Weather & Climate in Herriman, UT

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

Herriman experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 26°F in January while summers reach 71°F in July. The area gets 316 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 12.5 inches (drier than the 38-inch national average). The area receives 33.6 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 4,980 feet.

Temperature

26°F Jan (-3°C) 71°F Jul (21°C)

Annual Average	47.6°F
	12% below US avg
January Average	26°F (-3°C)
July Average	71°F (21°C)
Sunny Days	316 days/yr

Geography

Elevation	4,980 ft (1,518 m)
Area	20.3 sq mi (52.5 km²)
Population Density	2,476/sq mi
Coordinates	40.4917°N, 112.0203°W
Timezone	America/Denver
County	Salt Lake County County
Nearest Airport	Salt Lake City International (SLC) 21 miles away

Precipitation & Snow

Annual Rainfall 12.5"

67% below US avg

Snowfall 33.6"

Wettest Month (Mar) 2.13"

Driest Month (Jul) 1.02"

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

507 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	29 km	12 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	30 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	29 km	11 km
May 5, 2024	16 km SW of Thatcher, Utah	M4.4	125 km	7 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	110 km	1 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	27 km	10 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	27 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	4 km	12 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	27 km	9 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	127 km	9 km
Mar 7, 2000	7 km N of Helper, Utah	M4.2	129 km	-3 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	116 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	29 km	7 km
Jun 3, 2009	5 km WNW of Riverside, Utah	M4.0	147 km	9 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	32 km	10 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	64 km	14 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	29 km	9 km
May 4, 2024	16 km SW of Thatcher, Utah	M3.9	125 km	6 km
Mar 18, 2020	6 km NE of Magna, Utah	M3.9	30 km	10 km
Feb 6, 1991	7 km WNW of Hiawatha, Utah	M3.8	135 km	5 km

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

Tornado History

47 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	29 km	4.3 mi	1
Aug 14, 1968	EF2	85 km	1.5 mi	0
Feb 9, 1965	EF2	26 km	0.1 mi	0
Jun 3, 1963	EF2	45 km	2.0 mi	0
Sep 2, 2021	EF1	41 km	2.1 mi	0
Sep 22, 2016	EF1	75 km	2.9 mi	0
Aug 20, 1998	EF1	93 km	0.1 mi	0
May 29, 1996	EF1	90 km	1.3 mi	0
Jun 2, 1993	EF1	39 km	1.0 mi	0
May 3, 1993	EF1	28 km	0.1 mi	0
Sep 23, 1992	EF1	66 km	2.0 mi	0
Jul 25, 1991	EF1	22 km	10.0 mi	0
Jul 8, 1989	EF1	16 km	0.2 mi	0
Mar 2, 1989	EF1	24 km	0.2 mi	0
Jan 10, 1989	EF1	15 km	0.2 mi	0
Dec 2, 1970	EF1	39 km	1.0 mi	0
Aug 14, 1968	EF1	33 km	0.1 mi	0
Apr 17, 1966	EF1	53 km	0.1 mi	0
Jul 9, 1965	EF1	40 km	0.4 mi	0
May 28, 2018	EF0	85 km	0.3 mi	0

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

Nearby Volcanoes

1 volcano within 200 km. Closest: Black Rock Desert (174 km).

Name	Type	Elevation	Last Eruption	Distance
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	174 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	83 km
2018	POLE CREEK	102,426	70 km
1999	RAILROAD	64,598	88 km
2012	WOOD HOLLOW	46,763	94 km
2012	DALLAS CANYON	43,386	80 km
2009	BIG POLE	41,579	55 km
2000	SALT LAKE DESERT COMPLEX (ARAGONITE)	39,825	81 km
1994	SIMPSON BT	36,917	77 km
1995	REDLAM	35,405	80 km
2017	DAVIS	35,071	60 km
1996	DAVIS KNOLL COMPLEX (DAVIS KNOLL)	34,843	62 km
1995	PUDDLE VALLEY	31,249	84 km
2018	COAL HOLLOW	30,239	87 km
2013	PATCH SPRINGS	29,562	53 km
2000	OLDROYD COMPLEX (MONA WEST)	28,774	74 km
2007	SALT CREEK	26,924	92 km
2007	MONARCH	25,046	85 km
2007	QUINCY	24,776	87 km
2012	FAUST	22,155	60 km
2005	DITTO	22,041	87 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	26°F (-3°C)	1.5 in	Coldest
February	30°F (-1°C)	1.7 in
March	37°F (3°C)	2.1 in	Wettest
April	44°F (7°C)	1.9 in
May	53°F (12°C)	1.9 in
June	62°F (17°C)	1.1 in
July	71°F (21°C)	1.0 in	Warmest, Driest
August	69°F (21°C)	1.1 in
September	60°F (15°C)	1.5 in
October	48°F (9°C)	1.8 in
November	35°F (2°C)	1.9 in
December	27°F (-3°C)	1.6 in

Herriman has a seasonal temperature swing of 44°F / from 26°F in January to 71°F in July. Total annual precipitation is 19.1 inches, with March being the wettest month (2.1") and July the driest (1.0").

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