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Weather & Climate in Brandon, MT

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Brandon has a cool climate with an average annual temperature of 43°F (6°C). Winters average 25°F in January while summers reach 65°F in July. The area gets 311 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 13.0 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 5,706 feet.

Temperature

25°F Jan (-4°C) 65°F Jul (18°C)
Annual Average43.0°F
20% below US avg
January Average25°F (-4°C)
July Average65°F (18°C)
Sunny Days311 days/yr

Geography

Elevation5,706 ft (1,739 m)
Area0.4 sq mi (1.1 km²)
Population Density152/sq mi
Coordinates45.4660°N, 112.1339°W
TimezoneAmerica/Denver
CountySilver Bow County County
Nearest AirportBozeman Yellowstone International (BZN)
52 miles away

Precipitation & Snow

Annual Rainfall 13.0"
66% below US avg
Wettest Month (Jun) 2.32"
Driest Month (Feb) 0.47"

Air Quality

AQI Median26.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score38.0 / 100
Social Vulnerability17.0 / 100
Community Resilience62.9 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively Low
Wildfire Relatively Low
Flood Very Low
Hail Very Low
Strong Wind Very Low
Heat Wave Very Low
Winter Weather Relatively High
Lightning Relatively Moderate
Ice Storm Very Low
Drought Very Low
Cold Wave Relatively Moderate
Landslide Relatively Moderate
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

946 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.

Jul 26, 2005 16 km N of Dillon, Montana M5.6 39 km 13 km
Aug 20, 1999 22 km NW of Lima, Montana M5.1 92 km 16 km
Mar 30, 2014 22 km S of Mammoth, Wyoming M4.8 137 km 6 km
Apr 9, 2019 9 km NE of Lima, Montana M4.6 90 km 14 km
Apr 5, 2011 28 km NNE of Spencer, Idaho M4.4 95 km 12 km
May 8, 2007 8 km NNW of Alder, Montana M4.4 8 km 14 km
Feb 5, 2006 44 km NE of Spencer, Idaho M4.4 89 km 14 km
Jun 16, 2017 12 km E of Hebgen Lake Estates, Montana M4.4 115 km 9 km
Jun 13, 2016 45 km W of Hebgen Lake Estates, Montana M4.3 87 km 10 km
Oct 28, 1998 18 km S of Whitehall, Montana M4.3 26 km 5 km
Nov 24, 2000 24 km S of Mammoth, Wyoming M4.2 138 km 9 km
Jul 14, 2023 3 km S of Lima, Montana M4.2 102 km 12 km
Aug 16, 2019 4 km NW of Manhattan, Montana M4.2 76 km 2 km
Aug 6, 2019 3 km NW of Manhattan, Montana M4.1 76 km 5 km
Jun 18, 2006 6 km S of Pony, Montana M4.1 24 km 12 km
Oct 7, 2024 11 km E of Dillon, Montana M4.1 38 km 17 km
Apr 8, 2000 8 km ENE of Townsend, Montana M4.1 112 km 5 km
Aug 30, 1997 25 km WNW of Hebgen Lake Estates, Montana M4.1 86 km 4 km
Sep 3, 2016 16 km S of Whitehall, Montana M4.0 29 km 8 km
Jan 18, 2006 18 km NNE of Dillon, Montana M4.0 32 km 9 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

18 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.

Date Rating Distance Path Fatalities
Jun 14, 1962 EF2 99 km 0.1 mi 0
May 19, 1962 EF2 48 km 2.0 mi 0
Jun 6, 1976 EF1 98 km 3.0 mi 0
May 29, 1965 EF1 62 km 0.1 mi 0
Jun 15, 1960 EF1 87 km 1.3 mi 0
Aug 6, 2023 EF0 90 km 1.6 mi 0
Jul 10, 2016 EF0 49 km 0.0 mi 0
Jun 29, 1999 EF0 45 km 0.2 mi 0
Sep 15, 1997 EF0 89 km 0.1 mi 0
Jul 19, 1997 EF0 62 km 0.1 mi 0
Jul 2, 1997 EF0 78 km 0.1 mi 0
Jul 2, 1997 EF0 78 km 0.1 mi 0
Sep 5, 1995 EF0 92 km 0.1 mi 0
May 17, 1994 EF0 72 km 0.1 mi 0
Jul 6, 1993 EF0 92 km 0.1 mi 0
Jun 29, 1992 EF0 26 km 0.1 mi 0
Jul 14, 1962 EF0 99 km 0.1 mi 0
Aug 2, 1959 EF0 67 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

1 volcano within 200 km. Closest: Yellowstone (163 km).

Name Type Elevation Last Eruption Distance
Yellowstone Caldera(s) 2,805 m (9,203 ft) -1350 163 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: ALDER CREEK (38,189 acres, 2021).

Year Name Acres Burned Distance
2021 ALDER CREEK 38,189 87 km
2021 HAYSTACK 26,118 77 km
2012 BEAR TRAP 2 14,875 46 km
2006 CLARKS CANYON 14,848 66 km
2007 PATTENGAIL CREEK 13,471 87 km
2006 BIG CREEK 13,424 100 km
2012 MILLIE 10,497 84 km
2000 BOULDER COMPLEX (HIGH ORE ROAD) 9,625 93 km
2000 BEAVER CREEK 9,568 88 km
2015 EUSTIS 8,469 82 km
1988 SWEETWATER 8,405 49 km
2020 BRIDGER FOOTHILLS 8,291 99 km
2015 COTTONWOOD GULCH 8,100 81 km
2021 GOOSE 7,817 92 km
2018 MONUMENT 6,973 56 km
2018 BACON RIND 6,380 98 km
2013 EUREKA 6,213 72 km
2001 PURDY CREEK 4,868 74 km
2015 BEAR LAKE 4,695 85 km
2020 STATE CREEK 4,549 69 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 25°F (-4°C) 0.6 in
February 26°F (-4°C) 0.5 in Driest
March 30°F (-1°C) 0.9 in
April 38°F (3°C) 1.3 in
May 46°F (8°C) 2.3 in
June 55°F (13°C) 2.3 in Wettest
July 65°F (18°C) 1.5 in Warmest
August 60°F (16°C) 1.4 in
September 52°F (11°C) 1.4 in
October 42°F (6°C) 1.0 in
November 30°F (-1°C) 0.8 in
December 22°F (-6°C) 0.6 in Coldest

Brandon has a seasonal temperature swing of 43°F / from 22°F in December to 65°F in July. Total annual precipitation is 14.5 inches, with June being the wettest month (2.3") and February the driest (0.5").

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