Weather & Climate in Mantua, UT

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

Mantua experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 24°F in January while summers reach 70°F in July. The area gets 308 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 28.2 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 5,167 feet.

Temperature

24°F Jan (-4°C) 70°F Jul (21°C)

Annual Average	46.1°F
	15% below US avg
January Average	24°F (-4°C)
July Average	70°F (21°C)
Sunny Days	308 days/yr

Geography

Elevation	5,167 ft (1,575 m)
Area	5.6 sq mi (14.5 km²)
Population Density	336/sq mi
Coordinates	41.4980°N, 111.9357°W
Timezone	America/Denver
County	Weber County County
Nearest Airport	Brigham City Regional (BMC) 8 miles away

Precipitation & Snow

Annual Rainfall 28.2"

26% below US avg

Wettest Month (May) 2.09"

Driest Month (Jul) 1.06"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	87.0 / 100
Social Vulnerability	10.6 / 100
Community Resilience	86.6 / 100

Hazard Breakdown

Tornado	Relatively Low
Earthquake	Relatively Moderate
Wildfire	Relatively Moderate
Flood	Relatively Low
Hail	Very Low
Strong Wind	Relatively Moderate
Heat Wave	Relatively Moderate
Winter Weather	Relatively High
Lightning	Relatively High
Ice Storm	Relatively Low
Drought	Relatively Low
Cold Wave	Relatively Low
Landslide	Very Low
Avalanche	Relatively High

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

Earthquake History

1,087 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	84 km	12 km
Sep 2, 2017	12 km E of Soda Springs, Idaho	M5.3	134 km	10 km
Sep 10, 2017	9 km NNW of Georgetown, Idaho	M5.0	126 km	10 km
Apr 15, 2010	9 km NE of Randolph, Utah	M4.9	74 km	10 km
Sep 10, 2017	12 km ESE of Soda Springs, Idaho	M4.7	129 km	5 km
Sep 3, 2017	10 km E of Soda Springs, Idaho	M4.7	132 km	8 km
Sep 11, 2017	9 km NW of Georgetown, Idaho	M4.7	124 km	8 km
Sep 3, 2017	15 km ESE of Soda Springs, Idaho	M4.7	131 km	10 km
Nov 4, 1992	67 km ENE of Montello, Nevada	M4.7	127 km	9 km
Sep 6, 2017	11 km NNW of Georgetown, Idaho	M4.6	126 km	10 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	83 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	84 km	11 km
Feb 7, 1994	4 km SW of Fairview, Wyoming	M4.5	150 km	5 km
Sep 4, 2017	13 km ESE of Soda Springs, Idaho	M4.5	131 km	6 km
Jan 26, 2018	5 km NNW of Georgetown, Idaho	M4.4	124 km	10 km
May 5, 2024	16 km SW of Thatcher, Utah	M4.4	41 km	7 km
Sep 5, 2017	13 km NNW of Georgetown, Idaho	M4.3	129 km	6 km
Sep 11, 2017	9 km NNW of Georgetown, Idaho	M4.3	125 km	2 km
Sep 5, 2017	12 km NNW of Georgetown, Idaho	M4.3	128 km	10 km
Sep 5, 2017	12 km NNW of Georgetown, Idaho	M4.3	127 km	3 km

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

Tornado History

52 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	86 km	4.3 mi	1
Aug 14, 1968	EF2	30 km	1.5 mi	0
Feb 9, 1965	EF2	88 km	0.1 mi	0
Jun 3, 1963	EF2	69 km	2.0 mi	0
Sep 2, 2021	EF1	71 km	2.1 mi	0
Sep 22, 2016	EF1	38 km	2.9 mi	0
Aug 20, 1998	EF1	49 km	0.1 mi	0
May 29, 1996	EF1	22 km	1.3 mi	0
Jun 2, 1993	EF1	74 km	1.0 mi	0
Sep 23, 1992	EF1	48 km	2.0 mi	0
Sep 17, 1989	EF1	54 km	0.2 mi	0
Jul 8, 1989	EF1	100 km	0.2 mi	0
Mar 2, 1989	EF1	90 km	0.2 mi	0
May 29, 1987	EF1	54 km	0.2 mi	0
May 21, 1986	EF1	77 km	5.0 mi	0
Jun 30, 1982	EF1	67 km	1.2 mi	0
May 6, 1981	EF1	42 km	0.5 mi	0
Aug 14, 1968	EF1	81 km	0.1 mi	0
Jun 23, 1965	EF1	65 km	0.6 mi	0
May 25, 1954	EF1	62 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	—	72 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Wapi Lava Field (187 km).

Name	Type	Elevation	Last Eruption	Distance
Wapi Lava Field	Shield	1,604 m (5,262 ft)	-300	187 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: STONE 2 (50,677 acres, 2006).

Year	Name	Acres Burned	Distance
2006	STONE 2	50,677	99 km
2001	UNNAMED	38,647	49 km
1994	ELEVATOR	31,854	66 km
2013	STATE	31,011	68 km
2007	MONARCH	25,046	99 km
2016	BROAD MOUTH	21,009	51 km
2005	SALLY	19,726	90 km
2000	CASTLEROCK	16,718	87 km
1996	GOLDEN SPIKE	16,186	52 km
2007	CLEVELAND	16,172	91 km
2011	LAKESIDE	16,165	99 km
2016	WEST ANTELOPE	15,483	68 km
1999	BRIDGER BA	15,227	87 km
2018	GORING	14,538	53 km
2018	NORTH EDEN	14,398	89 km
2020	TABBY CANYON	14,330	87 km
2017	WILDCAT	13,100	99 km
2000	TAYLOR	12,633	83 km
1988	METCALF	11,946	94 km
1994	DRY CANYON 2	10,927	57 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	24°F (-4°C)	1.7 in
February	25°F (-4°C)	1.7 in
March	32°F (-0°C)	2.0 in
April	39°F (4°C)	2.1 in
May	48°F (9°C)	2.1 in	Wettest
June	57°F (14°C)	1.3 in
July	70°F (21°C)	1.1 in	Warmest, Driest
August	64°F (18°C)	1.1 in
September	56°F (13°C)	1.5 in
October	45°F (7°C)	1.8 in
November	32°F (-0°C)	1.9 in
December	23°F (-5°C)	1.7 in	Coldest

Mantua has a seasonal temperature swing of 47°F / from 23°F in December to 70°F in July. Total annual precipitation is 19.9 inches, with May being the wettest month (2.1") and July the driest (1.1").

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