Weather & Climate in Mountain Green, UT

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

Mountain Green experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 28°F in January while summers reach 78°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 26.2 inches (drier than the 38-inch national average). The area receives 22.8 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 4,926 feet.

Temperature

28°F Jan (-2°C) 78°F Jul (25°C)

Annual Average	50.7°F
	6% below US avg
January Average	28°F (-2°C)
July Average	78°F (25°C)
Sunny Days	308 days/yr

Geography

Elevation	4,926 ft (1,501 m)
Area	5.5 sq mi (14.1 km²)
Population Density	691/sq mi
Coordinates	41.1477°N, 111.7876°W
Timezone	America/Denver
County	Weber County County
Nearest Airport	Salt Lake City International (SLC) 27 miles away

Precipitation & Snow

Annual Rainfall 26.2"

31% below US avg

Snowfall 22.8"

Wettest Month (Apr) 2.13"

Driest Month (Jul) 0.94"

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

383 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	50 km	12 km
Apr 15, 2010	9 km NE of Randolph, Utah	M4.9	85 km	10 km
Nov 4, 1992	67 km ENE of Montello, Nevada	M4.7	146 km	9 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	49 km	9 km
Mar 18, 2020	5 km NE of Magna, Utah	M4.6	50 km	11 km
May 5, 2024	16 km SW of Thatcher, Utah	M4.4	71 km	7 km
Jun 30, 2006	12 km WSW of Georgetown, Idaho	M4.3	145 km	10 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	51 km	10 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	51 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	80 km	12 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	54 km	9 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	121 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	51 km	7 km
Jun 3, 2009	5 km WNW of Riverside, Utah	M4.0	81 km	9 km
Jul 14, 2006	14 km WSW of Georgetown, Idaho	M4.0	144 km	6 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	51 km	9 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	47 km	10 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	101 km	14 km
May 4, 2024	16 km SW of Thatcher, Utah	M3.9	71 km	6 km
Sep 24, 2019	5 km ENE of Howell, Utah	M3.9	90 km	7 km

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

Tornado History

53 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	47 km	4.3 mi	1
Aug 14, 1968	EF2	27 km	1.5 mi	0
Feb 9, 1965	EF2	54 km	0.1 mi	0
Jun 3, 1963	EF2	31 km	2.0 mi	0
Sep 2, 2021	EF1	34 km	2.1 mi	0
Sep 22, 2016	EF1	19 km	2.9 mi	0
Aug 20, 1998	EF1	27 km	0.1 mi	0
May 29, 1996	EF1	23 km	1.3 mi	0
Jun 2, 1993	EF1	37 km	1.0 mi	0
May 3, 1993	EF1	73 km	0.1 mi	0
Sep 23, 1992	EF1	25 km	2.0 mi	0
Jul 25, 1991	EF1	74 km	10.0 mi	0
Sep 17, 1989	EF1	94 km	0.2 mi	0
Jul 8, 1989	EF1	62 km	0.2 mi	0
Mar 2, 1989	EF1	56 km	0.2 mi	0
Jan 10, 1989	EF1	64 km	0.2 mi	0
May 29, 1987	EF1	93 km	0.2 mi	0
May 6, 1981	EF1	82 km	0.5 mi	0
Dec 2, 1970	EF1	85 km	1.0 mi	0
Aug 14, 1968	EF1	43 km	0.1 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	—	105 km

Source: NOAA/NCEI Historical Tsunami Database.

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	95 km
2001	UNNAMED	38,647	75 km
1995	PUDDLE VALLEY	31,249	99 km
2007	MONARCH	25,046	92 km
2016	BROAD MOUTH	21,009	91 km
2005	SALLY	19,726	92 km
1996	SILVER HILL	17,137	90 km
2007	KIMBELL	16,949	86 km
2000	CASTLEROCK	16,718	69 km
1996	GOLDEN SPIKE	16,186	78 km
2011	LAKESIDE	16,165	89 km
2016	WEST ANTELOPE	15,483	44 km
1999	BRIDGER BA	15,227	94 km
2018	GORING	14,538	92 km
2020	TABBY CANYON	14,330	69 km
2002	GARDEN VALLEY COMPLEX (EAST FORK)	14,245	94 km
1994	DRY CANYON 2	10,927	70 km
2017	SALLY	10,840	92 km
2018	LAKESIDE	10,609	90 km
1984	RAVEN	9,848	90 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	28°F (-2°C)	1.8 in
February	27°F (-3°C)	1.7 in
March	35°F (2°C)	2.0 in
April	43°F (6°C)	2.1 in	Wettest
May	51°F (11°C)	2.1 in
June	60°F (16°C)	1.2 in
July	78°F (25°C)	0.9 in	Warmest, Driest
August	66°F (19°C)	1.0 in
September	57°F (14°C)	1.6 in
October	46°F (8°C)	1.9 in
November	34°F (1°C)	1.9 in
December	24°F (-4°C)	1.7 in	Coldest

Mountain Green has a seasonal temperature swing of 54°F / from 24°F in December to 78°F in July. Total annual precipitation is 20.0 inches, with April being the wettest month (2.1") and July the driest (0.9").

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