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Weather & Climate in San Leandro, CA

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

San Leandro enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 49°F in January while summers reach 62°F in July / relatively mild seasonal variation. The area gets 324 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 40.2 inches. The area receives 1.1 inches of snow annually. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 23 feet.

Temperature

49°F Jan (9°C) 62°F Jul (17°C)
Annual Average55.6°F
3% above US avg
January Average49°F (9°C)
July Average62°F (17°C)
Sunny Days324 days/yr

Geography

Elevation23 ft (7 m)
Area15.5 sq mi (40.2 km²)
Population Density6,646/sq mi
Coordinates37.7034°N, 122.1630°W
TimezoneAmerica/Los_Angeles
CountySan Mateo County County
Nearest AirportMetro Oakland International (OAK)
3 miles away

Precipitation & Snow

Annual Rainfall 40.2"
6% above US avg
Snowfall 1.1"
Wettest Month (Jan) 4.49"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score99.2 / 100
Social Vulnerability20.5 / 100
Community Resilience97.6 / 100

Hazard Breakdown

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

Earthquake History

5,797 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.

Aug 24, 2014 The 2014 South Napa, California Earthquake M6.0 58 km 11 km
Apr 18, 1990 5 km NNW of Aromas, California M5.4 97 km 5 km
Apr 18, 1990 4 km E of Interlaken, California M5.1 93 km 7 km
Aug 12, 1998 10 km SW of Ridgemark, California M5.1 122 km 9 km
Jan 16, 1993 9 km E of Gilroy, California M4.9 98 km 7 km
May 14, 2002 5 km SSW of Gilroy, California M4.9 96 km 7 km
Apr 18, 1990 4 km NNW of Aromas, California M4.9 97 km 6 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 78 km 9 km
Apr 23, 1995 22 km NNE of Soledad, California M4.9 149 km 7 km
Apr 19, 1996 2 km E of Aromas, California M4.9 103 km 5 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 120 km 7 km
May 12, 2006 7 km W of Cobb, California M4.7 136 km 4 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 55 km 8 km
Apr 18, 1990 4 km N of Aromas, California M4.7 98 km 4 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 61 km 9 km
Jan 2, 2025 4 km NW of Cobb, CA M4.7 137 km 1 km
Mar 24, 1991 1 km NNE of Interlaken, California M4.6 91 km 15 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 51 km 8 km
Jan 11, 2000 6 km N of Geyserville, California M4.6 136 km 6 km
Feb 18, 2004 4 km WNW of Cobb, California M4.6 137 km 3 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

55 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 9 injuries.

Date Rating Distance Path Fatalities
May 5, 1998 EF2 39 km 0.6 mi 0
Jun 1, 1958 EF2 96 km 15.0 mi 0
Jan 11, 1951 EF2 37 km 5.7 mi 0
Dec 14, 2024 EF1 74 km 0.3 mi 0
Mar 18, 2011 EF1 96 km 0.1 mi 0
Jan 23, 2010 EF1 42 km 1.6 mi 0
Mar 20, 2005 EF1 23 km 3.0 mi 0
Dec 20, 2001 EF1 88 km 0.5 mi 0
Dec 5, 1998 EF1 95 km 1.5 mi 0
May 5, 1998 EF1 36 km 0.3 mi 0
Dec 23, 1996 EF1 91 km 6.0 mi 0
Dec 2, 1992 EF1 97 km 1.0 mi 0
Feb 27, 1983 EF1 95 km 0.8 mi 0
Jan 14, 1980 EF1 35 km 0.3 mi 0
May 31, 1967 EF1 81 km 0.1 mi 0
Apr 1, 1965 EF1 87 km 0.1 mi 0
Apr 1, 1958 EF1 19 km 0.2 mi 0
Jan 6, 2019 EF0 84 km 0.5 mi 0
Jan 6, 2019 EF0 83 km 0.1 mi 0
Apr 27, 2016 EF0 90 km 0.2 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

5 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).

Year Location Cause Max Wave Deaths Distance
1868 N. CALIFORNIA Eruption + Earthquake 4.5 m 30 6 km
1989 N. CALIFORNIA Earthquake 1.0 m 62 78 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m — 26 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m — 30 km
1865 N. CALIFORNIA Eruption + Earthquake — — 61 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (151 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 151 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SCU LIGHTNING COMPLEX (405,787 acres, 2020).

Year Name Acres Burned Distance
2020 SCU LIGHTNING COMPLEX 405,787 63 km
2020 CZU AUG LIGHTNING 85,894 62 km
2017 NUNS 56,883 78 km
2017 ATLAS 51,664 74 km
2007 LICK 47,424 84 km
2006 CANYON 36,851 82 km
1988 MILLER 35,750 81 km
2003 ANNIE 17,383 97 km
2024 CORRAL 16,138 62 km
2009 CORRAL 12,006 61 km
1995 VISION 11,931 72 km
1985 LEXINGTON 11,550 66 km
2015 WRAGG 8,455 87 km
2009 LOCKHEED 8,287 69 km
2003 BIRD 7,727 75 km
2014 MONTICELLO 6,984 93 km
1984 SITE 300 3 6,911 61 km
2005 TESLA 6,638 53 km
2003 DEL PUERTO 6,441 74 km
2016 COLD 6,289 93 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 49°F (9°C) 4.5 in Wettest
February 51°F (11°C) 3.8 in
March 53°F (12°C) 3.4 in
April 57°F (14°C) 1.4 in
May 60°F (16°C) 0.5 in
June 64°F (18°C) 0.1 in
July 62°F (17°C) 0.0 in Driest
August 68°F (20°C) 0.1 in Warmest
September 67°F (20°C) 0.3 in
October 63°F (17°C) 1.3 in
November 55°F (13°C) 3.1 in
December 49°F (9°C) 3.3 in Coldest

San Leandro has a seasonal temperature swing of 19°F / from 49°F in December to 68°F in August. Total annual precipitation is 21.8 inches, with January being the wettest month (4.5") and July the driest (0.0").

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