Weather & Climate in West Mountain, UT

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

West Mountain experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 30°F in January while summers reach 77°F in July. The area gets 308 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 20.2 inches (drier than the 38-inch national average). The area receives 66.0 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 4,561 feet.

Temperature

30°F Jan (-1°C) 77°F Jul (25°C)

Annual Average	52.9°F
	2% below US avg
January Average	30°F (-1°C)
July Average	77°F (25°C)
Sunny Days	308 days/yr

Geography

Elevation	4,561 ft (1,390 m)
Area	9.5 sq mi (24.7 km²)
Population Density	130/sq mi
Coordinates	40.0518°N, 111.7834°W
Timezone	America/Denver
County	Utah County County
Nearest Airport	Salt Lake City International (SLC) 52 miles away

Precipitation & Snow

Annual Rainfall 20.2"

47% below US avg

Snowfall 66.0"

Wettest Month (May) 1.65"

Driest Month (Jun) 0.83"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	95.3 / 100
Social Vulnerability	10.6 / 100
Community Resilience	83.2 / 100

Hazard Breakdown

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

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

Earthquake History

663 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.7.

Mar 18, 2020	5 km NNE of Magna, Utah	M5.7	82 km	12 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	82 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	81 km	11 km
Jun 24, 1992	30 km WSW of Emery, Utah	M4.3	142 km	5 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	61 km	1 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	80 km	10 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	79 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	50 km	12 km
Jul 19, 2001	31 km NNE of Fremont, Utah	M4.2	148 km	7 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	79 km	9 km
Mar 7, 2000	7 km N of Helper, Utah	M4.2	87 km	-3 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	74 km	9 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	108 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	81 km	7 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	50 km	14 km
Jan 6, 1996	15 km SE of Castle Dale, Utah	M3.9	129 km	6 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	84 km	10 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	81 km	9 km
Mar 18, 2020	6 km NE of Magna, Utah	M3.9	82 km	10 km
Oct 11, 1999	2 km W of Glenwood, Utah	M3.8	144 km	9 km

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

Tornado History

40 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 fatality, 82 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 19, 2022	EF2	91 km	2.1 mi	0
Sep 8, 2002	EF2	88 km	2.7 mi	0
Aug 11, 1999	EF2	76 km	4.3 mi	1
Feb 9, 1965	EF2	79 km	0.1 mi	0
Jun 3, 1963	EF2	93 km	2.0 mi	0
Jun 16, 1955	EF2	92 km	2.7 mi	0
Sep 2, 2021	EF1	90 km	2.1 mi	0
Jun 2, 1993	EF1	87 km	1.0 mi	0
May 3, 1993	EF1	77 km	0.1 mi	0
Jul 25, 1991	EF1	71 km	10.0 mi	0
Jul 8, 1989	EF1	62 km	0.2 mi	0
Mar 2, 1989	EF1	77 km	0.2 mi	0
Jan 10, 1989	EF1	59 km	0.2 mi	0
Dec 2, 1970	EF1	42 km	1.0 mi	0
Aug 14, 1968	EF1	80 km	0.1 mi	0
Apr 17, 1966	EF1	21 km	0.1 mi	0
Jul 9, 1965	EF1	40 km	0.4 mi	0
May 28, 2018	EF0	56 km	0.3 mi	0
Sep 7, 2013	EF0	38 km	0.1 mi	0
Jun 25, 2005	EF0	62 km	0.5 mi	0

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

Nearby Volcanoes

1 volcano within 200 km. Closest: Black Rock Desert (135 km).

Name	Type	Elevation	Last Eruption	Distance
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	135 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: LEAMINGTON COMPLEX (WASH) (161,203 acres, 1996).

Year	Name	Acres Burned	Distance
1996	LEAMINGTON COMPLEX (WASH)	161,203	49 km
2012	CLAY SPRINGS	107,391	80 km
2018	POLE CREEK	102,426	23 km
2020	CANAL	74,897	68 km
2018	DOLLAR RIDGE	69,817	77 km
1999	RAILROAD	64,598	54 km
2012	WOOD HOLLOW	46,763	42 km
2012	SEELEY	44,626	78 km
2009	BIG POLE	41,579	96 km
1994	SIMPSON BT	36,917	84 km
2017	DAVIS	35,071	75 km
1996	DAVIS KNOLL COMPLEX (DAVIS KNOLL)	34,843	77 km
2018	COAL HOLLOW	30,239	43 km
2013	PATCH SPRINGS	29,562	83 km
2000	OLDROYD COMPLEX (MONA WEST)	28,774	30 km
1996	LEAMINGTON COMPLEX (LEAMINGTON)	28,159	71 km
2007	SALT CREEK	26,924	39 km
2012	FAUST	22,155	71 km
2005	DITTO	22,041	93 km
2018	BALD MOUNTAIN	21,016	16 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	30°F (-1°C)	1.4 in
February	32°F (-0°C)	1.4 in
March	40°F (5°C)	1.6 in
April	48°F (9°C)	1.6 in
May	56°F (13°C)	1.7 in	Wettest
June	65°F (18°C)	0.8 in	Driest
July	77°F (25°C)	0.8 in	Warmest
August	71°F (21°C)	0.9 in
September	62°F (16°C)	1.3 in
October	50°F (10°C)	1.7 in
November	38°F (3°C)	1.6 in
December	28°F (-2°C)	1.3 in	Coldest

West Mountain has a seasonal temperature swing of 49°F / from 28°F in December to 77°F in July. Total annual precipitation is 16.0 inches, with May being the wettest month (1.7") and June the driest (0.8").

View full profile of West Mountain, UT →