Weather & Climate in West Valley City, UT

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

West Valley City experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 82°F in July. The area gets 312 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 44.7 inches. The area receives 109.2 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 4,344 feet.

Temperature

29°F Jan (-2°C) 82°F Jul (28°C)

Annual Average	51.8°F
	4% below US avg
January Average	29°F (-2°C)
July Average	82°F (28°C)
Sunny Days	312 days/yr

Geography

Elevation	4,344 ft (1,324 m)
Area	35.5 sq mi (92.0 km²)
Population Density	3,850/sq mi
Coordinates	40.6885°N, 112.0118°W
Timezone	America/Denver
County	Salt Lake County County
Nearest Airport	Salt Lake City International (SLC) 7 miles away

Precipitation & Snow

Annual Rainfall 44.7"

18% above US avg

Snowfall 109.2"

Wettest Month (May) 2.05"

Driest Month (Jul) 0.75"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	98.6 / 100
Social Vulnerability	10.6 / 100
Community Resilience	66.4 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Earthquake	Relatively High
Wildfire	Relatively High
Flood	Relatively Moderate
Hail	Relatively Low
Strong Wind	Relatively Moderate
Heat Wave	Relatively Moderate
Winter Weather	Very High
Lightning	Relatively High
Ice Storm	Very Low
Drought	Relatively Low
Cold Wave	Relatively Low
Landslide	Relatively Low
Coastal Flood	No Rating
Volcano	Very Low
Avalanche	Very High

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

Earthquake History

445 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	9 km	12 km
Apr 15, 2010	9 km NE of Randolph, Utah	M4.9	137 km	10 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	9 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	8 km	11 km
May 5, 2024	16 km SW of Thatcher, Utah	M4.4	105 km	7 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	132 km	1 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	7 km	10 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	9 km	9 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	6 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	26 km	12 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	147 km	9 km
Mar 7, 2000	7 km N of Helper, Utah	M4.2	144 km	-3 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	117 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	9 km	7 km
Jun 3, 2009	5 km WNW of Riverside, Utah	M4.0	125 km	9 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	11 km	10 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	9 km	9 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	73 km	14 km
May 4, 2024	16 km SW of Thatcher, Utah	M3.9	105 km	6 km
Sep 24, 2019	5 km ENE of Howell, Utah	M3.9	129 km	7 km

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

Tornado History

50 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 fatality, 96 injuries.

Date	Rating	Distance	Path	Fatalities
Aug 11, 1999	EF2	13 km	4.3 mi	1
Aug 14, 1968	EF2	63 km	1.5 mi	0
Feb 9, 1965	EF2	8 km	0.1 mi	0
Jun 3, 1963	EF2	24 km	2.0 mi	0
Sep 2, 2021	EF1	20 km	2.1 mi	0
Sep 22, 2016	EF1	53 km	2.9 mi	0
Aug 20, 1998	EF1	74 km	0.1 mi	0
May 29, 1996	EF1	68 km	1.3 mi	0
Jun 2, 1993	EF1	18 km	1.0 mi	0
May 3, 1993	EF1	26 km	0.1 mi	0
Sep 23, 1992	EF1	44 km	2.0 mi	0
Jul 25, 1991	EF1	23 km	10.0 mi	0
Jul 8, 1989	EF1	14 km	0.2 mi	0
Mar 2, 1989	EF1	8 km	0.2 mi	0
Jan 10, 1989	EF1	16 km	0.2 mi	0
Dec 2, 1970	EF1	49 km	1.0 mi	0
Aug 14, 1968	EF1	14 km	0.1 mi	0
Apr 17, 1966	EF1	70 km	0.1 mi	0
Jul 9, 1965	EF1	52 km	0.4 mi	0
May 28, 2018	EF0	96 km	0.3 mi	0

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

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 3.6 m (12 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1909	UTAH	Earthquake	3.6 m	—	136 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Black Rock Desert (196 km).

Name	Type	Elevation	Last Eruption	Distance
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	196 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: POLE CREEK (102,426 acres, 2018).

Year	Name	Acres Burned	Distance
2018	POLE CREEK	102,426	89 km
2012	DALLAS CANYON	43,386	79 km
2009	BIG POLE	41,579	55 km
2000	SALT LAKE DESERT COMPLEX (ARAGONITE)	39,825	79 km
1994	SIMPSON BT	36,917	92 km
1995	REDLAM	35,405	76 km
2017	DAVIS	35,071	74 km
1996	DAVIS KNOLL COMPLEX (DAVIS KNOLL)	34,843	75 km
1995	PUDDLE VALLEY	31,249	77 km
2013	PATCH SPRINGS	29,562	61 km
2000	OLDROYD COMPLEX (MONA WEST)	28,774	96 km
2007	MONARCH	25,046	75 km
2007	QUINCY	24,776	90 km
2012	FAUST	22,155	75 km
2017	CEDAR MOUNTAIN	21,388	79 km
2018	BALD MOUNTAIN	21,016	89 km
1998	TEKOI	19,933	77 km
2005	SALLY	19,726	88 km
1994	POSTHOLLOW	18,234	78 km
1998	SIMPSON SPRINGS	17,543	99 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	29°F (-2°C)	1.3 in	Coldest
February	34°F (1°C)	1.3 in
March	42°F (6°C)	1.8 in
April	50°F (10°C)	2.0 in
May	59°F (15°C)	2.1 in	Wettest
June	69°F (21°C)	0.9 in
July	82°F (28°C)	0.8 in	Warmest, Driest
August	76°F (25°C)	0.8 in
September	65°F (18°C)	1.4 in
October	53°F (11°C)	1.7 in
November	40°F (4°C)	1.6 in
December	31°F (-1°C)	1.3 in

West Valley City has a seasonal temperature swing of 53°F / from 29°F in January to 82°F in July. Total annual precipitation is 17.0 inches, with May being the wettest month (2.1") and July the driest (0.8").

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