (-4°C) | 0.5 in | |
| December | 14°F (-10°C) | 0.5 in |
Westby has a seasonal temperature swing of 59°F / from 9°F in January to 67°F in July. Total annual precipitation is 14.9 inches, with June being the wettest month (3.1") and February the driest (0.3").