Weather & Climate in East Basin, UT

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

East Basin has a cool climate with an average annual temperature of 45°F (7°C). Winters average 24°F in January while summers reach 68°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 72.2 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 6,509 feet.

Temperature

24°F Jan (-4°C) 68°F Jul (20°C)

Annual Average	45.2°F
	16% below US avg
January Average	24°F (-4°C)
July Average	68°F (20°C)
Sunny Days	316 days/yr

Geography

Elevation	6,509 ft (1,984 m)
Area	9.0 sq mi (23.3 km²)
Population Density	401/sq mi
Coordinates	40.7368°N, 111.4691°W
Timezone	America/Denver
County	Salt Lake County County
Nearest Airport	Salt Lake City International (SLC) 27 miles away

Precipitation & Snow

Annual Rainfall 16.4"

57% below US avg

Snowfall 72.2"

Wettest Month (Nov) 1.73"

Driest Month (Jun) 1.10"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	98.6 / 100
Social Vulnerability	10.6 / 100
Community Resilience	66.4 / 100

Hazard Breakdown

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

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

Earthquake History

464 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	51 km	12 km
Apr 15, 2010	9 km NE of Randolph, Utah	M4.9	113 km	10 km
Mar 18, 2020	6 km NNE of Magna, Utah	M4.6	51 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	123 km	7 km
Apr 17, 2003	6 km SSW of Levan, Utah	M4.2	142 km	1 km
Apr 16, 2020	4 km NE of Magna, Utah	M4.2	50 km	10 km
Mar 18, 2020	1 km NNW of Magna, Utah	M4.2	54 km	9 km
Mar 16, 1992	6 km S of Herriman, Utah	M4.2	58 km	12 km
Apr 15, 2020	4 km NE of Magna, Utah	M4.2	50 km	9 km
Jun 29, 2014	6 km SE of Spring City, Utah	M4.2	144 km	9 km
Mar 7, 2000	7 km N of Helper, Utah	M4.2	122 km	-3 km
May 25, 2016	15 km NNE of Tabiona, Utah	M4.0	74 km	16 km
Mar 18, 2020	4 km NNE of Magna, Utah	M4.0	52 km	7 km
Jun 3, 2009	5 km WNW of Riverside, Utah	M4.0	134 km	9 km
Mar 18, 2020	4 km NNE of Magna, Utah	M3.9	52 km	9 km
May 1, 2025	4 km WNW of Independence, Utah	M3.9	49 km	14 km
Mar 23, 2020	8 km NNE of Magna, Utah	M3.9	49 km	10 km
May 4, 2024	16 km SW of Thatcher, Utah	M3.9	123 km	6 km
Sep 24, 2019	5 km ENE of Howell, Utah	M3.9	143 km	7 km

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

Tornado History

49 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	34 km	4.3 mi	1
Aug 14, 1968	EF2	77 km	1.5 mi	0
Feb 9, 1965	EF2	53 km	0.1 mi	0
Jun 3, 1963	EF2	38 km	2.0 mi	0
Sep 2, 2021	EF1	41 km	2.1 mi	0
Sep 22, 2016	EF1	66 km	2.9 mi	0
Aug 20, 1998	EF1	54 km	0.1 mi	0
May 29, 1996	EF1	75 km	1.3 mi	0
Jun 2, 1993	EF1	39 km	1.0 mi	0
May 3, 1993	EF1	71 km	0.1 mi	0
Sep 23, 1992	EF1	63 km	2.0 mi	0
Jul 25, 1991	EF1	68 km	10.0 mi	0
Jul 8, 1989	EF1	39 km	0.2 mi	0
Mar 2, 1989	EF1	53 km	0.2 mi	0
Jan 10, 1989	EF1	39 km	0.2 mi	0
Dec 2, 1970	EF1	39 km	1.0 mi	0
Aug 14, 1968	EF1	35 km	0.1 mi	0
Apr 17, 1966	EF1	66 km	0.1 mi	0
Jul 9, 1965	EF1	42 km	0.4 mi	0
Jun 23, 1965	EF1	89 km	0.6 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: EAST FORK (106,432 acres, 2020).

Year	Name	Acres Burned	Distance
2020	EAST FORK	106,432	75 km
2018	POLE CREEK	102,426	84 km
2018	DOLLAR RIDGE	69,817	86 km
2018	COAL HOLLOW	30,239	91 km
2018	BALD MOUNTAIN	21,016	92 km
2007	KIMBELL	16,949	94 km
2000	CASTLEROCK	16,718	88 km
2016	WEST ANTELOPE	15,483	66 km
2020	TABBY CANYON	14,330	88 km
2002	GARDEN VALLEY COMPLEX (EAST FORK)	14,245	64 km
2020	KNOLLS	12,948	66 km
2017	TANK HOLLOW	11,003	83 km
2019	GOOSE POINT	9,186	80 km
2001	BEEF HOLLOW	9,062	54 km
2007	MM COMPLEX	8,767	67 km
1999	WEST MOUNTAIN II	8,476	79 km
1996	SOLDIER PASS	8,010	68 km
2003	CASCADE II	7,943	33 km
2001	MOLLIE	7,850	91 km
1998	FAUST	6,957	84 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	24°F (-4°C)	1.6 in
February	26°F (-3°C)	1.5 in
March	33°F (1°C)	1.5 in
April	40°F (5°C)	1.6 in
May	49°F (10°C)	1.7 in
June	58°F (14°C)	1.1 in	Driest
July	68°F (20°C)	1.1 in	Warmest
August	64°F (18°C)	1.2 in
September	56°F (13°C)	1.5 in
October	45°F (7°C)	1.6 in
November	32°F (0°C)	1.7 in	Wettest
December	24°F (-5°C)	1.6 in	Coldest

East Basin has a seasonal temperature swing of 44°F / from 24°F in December to 68°F in July. Total annual precipitation is 17.7 inches, with November being the wettest month (1.7") and June the driest (1.1").

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