Weather & Climate in Rockville, UT

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

Rockville enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 41°F in January while summers reach 83°F in July. The area gets 330 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 11.6 inches (drier than the 38-inch national average). The area receives 1.4 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 3,915 feet.

Temperature

41°F Jan (5°C) 83°F Jul (28°C)

Annual Average	60.8°F
	13% above US avg
January Average	41°F (5°C)
July Average	83°F (28°C)
Sunny Days	330 days/yr

Geography

Elevation	3,915 ft (1,193 m)
Area	8.2 sq mi (21.3 km²)
Population Density	20/sq mi
Coordinates	37.1478°N, 113.0548°W
Timezone	America/Denver
County	Washington County County
Nearest Airport	St George Regional (SGU) 26 miles away

Precipitation & Snow

Annual Rainfall 11.6"

69% below US avg

Snowfall 1.4"

Wettest Month (Mar) 1.97"

Driest Month (Jun) 0.43"

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

642 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	40 km	14 km
May 22, 2015	37 km SSW of Caliente, Nevada	M5.3	143 km	4 km
Apr 20, 1991	19 km SE of Minersville, Utah	M4.6	106 km	10 km
Jan 3, 2011	10 km NW of Circleville, Utah	M4.6	137 km	11 km
Jul 29, 2024	24 km S of Brian Head, Utah	M4.5	40 km	20 km
Jan 2, 1998	10 km ESE of Beaver, Utah	M4.4	130 km	12 km
Sep 19, 2022	45 km ESE of Littlefield, Arizona	M4.4	66 km	10 km
Jun 20, 2006	45 km SSW of Caliente, Nevada	M4.4	144 km	0 km
Jun 30, 2008	36 km SSE of Caliente, Nevada	M4.3	113 km	0 km
Jan 15, 2016	19 km WSW of Enterprise, Utah	M4.2	87 km	1 km
Jun 30, 2019	6 km E of Panaca, Nevada	M4.2	132 km	3 km
Jun 29, 1992	12 km WNW of Cedar City, Utah	M4.2	66 km	-3 km
Apr 12, 2012	16 km NNE of Bryce Canyon City, Utah	M4.2	112 km	15 km
Jun 29, 1992	12 km WNW of Cedar City, Utah	M4.2	63 km	7 km
Jan 28, 2014	37 km W of Veyo, Utah	M4.1	96 km	7 km
Jan 4, 2010	8 km S of Cedar City, Utah	M4.1	50 km	9 km
Oct 22, 1999	20 km SE of Minersville, Utah	M4.1	109 km	6 km
Nov 8, 2009	32 km S of Caliente, Nevada	M4.1	126 km	0 km
Jul 4, 2015	Utah	M4.1	94 km	3 km
Sep 6, 1994	12 km SSW of Circleville, Utah	M4.0	121 km	6 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Sep 22, 2016	EF1	94 km	0.8 mi	0
May 30, 1986	EF1	78 km	3.5 mi	0
Dec 27, 1983	EF1	21 km	0.4 mi	0
Aug 12, 1976	EF1	23 km	0.1 mi	0
Aug 26, 2016	EF0	92 km	0.3 mi	0
Aug 24, 2011	EF0	13 km	1.1 mi	0
Sep 8, 2000	EF0	93 km	2.0 mi	0
Jul 23, 1998	EF0	65 km	0.1 mi	0
Apr 26, 1994	EF0	58 km	3.0 mi	0
Aug 31, 1992	EF0	40 km	0.3 mi	0
Jul 14, 1953	EF0	43 km	0.1 mi	0

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

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Markagunt Plateau (59 km).

Name	Type	Elevation	Last Eruption	Distance
Markagunt Plateau	Volcanic field	2,840 m (9,318 ft)	1050	59 km
Uinkaret Field	Volcanic field	1,555 m (5,102 ft)	1100	86 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: BRIANHEAD (74,276 acres, 2017).

Year	Name	Acres Burned	Distance
2017	BRIANHEAD	74,276	78 km
2020	MANGUM	71,634	87 km
2005	WESTSIDE COMPLEX	58,767	76 km
2006	WARM	58,255	98 km
2006	JARVIS	49,636	67 km
2005	COW	44,460	94 km
2020	BASIN	38,588	97 km
2005	TWEEDY POINT	36,126	86 km
1996	BRIDGER KNOLL	35,478	89 km
2012	HOBBLE COMPLEX	35,205	80 km
2004	HAWKINS	34,259	81 km
2003	APEX	31,000	68 km
2005	MT BANGS COMPLEX	29,605	94 km
2006	BULL COMPLEX	27,458	85 km
2007	BLACK ROCK GULCH	21,639	72 km
1999	JUMPSPRING	19,621	83 km
1996	JUMP	19,411	75 km
2019	CASTLE	19,271	97 km
2006	COVE MOUNTAIN	17,746	69 km
2004	SQUARE COMPLEX	17,413	76 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	41°F (5°C)	1.7 in
February	41°F (5°C)	1.8 in
March	46°F (8°C)	2.0 in	Wettest
April	52°F (11°C)	1.0 in
May	61°F (16°C)	0.8 in
June	71°F (22°C)	0.4 in	Driest
July	83°F (28°C)	1.2 in	Warmest
August	76°F (25°C)	1.5 in
September	69°F (20°C)	1.1 in
October	57°F (14°C)	1.1 in
November	45°F (7°C)	1.4 in
December	37°F (3°C)	1.3 in	Coldest

Rockville has a seasonal temperature swing of 46°F / from 37°F in December to 83°F in July. Total annual precipitation is 15.2 inches, with March being the wettest month (2.0") and June the driest (0.4").

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