Weather & Climate in St. George, UT

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

St. George enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 41°F in January while summers reach 95°F in July. The area gets 337 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 10.2 inches (drier than the 38-inch national average). The area receives 5.9 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 2,526 feet.

Temperature

41°F Jan (5°C) 95°F Jul (35°C)

Annual Average	64.9°F
	20% above US avg
January Average	41°F (5°C)
July Average	95°F (35°C)
Sunny Days	337 days/yr

Geography

Elevation	2,526 ft (770 m)
Area	70.9 sq mi (183.7 km²)
Population Density	1,281/sq mi
Coordinates	37.0770°N, 113.5765°W
Timezone	America/Denver
County	Washington County County
Nearest Airport	St George Regional (SGU) 5 miles away

Precipitation & Snow

Annual Rainfall 10.2"

73% below US avg

Snowfall 5.9"

Wettest Month (Jan) 1.22"

Driest Month (Jun) 0.20"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	92.8 / 100
Social Vulnerability	20.8 / 100
Community Resilience	45.1 / 100

Hazard Breakdown

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

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

Earthquake History

687 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.9.

Sep 2, 1992	3 km SSE of Washington, Utah	M5.9	8 km	14 km
May 22, 2015	37 km SSW of Caliente, Nevada	M5.3	99 km	4 km
Apr 20, 1991	19 km SE of Minersville, Utah	M4.6	131 km	10 km
Aug 4, 1992	22 km SE of Alamo, Nevada	M4.6	125 km	5 km
May 16, 2004	30 km ESE of Alamo, Nevada	M4.5	114 km	0 km
Jul 29, 2024	24 km S of Brian Head, Utah	M4.5	78 km	20 km
Jun 20, 2006	45 km SSW of Caliente, Nevada	M4.4	99 km	0 km
Sep 19, 2022	45 km ESE of Littlefield, Arizona	M4.4	45 km	10 km
Mar 24, 2002	41 km SSE of Alamo, Nevada	M4.3	131 km	9 km
Jun 30, 2008	36 km SSE of Caliente, Nevada	M4.3	71 km	0 km
Jan 15, 2016	19 km WSW of Enterprise, Utah	M4.2	57 km	1 km
Jun 30, 2019	6 km E of Panaca, Nevada	M4.2	102 km	3 km
Jan 2, 1998	9 km S of Alamo, Nevada	M4.2	142 km	5 km
Jun 29, 1992	12 km WNW of Cedar City, Utah	M4.2	80 km	-3 km
Jun 29, 1992	12 km WNW of Cedar City, Utah	M4.2	77 km	7 km
Jan 28, 2014	37 km W of Veyo, Utah	M4.1	56 km	7 km
Jan 4, 2010	8 km S of Cedar City, Utah	M4.1	74 km	9 km
Nov 8, 2009	32 km S of Caliente, Nevada	M4.1	83 km	0 km
Oct 22, 1999	20 km SE of Minersville, Utah	M4.1	135 km	6 km
Jul 4, 2015	Utah	M4.1	130 km	3 km

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

Tornado History

9 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date	Rating	Distance	Path	Fatalities
May 30, 1986	EF1	66 km	3.5 mi	0
Dec 27, 1983	EF1	55 km	0.4 mi	0
Aug 12, 1976	EF1	55 km	0.1 mi	0
Jul 24, 2012	EF0	79 km	0.7 mi	0
Aug 24, 2011	EF0	35 km	1.1 mi	0
Jul 23, 1998	EF0	61 km	0.1 mi	0
Apr 26, 1994	EF0	22 km	3.0 mi	0
Aug 31, 1992	EF0	13 km	0.3 mi	0
Jul 14, 1953	EF0	55 km	0.1 mi	0

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

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Uinkaret Field (87 km).

Name	Type	Elevation	Last Eruption	Distance
Uinkaret Field	Volcanic field	1,555 m (5,102 ft)	1100	87 km
Markagunt Plateau	Volcanic field	2,840 m (9,318 ft)	1050	98 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SOUTHERN NEVADA COMPLEX (DUZAK) (327,156 acres, 2005).

Year	Name	Acres Burned	Distance
2005	SOUTHERN NEVADA COMPLEX (DUZAK)	327,156	67 km
2005	SOUTHERN NEVADA COMPLEX (MEADOW VALLEY)	150,019	93 km
2020	MEADOW VALLEY	59,254	92 km
2005	WESTSIDE COMPLEX	58,767	32 km
2006	JARVIS	49,636	20 km
2005	COW	44,460	59 km
2020	BASIN	38,588	63 km
2005	TWEEDY POINT	36,126	56 km
2012	HOBBLE COMPLEX	35,205	52 km
2004	HAWKINS	34,259	52 km
2003	APEX	31,000	23 km
1993	MEADOW	30,199	92 km
2005	MT BANGS COMPLEX	29,605	53 km
2005	SOUTHERN NEVADA COMPLEX (TRAMP)	27,560	96 km
2006	BULL COMPLEX	27,458	49 km
2005	TANK COMPLEX	24,268	86 km
2007	BLACK ROCK GULCH	21,639	35 km
1999	JUMPSPRING	19,621	52 km
2006	COVE MOUNTAIN	17,746	38 km
2004	SQUARE COMPLEX	17,413	39 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	41°F (5°C)	1.2 in	Wettest
February	47°F (8°C)	1.1 in
March	53°F (12°C)	1.2 in
April	60°F (16°C)	0.5 in
May	70°F (21°C)	0.4 in
June	80°F (26°C)	0.2 in	Driest
July	95°F (35°C)	0.6 in	Warmest
August	84°F (29°C)	0.9 in
September	75°F (24°C)	0.7 in
October	63°F (17°C)	0.7 in
November	50°F (10°C)	0.8 in
December	41°F (5°C)	0.6 in	Coldest

St. George has a seasonal temperature swing of 54°F / from 41°F in December to 95°F in July. Total annual precipitation is 8.9 inches, with January being the wettest month (1.2") and June the driest (0.2").

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