Weather & Climate in Summerlin South, NV

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

Summerlin South enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 43°F in January while summers reach 84°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 9.9 inches (drier than the 38-inch national average). The area receives 2.6 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 2,894 feet.

Temperature

43°F Jan (6°C) 84°F Jul (29°C)

Annual Average	61.8°F
	14% above US avg
January Average	43°F (6°C)
July Average	84°F (29°C)
Sunny Days	330 days/yr

Geography

Elevation	2,894 ft (882 m)
Area	9.7 sq mi (25.1 km²)
Population Density	3,104/sq mi
Coordinates	36.1242°N, 115.3324°W
Timezone	America/Los_Angeles
County	Clark County County
Nearest Airport	Harry Reid International (LAS) 11 miles away

Precipitation & Snow

Annual Rainfall 9.9"

74% below US avg

Snowfall 2.6"

Wettest Month (Feb) 0.67"

Driest Month (Jun) 0.12"

Air Quality

AQI Median	41.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very High
Risk Score	99.6 / 100
Social Vulnerability	46.1 / 100
Community Resilience	6.6 / 100

Hazard Breakdown

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

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

Earthquake History

571 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.

Jun 29, 1992	47 km ESE of Beatty, Nevada	M5.8	108 km	9 km
May 22, 2015	37 km SSW of Caliente, Nevada	M5.3	143 km	4 km
Mar 10, 1990	65 km SSW of Rachel, Nevada	M5.0	128 km	0 km
Jan 27, 1999	39 km NW of Indian Springs, Nevada	M4.8	97 km	5 km
Jun 28, 1992	16km NNW of Furnace Creek, California	M4.7	150 km	5 km
Aug 4, 1992	22 km SE of Alamo, Nevada	M4.6	129 km	5 km
May 16, 2004	30 km ESE of Alamo, Nevada	M4.5	136 km	0 km
Jan 25, 1999	37 km NW of Indian Springs, Nevada	M4.4	95 km	5 km
Aug 14, 2024	8 km NW of Indian Springs, Nevada	M4.4	67 km	13 km
May 30, 1993	43 km WNW of Indian Springs, Nevada	M4.4	93 km	5 km
Jun 20, 2006	45 km SSW of Caliente, Nevada	M4.4	136 km	0 km
Jul 5, 1992	California-Nevada border region	M4.4	106 km	5 km
Jun 28, 1992	29km WSW of Tecopa, California	M4.3	115 km	5 km
Mar 24, 2002	41 km SSE of Alamo, Nevada	M4.3	101 km	9 km
Jun 29, 1992	52 km WNW of Indian Springs, Nevada	M4.3	102 km	5 km
Apr 26, 1997	56 km SSW of Rachel, Nevada	M4.3	127 km	5 km
Jan 2, 1998	9 km S of Alamo, Nevada	M4.2	129 km	5 km
Jun 14, 2002	46 km ESE of Beatty, Nevada	M4.2	109 km	12 km
Jul 31, 1995	37 km NE of Beatty, Nevada	M4.2	146 km	10 km
Mar 1, 2013	50km WSW of Shoshone, CA	M4.1	136 km	8 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Mar 30, 1992	EF1	17 km	1.5 mi	0
Oct 14, 1989	EF1	33 km	0.2 mi	0
Sep 17, 1989	EF1	87 km	0.5 mi	0
Jun 7, 1964	EF1	38 km	0.1 mi	0
May 22, 2019	EF0	63 km	0.2 mi	0
Aug 4, 2014	EF0	53 km	0.1 mi	0
Sep 11, 1998	EF0	33 km	0.1 mi	0
Aug 25, 1998	EF0	78 km	1.0 mi	0
Mar 30, 1992	EF0	20 km	0.5 mi	0
Jan 30, 1990	EF0	57 km	0.2 mi	0
Jul 16, 1987	EF0	93 km	0.2 mi	0
May 28, 1986	EF0	59 km	3.0 mi	0
Jul 22, 1984	EF0	63 km	0.1 mi	0
Aug 20, 1975	EF0	42 km	0.1 mi	0
Aug 12, 1971	EF0	19 km	1.0 mi	0

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

Nearby Volcanoes

1 volcano within 200 km. Closest: Uinkaret Field (200 km).

Name	Type	Elevation	Last Eruption	Distance
Uinkaret Field	Volcanic field	1,555 m (5,102 ft)	1100	200 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: YORK (94,736 acres, 2023).

Year	Name	Acres Burned	Distance
2023	YORK	94,736	92 km
2020	DOME	43,628	94 km
2005	GOODSPRINGS	33,448	26 km
2013	CARPENTER 1	27,879	27 km
1994	COYOTE	24,951	99 km
2006	VEGAS	21,593	72 km
2006	FWS 9	20,441	45 km
2005	PERKINS COMPLEX	18,064	97 km
2005	SOUTHERN NEVADA COMPLEX (COYOTE)	9,953	52 km
2005	SOUTHERN NEVADA COMPLEX (LAMB)	8,094	87 km
1994	RATTLESNAK	6,521	98 km
1987	ZIPPER	6,306	22 km
1995	SENATOR II	5,019	94 km
2005	SOUTHERN NEVADA COMPLEX (WAMP)	4,813	60 km
2005	VEGAS	4,724	55 km
2002	LOST CABIN	4,555	25 km
2019	BONELLI PEAK	4,101	97 km
2005	SOUTHERN NEVADA COMPLEX (DRY LAKE)	3,876	44 km
2005	KINGSTON	3,739	63 km
2020	COTTONWOOD	2,783	23 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	43°F (6°C)	0.6 in	Coldest
February	51°F (10°C)	0.7 in	Wettest
March	56°F (13°C)	0.6 in
April	63°F (17°C)	0.2 in
May	72°F (22°C)	0.2 in
June	83°F (28°C)	0.1 in	Driest
July	84°F (29°C)	0.5 in
August	87°F (30°C)	0.6 in	Warmest
September	79°F (26°C)	0.4 in
October	67°F (19°C)	0.2 in
November	54°F (12°C)	0.4 in
December	46°F (8°C)	0.4 in

Summerlin South has a seasonal temperature swing of 44°F / from 43°F in January to 87°F in August. Total annual precipitation is 4.8 inches, with February being the wettest month (0.7") and June the driest (0.1").

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