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Weather & Climate in Bainville, MT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bainville has a cool climate with an average annual temperature of 41°F (5°C). Winters average 11°F in January while summers reach 69°F in July. The area gets 274 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 14.1 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 26 / among the cleanest air in the country. The city sits at an elevation of 1,957 feet.
Temperature
11°F Jan (-12°C)
69°F Jul (21°C)
| Annual Average | 41.0°F |
| 24% below US avg | |
| January Average | 11°F (-12°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 1,957 ft (596 m) |
| Area | 1.3 sq mi (3.3 km²) |
| Population Density | 248/sq mi |
| Coordinates | 48.1440°N, 104.2211°W |
| Timezone | America/Denver |
| County | Roosevelt County County |
| Nearest Airport | Williston Basin International (XWA) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 26.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 54.5 / 100 |
| Social Vulnerability | 94.5 / 100 |
| Community Resilience | 1.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Feb 25, 2014 | 23 km N of Brockton, Montana | M3.8 | 54 km | 5 km |
| Jul 29, 1998 | 16 km WNW of Froid, Montana | M3.8 | 44 km | 5 km |
| Nov 11, 1998 | 10 km SW of Grenora, North Dakota | M3.5 | 47 km | 5 km |
| Sep 28, 2012 | 22 km ESE of Williston, North Dakota | M3.3 | 66 km | 5 km |
| May 6, 2014 | 12 km NNW of Knife River, Montana | M2.6 | 68 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
81 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 4 fatalities, 41 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 26, 2010 | EF3 | 81 km | 18.0 mi | 2 |
| Jun 14, 1950 | EF3 | 93 km | 23.7 mi | 0 |
| Jul 9, 2018 | EF2 | 80 km | 0.5 mi | 1 |
| May 26, 2014 | EF2 | 85 km | 0.5 mi | 0 |
| Jun 27, 1982 | EF2 | 28 km | 0.4 mi | 0 |
| Jun 5, 1976 | EF2 | 97 km | 2.0 mi | 0 |
| Jun 25, 1975 | EF2 | 22 km | 0.1 mi | 0 |
| Jun 11, 1972 | EF2 | 65 km | 9.1 mi | 0 |
| Jul 2, 1971 | EF2 | 41 km | 10.0 mi | 0 |
| Sep 21, 1969 | EF2 | 33 km | 1.0 mi | 0 |
| Jun 13, 1953 | EF2 | 63 km | 0.1 mi | 0 |
| Jul 1, 1952 | EF2 | 62 km | 9.7 mi | 0 |
| Jul 9, 2018 | EF1 | 73 km | 2.1 mi | 0 |
| Jun 30, 2015 | EF1 | 75 km | 17.5 mi | 0 |
| Jun 11, 2007 | EF1 | 77 km | 3.0 mi | 0 |
| Jul 21, 1999 | EF1 | 2 km | 1.0 mi | 0 |
| Jul 4, 1998 | EF1 | 95 km | 3.0 mi | 0 |
| Jul 4, 1998 | EF1 | 77 km | 2.0 mi | 0 |
| Jun 29, 1991 | EF1 | 97 km | 0.2 mi | 0 |
| Jul 2, 1990 | EF1 | 100 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: WILLIAMS CO WILDLAND FIRE (67,150 acres, 2024).
| Year | Name | Acres Burned | Distance |
| 2024 | WILLIAMS CO WILDLAND FIRE | 67,150 | 76 km |
| 1999 | GAP/ROUGH CREEK | 53,708 | 64 km |
| 1988 | BAINVILLE | 12,790 | 13 km |
| 2016 | FLAGSTAFF HILL | 9,129 | 61 km |
| 2012 | HIGHWAY 13-20 | 8,372 | 86 km |
| 1999 | ROUGH CRK | 7,887 | 96 km |
| 2017 | YOOPER | 7,834 | 35 km |
| 2018 | BUFFALO PASTURE | 7,624 | 80 km |
| 2003 | GREYBULL | 7,229 | 92 km |
| 1999 | OUTLOOK | 6,292 | 93 km |
| 2021 | SMITH | 5,212 | 49 km |
| 2006 | BUFFALO RANCH | 5,206 | 85 km |
| 1999 | ANTELOPE | 5,118 | 58 km |
| 2021 | HORSE PASTURE | 4,431 | 89 km |
| 2015 | RIDGE ROAD | 3,390 | 84 km |
| 1988 | MONTANA LINE | 3,307 | 49 km |
| 2022 | BLISTER | 3,298 | 99 km |
| 1988 | CINNAMON CREEK | 3,204 | 91 km |
| 1999 | HALLOWEEN | 2,845 | 95 km |
| 2021 | 13 MILE FIRE | 2,585 | 45 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 11°F (-12°C) | 0.4 in | Coldest |
| February | 20°F (-7°C) | 0.3 in | Driest |
| March | 32°F (-0°C) | 0.6 in | |
| April | 45°F (7°C) | 1.2 in | |
| May | 57°F (14°C) | 2.1 in | |
| June | 66°F (19°C) | 2.7 in | Wettest |
| July | 69°F (21°C) | 2.1 in | |
| August | 70°F (21°C) | 1.4 in | Warmest |
| September | 59°F (15°C) | 1.4 in | |
| October | 47°F (8°C) | 0.9 in | |
| November | 29°F (-2°C) | 0.4 in | |
| December | 16°F (-9°C) | 0.4 in |
Bainville has a seasonal temperature swing of 59°F / from 11°F in January to 70°F in August. Total annual precipitation is 13.9 inches, with June being the wettest month (2.7") and February the driest (0.3").