Deerfield Colony, MT
Full City Profile · Montana · Fergus County County
20
Population
35/sq mi density
43°F
Avg Temperature
Deerfield Colony has a cool climate with an average annual temperature of 43°F (6°C). Winters average 24°F in January while summers reach 66°F in July. Annual precipitation totals 17.2 inches. The area receives 44.5 inches of snow annually.
Temperature
24°F Jan (-5°C)
66°F Jul (19°C)
| Annual Average | 43.1°F |
| 20% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 3,463 ft (1,056 m) |
| Area | 0.6 sq mi (1.5 km²) |
| Population Density | 35/sq mi |
| Coordinates | 47.2571°N, 109.6769°W |
| Timezone | America/Denver |
| County | Fergus County County |
| Nearest Airport | Great Falls International (GTF) 81 miles away |
Precipitation & Snow
Air Quality
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0469 ppm |
| NO₂ (Nitrogen Dioxide) | 1.7 ppb |
| PM2.5 (Fine Particles) | 5.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 45.1 / 100 |
| Social Vulnerability | 45.2 / 100 |
| Community Resilience | 70.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 0.6 in | Coldest |
| February | 25°F (-4°C) | 0.5 in | Driest |
| March | 33°F (0°C) | 0.9 in | |
| April | 41°F (5°C) | 1.7 in | |
| May | 50°F (10°C) | 2.9 in | |
| June | 58°F (14°C) | 3.4 in | Wettest |
| July | 66°F (19°C) | 1.8 in | Warmest |
| August | 65°F (19°C) | 1.7 in | |
| September | 56°F (13°C) | 1.4 in | |
| October | 43°F (6°C) | 1.3 in | |
| November | 32°F (0°C) | 0.7 in | |
| December | 24°F (-4°C) | 0.5 in |
Deerfield Colony has a seasonal temperature swing of 42°F / from 24°F in January to 66°F in July. Total annual precipitation is 17.2 inches, with June being the wettest month (3.4") and February the driest (0.5").