Weather & Climate in South Willard, UT

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

South Willard experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 29°F in January while summers reach 78°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 18.8 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 4,278 feet.

Temperature

29°F Jan (-2°C) 78°F Jul (26°C)

Annual Average	52.7°F
	2% below US avg
January Average	29°F (-2°C)
July Average	78°F (26°C)
Sunny Days	316 days/yr

Geography

Elevation	4,278 ft (1,304 m)
Area	5.8 sq mi (15.1 km²)
Population Density	246/sq mi
Coordinates	41.3583°N, 112.0409°W
Timezone	America/Denver
County	Davis County County
Nearest Airport	Brigham City Regional (BMC) 14 miles away

Precipitation & Snow

Annual Rainfall 18.8"

51% below US avg

Wettest Month (May) 2.20"

Driest Month (Jul) 0.79"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	87.8 / 100
Social Vulnerability	10.6 / 100
Community Resilience	97.9 / 100

Hazard Breakdown

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

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

Earthquake History

860 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	68 km	12 km
Sep 10, 2017	9 km NNW of Georgetown, Idaho	M5.0	144 km	10 km
Apr 15, 2010	9 km NE of Randolph, Utah	M4.9	88 km	10 km
Sep 11, 2017	9 km NW of Georgetown, Idaho	M4.7	141 km	8 km
Sep 10, 2017	12 km ESE of Soda Springs, Idaho	M4.7	147 km	5 km
Sep 3, 2017	10 km E of Soda Springs, Idaho	M4.7	150 km	8 km
Sep 3, 2017	15 km ESE of Soda Springs, Idaho	M4.7	149 km	10 km
Nov 4, 1992	67 km ENE of Montello, Nevada	M4.7	120 km	9 km
Sep 6, 2017	11 km NNW of Georgetown, Idaho	M4.6	144 km	10 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	67 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	68 km	11 km
Sep 4, 2017	13 km ESE of Soda Springs, Idaho	M4.5	149 km	6 km
Jan 26, 2018	5 km NNW of Georgetown, Idaho	M4.4	141 km	10 km
May 5, 2024	16 km SW of Thatcher, Utah	M4.4	40 km	7 km
Sep 11, 2017	9 km NNW of Georgetown, Idaho	M4.3	142 km	2 km
Sep 5, 2017	13 km NNW of Georgetown, Idaho	M4.3	146 km	6 km
Sep 5, 2017	12 km NNW of Georgetown, Idaho	M4.3	144 km	3 km
Sep 5, 2017	12 km NNW of Georgetown, Idaho	M4.3	146 km	10 km
Jun 30, 2006	12 km WSW of Georgetown, Idaho	M4.3	127 km	10 km
Sep 6, 2017	13 km ESE of Soda Springs, Idaho	M4.2	146 km	1 km

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

Tornado History

55 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	71 km	4.3 mi	1
Aug 14, 1968	EF2	13 km	1.5 mi	0
Feb 9, 1965	EF2	71 km	0.1 mi	0
Jun 3, 1963	EF2	55 km	2.0 mi	0
Sep 2, 2021	EF1	57 km	2.1 mi	0
Sep 22, 2016	EF1	22 km	2.9 mi	0
Aug 20, 1998	EF1	49 km	0.1 mi	0
May 29, 1996	EF1	9 km	1.3 mi	0
Jun 2, 1993	EF1	60 km	1.0 mi	0
May 3, 1993	EF1	85 km	0.1 mi	0
Sep 23, 1992	EF1	31 km	2.0 mi	0
Jul 25, 1991	EF1	88 km	10.0 mi	0
Sep 17, 1989	EF1	70 km	0.2 mi	0
Jul 8, 1989	EF1	85 km	0.2 mi	0
Mar 2, 1989	EF1	73 km	0.2 mi	0
Jan 10, 1989	EF1	88 km	0.2 mi	0
May 29, 1987	EF1	71 km	0.2 mi	0
May 21, 1986	EF1	88 km	5.0 mi	0
Jun 30, 1982	EF1	84 km	1.2 mi	0
May 6, 1981	EF1	57 km	0.5 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	—	74 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Wapi Lava Field (195 km).

Name	Type	Elevation	Last Eruption	Distance
Wapi Lava Field	Shield	1,604 m (5,262 ft)	-300	195 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: BIG POLE (41,579 acres, 2009).

Year	Name	Acres Burned	Distance
2009	BIG POLE	41,579	99 km
2001	UNNAMED	38,647	44 km
1994	ELEVATOR	31,854	76 km
1995	PUDDLE VALLEY	31,249	92 km
2013	STATE	31,011	79 km
2007	MONARCH	25,046	82 km
2016	BROAD MOUTH	21,009	61 km
2005	SALLY	19,726	76 km
1996	SILVER HILL	17,137	83 km
2007	KIMBELL	16,949	90 km
2000	CASTLEROCK	16,718	69 km
1996	GOLDEN SPIKE	16,186	48 km
2011	LAKESIDE	16,165	82 km
2016	WEST ANTELOPE	15,483	51 km
2006	SCORPIO	14,887	100 km
2000	HOGUP	14,688	98 km
2018	GORING	14,538	61 km
2020	TABBY CANYON	14,330	69 km
2017	WILDCAT	13,100	98 km
2000	TAYLOR	12,633	91 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	29°F (-2°C)	1.7 in
February	31°F (-1°C)	1.6 in
March	40°F (4°C)	1.7 in
April	48°F (9°C)	1.9 in
May	57°F (14°C)	2.2 in	Wettest
June	66°F (19°C)	1.2 in
July	78°F (26°C)	0.8 in	Warmest, Driest
August	72°F (22°C)	0.9 in
September	62°F (17°C)	1.5 in
October	50°F (10°C)	1.8 in
November	38°F (3°C)	1.6 in
December	28°F (-2°C)	1.5 in	Coldest

South Willard has a seasonal temperature swing of 50°F / from 28°F in December to 78°F in July. Total annual precipitation is 18.3 inches, with May being the wettest month (2.2") and July the driest (0.8").

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