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Weather & Climate in Quartz Hill, CA

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

Quartz Hill enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 45°F in January while summers reach 82°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 6.8 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 2,468 feet.

Temperature

45°F Jan (7°C) 82°F Jul (28°C)
Annual Average62.1°F
15% above US avg
January Average45°F (7°C)
July Average82°F (28°C)
Sunny Days330 days/yr

Geography

Elevation2,468 ft (752 m)
Area3.8 sq mi (9.7 km²)
Population Density2,917/sq mi
Coordinates34.6520°N, 118.2159°W
TimezoneAmerica/Los_Angeles
CountyLos Angeles County County
Nearest AirportBob Hope (BUR)
32 miles away

Precipitation & Snow

Annual Rainfall 6.8"
82% below US avg
Wettest Month (Feb) 2.68"
Driest Month (Jun) 0.08"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskVery High
Risk Score100.0 / 100
Social Vulnerability55.4 / 100
Community Resilience13.6 / 100

Hazard Breakdown

Tornado Relatively High
Hurricane No Rating
Earthquake Very High
Wildfire Very High
Flood Very High
Hail Relatively Moderate
Strong Wind Relatively Moderate
Heat Wave Relatively High
Winter Weather Relatively Moderate
Lightning Very High
Drought Relatively Low
Cold Wave Very Low
Landslide Relatively High
Coastal Flood Relatively High
Tsunami Relatively Low
Avalanche Relatively High
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

10,684 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.

Jul 6, 2019 Ridgecrest Earthquake Sequence M7.1 136 km 8 km
Jan 17, 1994 Northridge, California, earthquake M6.7 57 km 18 km
Jul 4, 2019 Ridgecrest Earthquake Sequence M6.4 134 km 11 km
Jun 28, 1992 The 1992 Big Bear, California Earthquake M6.3 137 km 4 km
Jan 17, 1994 1km ENE of Granada Hills, California M5.9 49 km 5 km
Jun 28, 1991 The 1991 Sierra Madre, California Earthquake M5.8 47 km 8 km
Sep 20, 1995 16km NNE of Ridgecrest, California M5.8 134 km 5 km
Jul 11, 1992 12km NW of California City, California M5.7 64 km 10 km
Oct 16, 1999 7km ENE of Running Springs, CA M5.6 117 km 6 km
Jan 17, 1994 7km NNE of Simi Valley, California M5.6 57 km 9 km
Jun 28, 1992 11km SSE of Big Bear Lake, California M5.5 137 km 10 km
Jun 4, 2020 17km S of Searles Valley, CA M5.5 129 km 8 km
Feb 28, 1990 The 1990 Upland, California Earthquake M5.5 74 km 3 km
Jul 6, 2019 15km ESE of Little Lake, CA M5.5 145 km 5 km
Jul 6, 2019 20km E of Little Lake, CA M5.4 148 km 7 km
Jul 5, 2019 16km W of Searles Valley, CA M5.4 136 km 7 km
Aug 17, 1995 17km N of Ridgecrest, California M5.4 135 km 5 km
Nov 27, 1992 10km NNW of Big Bear City, California M5.3 126 km 0 km
Dec 4, 1992 10km SE of Lucerne Valley, California M5.3 125 km 1 km
Jun 28, 1992 1km N of Big Bear Lake, California M5.3 127 km 7 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

77 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 50 injuries.

Date Rating Distance Path Fatalities
Mar 1, 1983 EF2 76 km 3.5 mi 0
Nov 9, 1982 EF2 97 km 10.0 mi 0
Nov 9, 1982 EF2 57 km 1.0 mi 0
Nov 7, 1966 EF2 84 km 0.1 mi 0
Nov 7, 1966 EF2 90 km 10.3 mi 0
Jun 25, 1954 EF2 93 km 0.1 mi 0
Mar 22, 2023 EF1 73 km 0.5 mi 0
Jan 9, 1998 EF1 97 km 1.5 mi 0
May 18, 1997 EF1 95 km 9.0 mi 0
May 18, 1997 EF1 90 km 3.5 mi 0
May 11, 1997 EF1 94 km 0.2 mi 0
Jan 14, 1993 EF1 89 km 1.0 mi 0
Dec 7, 1992 EF1 95 km 0.1 mi 0
Mar 20, 1992 EF1 62 km 0.2 mi 0
Mar 16, 1986 EF1 95 km 1.2 mi 0
Oct 1, 1983 EF1 82 km 0.3 mi 0
Nov 9, 1982 EF1 81 km 0.2 mi 0
Mar 29, 1982 EF1 65 km 2.0 mi 0
Jan 31, 1979 EF1 55 km 0.1 mi 0
May 8, 1977 EF1 97 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 3.1 m (10 ft).

Year Location Cause Max Wave Deaths Distance
1930 S. CALIFORNIA Eruption + Earthquake 3.1 m 1 80 km
1994 WEST COAST, USA Earthquake 0.1 m 57 57 km
1855 S. CALIFORNIA Eruption + Earthquake — — 62 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Golden Trout Creek (190 km).

Name Type Elevation Last Eruption Distance
Golden Trout Creek Volcanic field 2,886 m (9,469 ft) -5550 190 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: STATION (165,368 acres, 2009).

Year Name Acres Burned Distance
2009 STATION 165,368 37 km
2006 DAY 159,713 69 km
2020 BOBCAT 115,728 45 km
2003 SIMI 107,756 64 km
2018 WOOLSEY 97,962 81 km
2003 OLD 90,180 97 km
2003 PIRU 63,920 62 km
2003 GRAND PRIX 50,799 86 km
1985 FERNDALE 46,724 90 km
2016 SAND 41,561 32 km
2007 BUCKWEED 41,332 26 km
1993 GREEN MEADOWS 38,115 92 km
2002 WILLIAMS 37,505 65 km
2007 RANCH 37,009 49 km
2016 BLUE CUT 36,856 75 km
2008 PIUTE 36,251 94 km
2013 POWERHOUSE 32,329 22 km
2020 LAKE 30,971 32 km
2008 FREEWAY COMPLEX 29,350 92 km
2011 BRECKENRIDGE COMPLEX 27,229 93 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 45°F (7°C) 2.5 in Coldest
February 48°F (9°C) 2.7 in Wettest
March 50°F (10°C) 2.2 in
April 55°F (13°C) 0.8 in
May 63°F (17°C) 0.3 in
June 71°F (22°C) 0.1 in Driest
July 82°F (28°C) 0.1 in Warmest
August 78°F (26°C) 0.2 in
September 73°F (23°C) 0.3 in
October 63°F (17°C) 0.4 in
November 52°F (11°C) 1.7 in
December 45°F (7°C) 2.0 in

Quartz Hill has a seasonal temperature swing of 37°F / from 45°F in January to 82°F in July. Total annual precipitation is 13.1 inches, with February being the wettest month (2.7") and June the driest (0.1").

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