Weather & Climate in Wilsall, MT

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

Wilsall has a cool climate with an average annual temperature of 42°F (5°C). Winters average 21°F in January while summers reach 66°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 14.9 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 5,057 feet.

Temperature

21°F Jan (-6°C) 66°F Jul (19°C)

Annual Average	41.6°F
	23% below US avg
January Average	21°F (-6°C)
July Average	66°F (19°C)
Sunny Days	311 days/yr

Geography

Elevation	5,057 ft (1,541 m)
Area	1.0 sq mi (2.6 km²)
Population Density	197/sq mi
Coordinates	45.9843°N, 110.6604°W
Timezone	America/Denver
County	Park County County
Nearest Airport	Bozeman Yellowstone International (BZN) 28 miles away

Precipitation & Snow

Annual Rainfall 14.9"

61% below US avg

Wettest Month (May) 3.03"

Driest Month (Feb) 0.59"

Air Quality

AQI Median	26.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	66.3 / 100
Social Vulnerability	29.1 / 100
Community Resilience	82.1 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Relatively Low
Wildfire	Relatively Moderate
Flood	Relatively Low
Hail	Relatively Low
Strong Wind	Very Low
Heat Wave	Very Low
Winter Weather	Relatively Moderate
Lightning	Relatively Moderate
Ice Storm	Very Low
Drought	Very Low
Cold Wave	Relatively Moderate
Landslide	Relatively Moderate
Volcano	Very Low
Avalanche	Very High

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

594 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.

Mar 30, 2014	22 km S of Mammoth, Wyoming	M4.8	135 km	6 km
May 8, 2007	8 km NNW of Alder, Montana	M4.4	132 km	14 km
Jun 16, 2017	12 km E of Hebgen Lake Estates, Montana	M4.4	137 km	9 km
Oct 28, 1998	18 km S of Whitehall, Montana	M4.3	118 km	5 km
Nov 24, 2000	24 km S of Mammoth, Wyoming	M4.2	137 km	9 km
Aug 16, 2019	4 km NW of Manhattan, Montana	M4.2	56 km	2 km
Aug 30, 1997	25 km WNW of Hebgen Lake Estates, Montana	M4.1	143 km	4 km
Jun 18, 2006	6 km S of Pony, Montana	M4.1	105 km	12 km
Apr 8, 2000	8 km ENE of Townsend, Montana	M4.1	70 km	5 km
Aug 6, 2019	3 km NW of Manhattan, Montana	M4.1	55 km	5 km
Sep 3, 2016	16 km S of Whitehall, Montana	M4.0	117 km	8 km
Nov 10, 2000	14 km NE of Townsend, Montana	M4.0	71 km	2 km
Mar 6, 2009	18 km S of Whitehall, Montana	M4.0	118 km	12 km
Jul 14, 2019	11 km NNE of Manhattan, Montana	M4.0	47 km	6 km
Nov 6, 1997	4 km WSW of Springhill, Montana	M4.0	38 km	5 km
Mar 26, 1994	19 km NE of West Yellowstone, Montana	M3.9	135 km	9 km
Sep 18, 2022	22 km SSW of Mammoth, Wyoming	M3.9	133 km	11 km
Feb 6, 1999	24 km E of Townsend, Montana	M3.9	59 km	1 km
Sep 24, 1995	15 km S of Pony, Montana	M3.9	109 km	5 km
Jun 21, 2006	5 km SSW of Pony, Montana	M3.9	106 km	11 km

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

Tornado History

22 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 injury.

Date	Rating	Distance	Path	Fatalities
Jul 2, 2010	EF2	28 km	2.1 mi	0
Jul 10, 1965	EF2	93 km	2.0 mi	0
Jul 20, 1964	EF2	81 km	2.0 mi	0
Jun 5, 2012	EF1	63 km	2.8 mi	0
Jun 3, 1971	EF1	94 km	2.3 mi	0
Aug 22, 1965	EF1	55 km	1.5 mi	0
Jun 15, 1960	EF1	45 km	1.3 mi	0
Jun 27, 2019	EF0	93 km	0.4 mi	0
Aug 9, 2011	EF0	6 km	0.1 mi	0
Sep 9, 2010	EF0	63 km	0.3 mi	0
Jun 5, 2004	EF0	98 km	2.0 mi	0
Aug 14, 1999	EF0	100 km	5.0 mi	0
Jul 2, 1997	EF0	53 km	0.1 mi	0
Jul 2, 1997	EF0	53 km	0.1 mi	0
Jun 5, 1997	EF0	98 km	0.1 mi	0
Jun 15, 1996	EF0	59 km	2.0 mi	0
May 17, 1994	EF0	67 km	0.1 mi	0
Jun 12, 1992	EF0	79 km	0.1 mi	0
Aug 22, 1978	EF0	66 km	0.1 mi	0
Aug 22, 1978	EF0	58 km	0.1 mi	0

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

Nearby Volcanoes

1 volcano within 200 km. Closest: Yellowstone (173 km).

Name	Type	Elevation	Last Eruption	Distance
Yellowstone	Caldera(s)	2,805 m (9,203 ft)	-1350	173 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: DERBY (200,993 acres, 2006).

Year	Name	Acres Burned	Distance
2006	DERBY	200,993	79 km
2000	TOSTON-MAUDLOW	80,383	52 km
2021	WOODS CREEK	55,836	77 km
2003	HOBBLE	38,365	79 km
2001	FRIDLEY	27,575	58 km
2006	JUNGLE	23,846	60 km
2007	WH COMPLEX (WICKED CREEK)	22,195	81 km
2021	AMERICAN FORK	20,726	33 km
2012	BEAR TRAP 2	14,875	82 km
2006	BIG CREEK	13,424	70 km
2013	MINER PARADISE COMPLEX	12,210	77 km
2012	MILLIE	10,497	69 km
1985	SANDPOINT	10,439	91 km
1994	BLACK BUTTE	10,231	65 km
2015	EUSTIS	8,469	63 km
2020	BRIDGER FOOTHILLS	8,291	34 km
2015	COTTONWOOD GULCH	8,100	53 km
2021	TROUT CREEK	7,804	94 km
2012	PINE CREEK	7,707	54 km
2017	CHINN MA	7,029	45 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	21°F (-6°C)	0.8 in	Coldest
February	28°F (-2°C)	0.6 in	Driest
March	33°F (1°C)	1.2 in
April	42°F (5°C)	1.6 in
May	50°F (10°C)	3.0 in	Wettest
June	59°F (15°C)	2.8 in
July	66°F (19°C)	1.6 in	Warmest
August	65°F (18°C)	1.5 in
September	55°F (13°C)	1.8 in
October	45°F (7°C)	1.3 in
November	32°F (-0°C)	0.9 in
December	24°F (-4°C)	0.7 in

Wilsall has a seasonal temperature swing of 45°F / from 21°F in January to 66°F in July. Total annual precipitation is 17.8 inches, with May being the wettest month (3.0") and February the driest (0.6").

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