Weather & Climate in Newcastle, UT

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

Newcastle experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 29°F in January while summers reach 72°F in July. The area gets 318 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 5,259 feet.

Temperature

29°F Jan (-2°C) 72°F Jul (22°C)

Annual Average	48.7°F
	10% below US avg
January Average	29°F (-2°C)
July Average	72°F (22°C)
Sunny Days	318 days/yr

Geography

Elevation	5,259 ft (1,603 m)
Area	4.0 sq mi (10.3 km²)
Population Density	58/sq mi
Coordinates	37.6629°N, 113.5644°W
Timezone	America/Denver
County	Iron County County
Nearest Airport	Cedar City Regional (CDC) 26 miles away

Precipitation & Snow

Wettest Month (Mar) 1.89"

Driest Month (Jun) 0.47"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	61.4 / 100
Social Vulnerability	10.6 / 100
Community Resilience	36.6 / 100

Hazard Breakdown

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

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

Earthquake History

755 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	63 km	14 km
May 22, 2015	37 km SSW of Caliente, Nevada	M5.3	105 km	4 km
Apr 20, 1991	19 km SE of Minersville, Utah	M4.6	82 km	10 km
Aug 4, 1992	22 km SE of Alamo, Nevada	M4.6	132 km	5 km
Jan 3, 2011	10 km NW of Circleville, Utah	M4.6	125 km	11 km
May 16, 2004	30 km ESE of Alamo, Nevada	M4.5	120 km	0 km
Jul 29, 2024	24 km S of Brian Head, Utah	M4.5	66 km	20 km
Jan 2, 1998	10 km ESE of Beaver, Utah	M4.4	111 km	12 km
Sep 19, 2022	45 km ESE of Littlefield, Arizona	M4.4	110 km	10 km
Jun 20, 2006	45 km SSW of Caliente, Nevada	M4.4	109 km	0 km
Jun 30, 2008	36 km SSE of Caliente, Nevada	M4.3	76 km	0 km
Jan 15, 2016	19 km WSW of Enterprise, Utah	M4.2	36 km	1 km
Jun 30, 2019	6 km E of Panaca, Nevada	M4.2	67 km	3 km
Jan 2, 1998	9 km S of Alamo, Nevada	M4.2	147 km	5 km
Jun 29, 1992	12 km WNW of Cedar City, Utah	M4.2	34 km	-3 km
Jun 29, 1992	12 km WNW of Cedar City, Utah	M4.2	32 km	7 km
Apr 12, 2012	16 km NNE of Bryce Canyon City, Utah	M4.2	130 km	15 km
Jan 28, 2014	37 km W of Veyo, Utah	M4.1	62 km	7 km
Jan 4, 2010	8 km S of Cedar City, Utah	M4.1	45 km	9 km
Nov 8, 2009	32 km S of Caliente, Nevada	M4.1	87 km	0 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 30, 1986	EF1	8 km	3.5 mi	0
Dec 27, 1983	EF1	93 km	0.4 mi	0
Aug 12, 1976	EF1	95 km	0.1 mi	0
Aug 21, 2012	EF0	81 km	0.1 mi	0
Jul 24, 2012	EF0	53 km	0.7 mi	0
Aug 24, 2011	EF0	72 km	1.1 mi	0
May 24, 2009	EF0	91 km	0.1 mi	0
Sep 4, 2001	EF0	95 km	5.0 mi	0
Sep 5, 1998	EF0	75 km	0.1 mi	0
Jul 23, 1998	EF0	9 km	0.1 mi	0
Apr 26, 1994	EF0	87 km	3.0 mi	0
Aug 31, 1992	EF0	74 km	0.3 mi	0
May 21, 1992	EF0	93 km	0.3 mi	0
Jul 14, 1953	EF0	33 km	0.1 mi	0

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

Nearby Volcanoes

3 volcanoes within 200 km. Closest: Markagunt Plateau (79 km).

Name	Type	Elevation	Last Eruption	Distance
Markagunt Plateau	Volcanic field	2,840 m (9,318 ft)	1050	79 km
Uinkaret Field	Volcanic field	1,555 m (5,102 ft)	1100	148 km
Black Rock Desert	Volcanic field	1,800 m (5,906 ft)	1290	173 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	80 km
2017	BRIANHEAD	74,276	78 km
2005	WESTSIDE COMPLEX	58,767	63 km
2006	JARVIS	49,636	70 km
2004	HAWKINS	34,259	34 km
2003	APEX	31,000	61 km
2006	BULL COMPLEX	27,458	46 km
2007	BLACK ROCK GULCH	21,639	98 km
2012	BABOON	20,453	69 km
2019	NECK	19,545	58 km
2006	COVE MOUNTAIN	17,746	38 km
2004	SQUARE COMPLEX	17,413	46 km
2006	KOLOB	17,036	63 km
2000	COYOTE	16,273	88 km
1996	SHOEMAKE	15,125	69 km
2021	FLATT	14,611	18 km
1995	CEDAR POCKET	13,397	70 km
2005	BLUE SPRING	13,285	42 km
2007	GREENVILLE	13,043	92 km
2009	MILL FLAT	12,708	29 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	29°F (-2°C)	1.3 in	Coldest
February	34°F (1°C)	1.6 in
March	39°F (4°C)	1.9 in	Wettest
April	46°F (8°C)	1.1 in
May	54°F (12°C)	0.9 in
June	64°F (18°C)	0.5 in	Driest
July	72°F (22°C)	1.3 in	Warmest
August	70°F (21°C)	1.4 in
September	62°F (16°C)	1.2 in
October	50°F (10°C)	1.1 in
November	38°F (3°C)	1.3 in
December	30°F (-1°C)	1.3 in

Newcastle has a seasonal temperature swing of 43°F / from 29°F in January to 72°F in July. Total annual precipitation is 14.9 inches, with March being the wettest month (1.9") and June the driest (0.5").

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