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Weather & Climate in Santa Ana, CA

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

Santa Ana enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 54°F in January while summers reach 72°F in July / relatively mild seasonal variation. The area gets 331 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 27.5 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 82 feet.

Temperature

54°F Jan (12°C) 72°F Jul (22°C)
Annual Average62.9°F
16% above US avg
January Average54°F (12°C)
July Average72°F (22°C)
Sunny Days331 days/yr

Geography

Elevation82 ft (25 m)
Area27.4 sq mi (70.9 km²)
Population Density11,382/sq mi
Coordinates33.7363°N, 117.8829°W
TimezoneAmerica/Los_Angeles
CountyOrange County County
Nearest AirportJohn Wayne/Orange County (SNA)
4 miles away

Precipitation & Snow

Annual Rainfall 27.5"
28% below US avg
Snowfall 0.0"
Wettest Month (Jan) 2.91"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskVery High
Risk Score99.8 / 100
Social Vulnerability24.9 / 100
Community Resilience16.3 / 100

Hazard Breakdown

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

Earthquake History

9,375 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.3.

Jun 28, 1992 The 1992 Landers, California Earthquake M7.3 143 km 0 km
Jan 17, 1994 Northridge, California, earthquake M6.7 80 km 18 km
Jun 28, 1992 The 1992 Big Bear, California Earthquake M6.3 110 km 4 km
Apr 23, 1992 The 1992 Joshua Tree, California Earthquake M6.1 147 km 12 km
Jan 17, 1994 1km ENE of Granada Hills, California M5.9 82 km 5 km
Jun 28, 1991 The 1991 Sierra Madre, California Earthquake M5.8 60 km 8 km
Jun 28, 1992 3km NE of Yucca Valley, California M5.8 143 km -1 km
Jun 29, 1992 3km ESE of Yucca Valley, California M5.7 143 km 10 km
Oct 16, 1999 7km ENE of Running Springs, CA M5.6 96 km 6 km
Jan 17, 1994 7km NNE of Simi Valley, California M5.6 100 km 9 km
Jun 28, 1992 11km SSE of Big Bear Lake, California M5.5 106 km 10 km
Feb 28, 1990 The 1990 Upland, California Earthquake M5.5 49 km 3 km
Jun 28, 1992 0km E of Yucca Valley, CA M5.5 141 km 8 km
Jul 7, 2010 20km NNW of Borrego Springs, CA M5.4 135 km 12 km
Jun 28, 1992 26km NNW of Yucca Valley, CA M5.4 143 km 4 km
Jul 1, 1992 24km N of Yucca Valley, California M5.3 147 km 5 km
Nov 27, 1992 10km NNW of Big Bear City, California M5.3 113 km 0 km
Jun 28, 1992 1km N of Big Bear Lake, California M5.3 107 km 7 km
Dec 4, 1992 10km SE of Lucerne Valley, California M5.3 115 km 1 km
Sep 15, 1992 9km SE of Yucca Valley, California M5.3 145 km 7 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

114 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 58 injuries.

Date Rating Distance Path Fatalities
May 22, 2008 EF2 61 km 2.8 mi 0
Mar 1, 1983 EF2 53 km 3.5 mi 0
Nov 9, 1982 EF2 30 km 10.0 mi 0
Nov 9, 1982 EF2 72 km 1.0 mi 0
Nov 7, 1966 EF2 10 km 0.2 mi 0
Nov 7, 1966 EF2 43 km 10.3 mi 0
Nov 7, 1966 EF2 43 km 0.1 mi 0
Mar 22, 2023 EF1 37 km 0.5 mi 0
Jan 19, 2010 EF1 23 km 4.6 mi 0
Feb 19, 2005 EF1 72 km 2.8 mi 0
Jan 29, 1998 EF1 94 km 0.5 mi 0
Jan 9, 1998 EF1 27 km 1.5 mi 0
Dec 21, 1997 EF1 13 km 1.0 mi 0
Nov 11, 1997 EF1 9 km 0.2 mi 0
Jan 14, 1993 EF1 17 km 1.0 mi 0
Dec 7, 1992 EF1 11 km 0.1 mi 0
Dec 7, 1992 EF1 11 km 0.1 mi 0
Mar 20, 1992 EF1 49 km 0.2 mi 0
Mar 27, 1991 EF1 13 km 3.0 mi 0
Mar 27, 1991 EF1 93 km 0.2 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

4 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 77 km
1862 S. CALIFORNIA Eruption + Earthquake 1.2 m — 132 km
1994 WEST COAST, USA Earthquake 0.1 m 57 80 km
1855 S. CALIFORNIA Eruption + Earthquake — — 45 km
Source: NOAA/NCEI Historical Tsunami Database.

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 70 km
2020 BOBCAT 115,728 66 km
2018 WOOLSEY 97,962 97 km
2003 OLD 90,180 79 km
1999 WILLOW 63,525 99 km
2003 GRAND PRIX 50,799 63 km
2016 SAND 41,561 85 km
2006 ESPERANZA 40,566 94 km
2002 WILLIAMS 37,505 52 km
2016 BLUE CUT 36,856 74 km
2008 YELLOW 33,232 55 km
2020 APPLE 32,374 99 km
2008 FREEWAY COMPLEX 29,350 24 km
2022 FAIRVIEW 28,680 94 km
2007 SANTIAGO 27,605 21 km
1998 EDNA 27,561 84 km
2020 INDIA 24,193 56 km
2005 TOPANGA 24,133 92 km
1993 CALIFORNIA 23,899 80 km
2018 HOLY 22,845 39 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 54°F (12°C) 2.9 in Coldest, Wettest
February 58°F (15°C) 2.9 in
March 59°F (15°C) 2.6 in
April 62°F (17°C) 0.8 in
May 65°F (18°C) 0.2 in
June 69°F (21°C) 0.1 in
July 72°F (22°C) 0.0 in Driest
August 74°F (23°C) 0.1 in Warmest
September 72°F (22°C) 0.3 in
October 68°F (20°C) 0.4 in
November 62°F (16°C) 1.3 in
December 57°F (14°C) 1.9 in

Santa Ana has a seasonal temperature swing of 20°F / from 54°F in January to 74°F in August. Total annual precipitation is 13.5 inches, with January being the wettest month (2.9") and July the driest (0.0").

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