Weather & Climate in Twin Bridges, MT

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

Twin Bridges has a cool climate with an average annual temperature of 44°F (6°C). Winters average 24°F in January while summers reach 65°F in July. The area gets 293 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 9.4 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 4,633 feet.

Temperature

24°F Jan (-4°C) 65°F Jul (19°C)

Annual Average	43.5°F
	19% below US avg
January Average	24°F (-4°C)
July Average	65°F (19°C)
Sunny Days	293 days/yr

Geography

Elevation	4,633 ft (1,412 m)
Area	1.0 sq mi (2.6 km²)
Population Density	216/sq mi
Coordinates	45.5429°N, 112.3341°W
Timezone	America/Denver
County	Silver Bow County County
Nearest Airport	Bozeman Yellowstone International (BZN) 59 miles away

Precipitation & Snow

Annual Rainfall 9.4"

75% below US avg

Wettest Month (Jun) 2.09"

Driest Month (Feb) 0.28"

Air Quality

AQI Median	26.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	38.0 / 100
Social Vulnerability	17.0 / 100
Community Resilience	62.9 / 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

848 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.

Jul 6, 2017	11 km SE of Lincoln, Montana	M5.8	150 km	12 km
Jul 26, 2005	16 km N of Dillon, Montana	M5.6	30 km	13 km
Aug 20, 1999	22 km NW of Lima, Montana	M5.1	92 km	16 km
Jul 6, 2017	15 km S of Lincoln, Montana	M5.0	144 km	15 km
Apr 9, 2019	9 km NE of Lima, Montana	M4.6	95 km	14 km
Feb 5, 2006	44 km NE of Spencer, Idaho	M4.4	102 km	14 km
Apr 5, 2011	28 km NNE of Spencer, Idaho	M4.4	105 km	12 km
May 8, 2007	8 km NNW of Alder, Montana	M4.4	23 km	14 km
Jul 6, 2017	14 km SE of Lincoln, Montana	M4.4	147 km	10 km
Jun 16, 2017	12 km E of Hebgen Lake Estates, Montana	M4.4	133 km	9 km
Jun 13, 2016	45 km W of Hebgen Lake Estates, Montana	M4.3	101 km	10 km
Oct 28, 1998	18 km S of Whitehall, Montana	M4.3	24 km	5 km
Aug 16, 2019	4 km NW of Manhattan, Montana	M4.2	85 km	2 km
Jul 14, 2023	3 km S of Lima, Montana	M4.2	106 km	12 km
Aug 6, 2019	3 km NW of Manhattan, Montana	M4.1	85 km	5 km
Apr 8, 2000	8 km ENE of Townsend, Montana	M4.1	114 km	5 km
Aug 30, 1997	25 km WNW of Hebgen Lake Estates, Montana	M4.1	102 km	4 km
Jun 18, 2006	6 km S of Pony, Montana	M4.1	34 km	12 km
Oct 7, 2024	11 km E of Dillon, Montana	M4.1	37 km	17 km
Sep 3, 2016	16 km S of Whitehall, Montana	M4.0	26 km	8 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Jun 14, 1962	EF2	85 km	0.1 mi	0
May 19, 1962	EF2	39 km	2.0 mi	0
Jul 3, 1988	EF1	87 km	0.2 mi	0
Jun 28, 1982	EF1	99 km	0.5 mi	0
Jun 6, 1976	EF1	84 km	3.0 mi	0
May 29, 1965	EF1	45 km	0.1 mi	0
Jun 15, 1960	EF1	100 km	1.3 mi	0
Aug 6, 2023	EF0	97 km	1.6 mi	0
Aug 20, 2018	EF0	86 km	0.8 mi	0
Jul 10, 2016	EF0	44 km	0.0 mi	0
Jun 29, 1999	EF0	63 km	0.2 mi	0
Sep 15, 1997	EF0	73 km	0.1 mi	0
Jul 19, 1997	EF0	54 km	0.1 mi	0
Jul 2, 1997	EF0	87 km	0.1 mi	0
Jul 2, 1997	EF0	87 km	0.1 mi	0
Sep 5, 1995	EF0	95 km	0.1 mi	0
May 17, 1994	EF0	78 km	0.1 mi	0
Jun 29, 1992	EF0	43 km	0.1 mi	0
May 16, 1991	EF0	92 km	0.2 mi	0
Jul 14, 1962	EF0	85 km	0.1 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

1 volcano within 200 km. Closest: Yellowstone (180 km).

Name	Type	Elevation	Last Eruption	Distance
Yellowstone	Caldera(s)	2,805 m (9,203 ft)	-1350	180 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	70 km
2021	HAYSTACK	26,118	69 km
2012	BEAR TRAP 2	14,875	59 km
2006	CLARKS CANYON	14,848	63 km
2007	PATTENGAIL CREEK	13,471	70 km
2000	BOULDER COMPLEX (HIGH ORE ROAD)	9,625	86 km
2015	EUSTIS	8,469	87 km
1988	SWEETWATER	8,405	54 km
2015	COTTONWOOD GULCH	8,100	88 km
2018	MONUMENT	6,973	71 km
2013	EUREKA	6,213	85 km
2001	PURDY CREEK	4,868	90 km
2015	BEAR LAKE	4,695	69 km
2020	STATE CREEK	4,549	62 km
2012	PONY	4,453	32 km
2018	WIGWAM	4,412	56 km
2012	NINETEEN MILE	3,549	36 km
2011	STEWART FIRE	3,194	75 km
2017	MAUER MOUNTAIN	2,828	72 km
2017	CONROW	2,745	53 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	24°F (-4°C)	0.4 in
February	27°F (-3°C)	0.3 in	Driest
March	33°F (0°C)	0.6 in
April	40°F (5°C)	0.9 in
May	49°F (9°C)	1.8 in
June	57°F (14°C)	2.1 in	Wettest
July	65°F (19°C)	1.2 in	Warmest
August	63°F (17°C)	1.3 in
September	54°F (12°C)	1.2 in
October	44°F (7°C)	0.6 in
November	31°F (-1°C)	0.5 in
December	22°F (-5°C)	0.4 in	Coldest

Twin Bridges has a seasonal temperature swing of 43°F / from 22°F in December to 65°F in July. Total annual precipitation is 11.1 inches, with June being the wettest month (2.1") and February the driest (0.3").

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