Weather & Climate in Fairfield, UT

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

Fairfield 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 4,850 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	4,850 ft (1,478 m)
Area	26.1 sq mi (67.7 km²)
Population Density	6/sq mi
Coordinates	40.2360°N, 112.0752°W
Timezone	America/Denver
County	Utah County County
Nearest Airport	Salt Lake City International (SLC) 39 miles away

Precipitation & Snow

Annual Rainfall 12.5"

67% below US avg

Snowfall 33.6"

Wettest Month (May) 1.54"

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

518 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	57 km	12 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	58 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	57 km	11 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	83 km	1 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	56 km	10 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	55 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	25 km	12 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	54 km	9 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	104 km	9 km
Mar 7, 2000	7 km N of Helper, Utah	M4.2	118 km	-3 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	124 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	57 km	7 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	57 km	9 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	66 km	14 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	60 km	10 km
Mar 18, 2020	6 km NE of Magna, Utah	M3.9	58 km	10 km
Feb 5, 1998	7 km N of Helper, Utah	M3.8	118 km	-2 km
Feb 6, 1991	7 km WNW of Hiawatha, Utah	M3.8	117 km	5 km
Mar 18, 2020	5 km NNE of Magna, Utah	M3.7	57 km	10 km
Feb 15, 2019	3 km SSW of Bluffdale, Utah	M3.7	28 km	9 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Aug 11, 1999	EF2	58 km	4.3 mi	1
Feb 9, 1965	EF2	54 km	0.1 mi	0
Jun 3, 1963	EF2	74 km	2.0 mi	0
Sep 2, 2021	EF1	70 km	2.1 mi	0
Jun 2, 1993	EF1	67 km	1.0 mi	0
May 3, 1993	EF1	47 km	0.1 mi	0
Sep 23, 1992	EF1	94 km	2.0 mi	0
Jul 25, 1991	EF1	41 km	10.0 mi	0
Jul 8, 1989	EF1	43 km	0.2 mi	0
Mar 2, 1989	EF1	52 km	0.2 mi	0
Jan 10, 1989	EF1	42 km	0.2 mi	0
Dec 2, 1970	EF1	46 km	1.0 mi	0
Aug 14, 1968	EF1	62 km	0.1 mi	0
Apr 17, 1966	EF1	43 km	0.1 mi	0
Jul 9, 1965	EF1	45 km	0.4 mi	0
May 28, 2018	EF0	81 km	0.3 mi	0
Sep 7, 2013	EF0	32 km	0.1 mi	0
Aug 2, 2005	EF0	88 km	5.0 mi	0
Jun 25, 2005	EF0	93 km	0.5 mi	0
May 30, 2005	EF0	27 km	0.2 mi	0

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

Nearby Volcanoes

1 volcano within 200 km. Closest: Black Rock Desert (145 km).

Name	Type	Elevation	Last Eruption	Distance
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	145 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	54 km
2012	CLAY SPRINGS	107,391	91 km
2018	POLE CREEK	102,426	54 km
2020	CANAL	74,897	78 km
1999	RAILROAD	64,598	59 km
2012	WOOD HOLLOW	46,763	73 km
2012	DALLAS CANYON	43,386	86 km
2009	BIG POLE	41,579	64 km
2000	SALT LAKE DESERT COMPLEX (ARAGONITE)	39,825	88 km
1994	SIMPSON BT	36,917	61 km
1995	REDLAM	35,405	89 km
2017	DAVIS	35,071	48 km
1996	DAVIS KNOLL COMPLEX (DAVIS KNOLL)	34,843	49 km
1995	PUDDLE VALLEY	31,249	98 km
2018	COAL HOLLOW	30,239	74 km
2013	PATCH SPRINGS	29,562	52 km
2000	OLDROYD COMPLEX (MONA WEST)	28,774	46 km
1996	LEAMINGTON COMPLEX (LEAMINGTON)	28,159	83 km
2007	SALT CREEK	26,924	68 km
2007	QUINCY	24,776	88 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	26°F (-3°C)	1.1 in	Coldest
February	32°F (-0°C)	1.1 in
March	40°F (4°C)	1.4 in
April	47°F (8°C)	1.4 in
May	55°F (13°C)	1.5 in	Wettest
June	66°F (19°C)	0.8 in	Driest
July	71°F (21°C)	0.8 in
August	71°F (22°C)	1.0 in	Warmest
September	62°F (17°C)	1.2 in
October	50°F (10°C)	1.5 in
November	37°F (3°C)	1.4 in
December	27°F (-3°C)	1.0 in

Fairfield has a seasonal temperature swing of 45°F / from 26°F in January to 71°F in August. Total annual precipitation is 14.3 inches, with May being the wettest month (1.5") and June the driest (0.8").

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