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Weather & Climate in Redwood City, CA

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

Redwood City enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 49°F in January while summers reach 65°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 31.3 inches. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 3 feet.

Temperature

49°F Jan (10°C) 65°F Jul (18°C)
Annual Average56.9°F
5% above US avg
January Average49°F (10°C)
July Average65°F (18°C)
Sunny Days331 days/yr

Geography

Elevation3 ft (1 m)
Area34.6 sq mi (89.7 km²)
Population Density4,262/sq mi
Coordinates37.5153°N, 122.2137°W
TimezoneAmerica/Los_Angeles
CountySan Mateo County County
Nearest AirportSan Francisco International (SFO)
11 miles away

Precipitation & Snow

Annual Rainfall 31.3"
18% below US avg
Snowfall 0.4"
Wettest Month (Jan) 4.13"
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

4,624 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 78 km 11 km
Apr 18, 1990 5 km NNW of Aromas, California M5.4 81 km 5 km
Aug 12, 1998 10 km SW of Ridgemark, California M5.1 108 km 9 km
Apr 18, 1990 4 km E of Interlaken, California M5.1 78 km 7 km
Jan 16, 1993 9 km E of Gilroy, California M4.9 86 km 7 km
Apr 18, 1990 4 km NNW of Aromas, California M4.9 82 km 6 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 98 km 9 km
Apr 23, 1995 22 km NNE of Soledad, California M4.9 136 km 7 km
Apr 19, 1996 2 km E of Aromas, California M4.9 88 km 5 km
May 14, 2002 5 km SSW of Gilroy, California M4.9 82 km 7 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 138 km 7 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 47 km 8 km
Apr 18, 1990 4 km N of Aromas, California M4.7 83 km 4 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 52 km 9 km
Aug 27, 2011 21 km NE of Soledad, California M4.6 138 km 8 km
Mar 24, 1991 1 km NNE of Interlaken, California M4.6 75 km 15 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 60 km 8 km
Sep 19, 2023 15 km SW of Westley, CA M4.5 81 km 4 km
Jan 12, 2011 9 km SSE of San Juan Bautista, California M4.5 104 km 8 km
Aug 3, 2006 5 km W of Glen Ellen, California M4.5 100 km 9 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
May 5, 1998 EF2 23 km 0.6 mi 0
Jan 11, 1951 EF2 18 km 5.7 mi 0
Dec 14, 2024 EF1 54 km 0.3 mi 0
Jan 23, 2010 EF1 59 km 1.6 mi 0
Mar 20, 2005 EF1 24 km 3.0 mi 0
Dec 20, 2001 EF1 72 km 0.5 mi 0
May 5, 1998 EF1 17 km 0.3 mi 0
Jan 14, 1980 EF1 30 km 0.3 mi 0
May 31, 1967 EF1 95 km 0.1 mi 0
Apr 1, 1965 EF1 70 km 0.1 mi 0
Apr 1, 1958 EF1 17 km 0.2 mi 0
Jan 6, 2019 EF0 64 km 0.1 mi 0
Jan 6, 2019 EF0 65 km 0.5 mi 0
Jan 6, 2016 EF0 98 km 0.6 mi 0
Dec 22, 2012 EF0 78 km 1.1 mi 0
Apr 11, 2012 EF0 87 km 0.3 mi 0
Apr 7, 2011 EF0 82 km 0.1 mi 0
Apr 14, 2007 EF0 79 km 0.2 mi 0
Dec 26, 2005 EF0 74 km 0.3 mi 0
Apr 8, 2005 EF0 87 km 1.5 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 23 km
1989 N. CALIFORNIA Earthquake 1.0 m 62 61 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m — 8 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m — 33 km
1865 N. CALIFORNIA Eruption + Earthquake — — 45 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (169 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 169 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 41 km
2017 NUNS 56,883 96 km
2017 ATLAS 51,664 94 km
2007 LICK 47,424 77 km
2006 CANYON 36,851 79 km
2003 ANNIE 17,383 91 km
2024 CORRAL 16,138 68 km
2009 CORRAL 12,006 65 km
1995 VISION 11,931 82 km
1985 LEXINGTON 11,550 49 km
2009 LOCKHEED 8,287 48 km
2003 BIRD 7,727 78 km
1984 SITE 300 3 6,911 67 km
2005 TESLA 6,638 59 km
2003 DEL PUERTO 6,441 72 km
2006 MIDWAY 6,243 63 km
2020 CREWS 5,802 87 km
2003 DEVIL 4,975 57 km
2020 WOODWARD 4,952 78 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 49°F (10°C) 4.1 in Coldest, Wettest
February 53°F (11°C) 3.5 in
March 54°F (12°C) 3.1 in
April 57°F (14°C) 1.3 in
May 60°F (15°C) 0.4 in
June 63°F (17°C) 0.1 in
July 65°F (18°C) 0.0 in Driest
August 66°F (19°C) 0.1 in Warmest
September 65°F (18°C) 0.2 in
October 61°F (16°C) 1.2 in
November 55°F (13°C) 2.9 in
December 49°F (10°C) 3.0 in

Redwood City has a seasonal temperature swing of 16°F / from 49°F in January to 66°F in August. Total annual precipitation is 19.8 inches, with January being the wettest month (4.1") and July the driest (0.0").

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