Weather & Climate in American Fork, UT

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

American Fork experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 32°F in January while summers reach 79°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 16.4 inches (drier than the 38-inch national average). The area receives 41.4 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 4,616 feet.

Temperature

32°F Jan (0°C) 79°F Jul (26°C)

Annual Average	54.4°F
	1% above US avg
January Average	32°F (0°C)
July Average	79°F (26°C)
Sunny Days	316 days/yr

Geography

Elevation	4,616 ft (1,407 m)
Area	9.2 sq mi (23.8 km²)
Population Density	3,100/sq mi
Coordinates	40.3779°N, 111.7951°W
Timezone	America/Denver
County	Utah County County
Nearest Airport	Salt Lake City International (SLC) 30 miles away

Precipitation & Snow

Annual Rainfall 16.4"

57% below US avg

Snowfall 41.4"

Wettest Month (Mar) 1.93"

Driest Month (Jun) 1.02"

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

529 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	48 km	12 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	48 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	47 km	11 km
May 5, 2024	16 km SW of Thatcher, Utah	M4.4	143 km	7 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	97 km	1 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	46 km	10 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	45 km	9 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	47 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	23 km	12 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	109 km	9 km
Mar 7, 2000	7 km N of Helper, Utah	M4.2	107 km	-3 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	98 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	48 km	7 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	42 km	14 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	48 km	9 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	50 km	10 km
May 4, 2024	16 km SW of Thatcher, Utah	M3.9	143 km	6 km
Mar 18, 2020	6 km NE of Magna, Utah	M3.9	47 km	10 km
Feb 6, 1991	7 km WNW of Hiawatha, Utah	M3.8	114 km	5 km
Feb 5, 1998	7 km N of Helper, Utah	M3.8	106 km	-2 km

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

Tornado History

45 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 fatality, 94 injuries.

Date	Rating	Distance	Path	Fatalities
Aug 11, 1999	EF2	40 km	4.3 mi	1
Aug 14, 1968	EF2	100 km	1.5 mi	0
Feb 9, 1965	EF2	46 km	0.1 mi	0
Jun 3, 1963	EF2	56 km	2.0 mi	0
Sep 2, 2021	EF1	55 km	2.1 mi	0
Sep 22, 2016	EF1	89 km	2.9 mi	0
Aug 20, 1998	EF1	97 km	0.1 mi	0
Jun 2, 1993	EF1	51 km	1.0 mi	0
May 3, 1993	EF1	51 km	0.1 mi	0
Sep 23, 1992	EF1	81 km	2.0 mi	0
Jul 25, 1991	EF1	45 km	10.0 mi	0
Jul 8, 1989	EF1	26 km	0.2 mi	0
Mar 2, 1989	EF1	44 km	0.2 mi	0
Jan 10, 1989	EF1	24 km	0.2 mi	0
Dec 2, 1970	EF1	18 km	1.0 mi	0
Aug 14, 1968	EF1	44 km	0.1 mi	0
Apr 17, 1966	EF1	31 km	0.1 mi	0
Jul 9, 1965	EF1	19 km	0.4 mi	0
May 28, 2018	EF0	62 km	0.3 mi	0
Sep 7, 2013	EF0	3 km	0.1 mi	0

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

Nearby Volcanoes

1 volcano within 200 km. Closest: Black Rock Desert (168 km).

Name	Type	Elevation	Last Eruption	Distance
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	168 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	77 km
2018	POLE CREEK	102,426	49 km
2018	DOLLAR RIDGE	69,817	83 km
1999	RAILROAD	64,598	83 km
2012	WOOD HOLLOW	46,763	76 km
2009	BIG POLE	41,579	77 km
1994	SIMPSON BT	36,917	89 km
2017	DAVIS	35,071	73 km
1996	DAVIS KNOLL COMPLEX (DAVIS KNOLL)	34,843	75 km
2018	COAL HOLLOW	30,239	65 km
2013	PATCH SPRINGS	29,562	72 km
2000	OLDROYD COMPLEX (MONA WEST)	28,774	63 km
2007	SALT CREEK	26,924	75 km
2012	FAUST	22,155	72 km
2005	DITTO	22,041	98 km
2018	BALD MOUNTAIN	21,016	51 km
1998	TEKOI	19,933	90 km
1996	LEAMINGTON COMPLEX (EAST SAGE)	18,360	86 km
1994	POSTHOLLOW	18,234	84 km
1998	SIMPSON SPRINGS	17,543	94 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (0°C)	1.7 in
February	31°F (-1°C)	1.8 in
March	37°F (3°C)	1.9 in	Wettest
April	44°F (7°C)	1.8 in
May	53°F (12°C)	1.8 in
June	63°F (17°C)	1.0 in	Driest
July	79°F (26°C)	1.0 in	Warmest
August	69°F (21°C)	1.2 in
September	60°F (16°C)	1.5 in
October	49°F (9°C)	1.8 in
November	36°F (2°C)	1.9 in
December	28°F (-2°C)	1.7 in	Coldest

American Fork has a seasonal temperature swing of 51°F / from 28°F in December to 79°F in July. Total annual precipitation is 19.0 inches, with March being the wettest month (1.9") and June the driest (1.0").

View full profile of American Fork, UT →