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Weather & Climate in Charleston, UT

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

Charleston experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 25°F in January while summers reach 70°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 15.1 inches (drier than the 38-inch national average). The area receives 75.0 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 5,491 feet.

Temperature

25°F Jan (-4°C) 70°F Jul (21°C)
Annual Average46.6°F
14% below US avg
January Average25°F (-4°C)
July Average70°F (21°C)
Sunny Days316 days/yr

Geography

Elevation5,491 ft (1,674 m)
Area2.2 sq mi (5.8 km²)
Population Density160/sq mi
Coordinates40.4673°N, 111.4595°W
TimezoneAmerica/Denver
CountyWasatch County County
Nearest AirportSalt Lake City International (SLC)
35 miles away

Precipitation & Snow

Annual Rainfall 15.1"
60% below US avg
Snowfall 75.0"
Wettest Month (Jan) 2.05"
Driest Month (Jun) 0.98"

Air Quality

AQI Median41.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score33.5 / 100
Social Vulnerability10.6 / 100
Community Resilience83.0 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Very Low
Wildfire Relatively Moderate
Flood Very Low
Hail Very Low
Strong Wind Relatively Low
Heat Wave Very Low
Winter Weather Relatively High
Lightning Relatively Moderate
Ice Storm Very Low
Drought Very Low
Cold Wave Very Low
Landslide Relatively Moderate
Volcano Very Low
Avalanche Relatively High
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

528 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 61 km 12 km
Apr 15, 2010 9 km NE of Randolph, Utah M4.9 142 km 10 km
Mar 18, 2020 6 km NNE of Magna, Utah M4.6 61 km 9 km
Mar 18, 2020 5 km NE of Magna, Utah M4.6 60 km 11 km
May 5, 2024 16 km SW of Thatcher, Utah M4.4 148 km 7 km
Apr 17, 2003 6 km SSW of Levan, Utah M4.2 113 km 1 km
Apr 16, 2020 4 km NE of Magna, Utah M4.2 59 km 10 km
Apr 15, 2020 4 km NE of Magna, Utah M4.2 59 km 9 km
Mar 16, 1992 6 km S of Herriman, Utah M4.2 50 km 12 km
Mar 18, 2020 1 km NNW of Magna, Utah M4.2 62 km 9 km
Mar 7, 2000 7 km N of Helper, Utah M4.2 95 km -3 km
Jun 29, 2014 6 km SE of Spring City, Utah M4.2 114 km 9 km
May 25, 2016 15 km NNE of Tabiona, Utah M4.0 68 km 16 km
Mar 18, 2020 4 km NNE of Magna, Utah M4.0 61 km 7 km
Mar 23, 2020 8 km NNE of Magna, Utah M3.9 61 km 10 km
Mar 18, 2020 4 km NNE of Magna, Utah M3.9 61 km 9 km
May 1, 2025 4 km WNW of Independence, Utah M3.9 21 km 14 km
May 4, 2024 16 km SW of Thatcher, Utah M3.9 147 km 6 km
Mar 18, 2020 6 km NE of Magna, Utah M3.9 59 km 10 km
Feb 5, 1998 7 km N of Helper, Utah M3.8 95 km -2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

46 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 fatality, 93 injuries.

Date Rating Distance Path Fatalities
Jun 19, 2022 EF2 89 km 2.1 mi 0
Aug 11, 1999 EF2 45 km 4.3 mi 1
Feb 9, 1965 EF2 61 km 0.1 mi 0
Jun 3, 1963 EF2 58 km 2.0 mi 0
Sep 2, 2021 EF1 59 km 2.1 mi 0
Sep 22, 2016 EF1 90 km 2.9 mi 0
Aug 20, 1998 EF1 84 km 0.1 mi 0
Jun 2, 1993 EF1 56 km 1.0 mi 0
May 3, 1993 EF1 73 km 0.1 mi 0
Sep 23, 1992 EF1 85 km 2.0 mi 0
Jul 25, 1991 EF1 68 km 10.0 mi 0
Jul 8, 1989 EF1 40 km 0.2 mi 0
Mar 2, 1989 EF1 60 km 0.2 mi 0
Jan 10, 1989 EF1 38 km 0.2 mi 0
Dec 2, 1970 EF1 13 km 1.0 mi 0
Aug 14, 1968 EF1 49 km 0.1 mi 0
Apr 17, 1966 EF1 37 km 0.1 mi 0
Jul 9, 1965 EF1 14 km 0.4 mi 0
May 28, 2018 EF0 45 km 0.3 mi 0
Sep 7, 2013 EF0 27 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

1 volcano within 200 km. Closest: Black Rock Desert (189 km).

Name Type Elevation Last Eruption Distance
Black Rock Desert Volcanic field 1,800 m (5,906 ft) 1290 189 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

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 74 km
2018 POLE CREEK 102,426 54 km
2018 DOLLAR RIDGE 69,817 63 km
2012 WOOD HOLLOW 46,763 83 km
2018 COAL HOLLOW 30,239 62 km
2000 OLDROYD COMPLEX (MONA WEST) 28,774 84 km
2007 SALT CREEK 26,924 86 km
2018 BALD MOUNTAIN 21,016 64 km
2007 KIMBELL 16,949 97 km
2000 CASTLEROCK 16,718 98 km
2016 WEST ANTELOPE 15,483 81 km
2020 TABBY CANYON 14,330 98 km
2002 GARDEN VALLEY COMPLEX (EAST FORK) 14,245 76 km
2020 KNOLLS 12,948 44 km
2021 BEAR 12,660 93 km
2017 TANK HOLLOW 11,003 54 km
1995 TURKEY 9,568 87 km
2019 GOOSE POINT 9,186 54 km
2001 BEEF HOLLOW 9,062 44 km
2007 MM COMPLEX 8,767 46 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 25°F (-4°C) 2.1 in Coldest, Wettest
February 27°F (-3°C) 1.9 in
March 35°F (1°C) 1.6 in
April 42°F (6°C) 1.3 in
May 51°F (10°C) 1.5 in
June 59°F (15°C) 1.0 in Driest
July 70°F (21°C) 1.1 in Warmest
August 66°F (19°C) 1.2 in
September 57°F (14°C) 1.4 in
October 46°F (8°C) 1.7 in
November 34°F (1°C) 1.8 in
December 25°F (-4°C) 1.8 in

Charleston has a seasonal temperature swing of 45°F / from 25°F in January to 70°F in July. Total annual precipitation is 18.3 inches, with January being the wettest month (2.1") and June the driest (1.0").

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