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Weather & Climate in Newark, CA

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

Newark enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 50°F in January while summers reach 67°F in July / relatively mild seasonal variation. 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 14.4 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 10 feet.

Temperature

50°F Jan (10°C) 67°F Jul (20°C)
Annual Average59.9°F
11% above US avg
January Average50°F (10°C)
July Average67°F (20°C)
Sunny Days330 days/yr

Geography

Elevation10 ft (3 m)
Area13.9 sq mi (36.0 km²)
Population Density3,387/sq mi
Coordinates37.5043°N, 122.0319°W
TimezoneAmerica/Los_Angeles
CountySan Mateo County County
Nearest AirportNorman Y Mineta San Jose International (SJC)
11 miles away

Precipitation & Snow

Annual Rainfall 14.4"
62% below US avg
Snowfall 0.0"
Wettest Month (Jan) 3.19"
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

4,113 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 83 km 11 km
Apr 18, 1990 5 km NNW of Aromas, California M5.4 72 km 5 km
Apr 18, 1990 4 km E of Interlaken, California M5.1 68 km 7 km
Aug 12, 1998 10 km SW of Ridgemark, California M5.1 98 km 9 km
Jan 16, 1993 9 km E of Gilroy, California M4.9 74 km 7 km
Apr 23, 1995 22 km NNE of Soledad, California M4.9 125 km 7 km
Apr 19, 1996 2 km E of Aromas, California M4.9 78 km 5 km
May 14, 2002 5 km SSW of Gilroy, California M4.9 71 km 7 km
Apr 18, 1990 4 km NNW of Aromas, California M4.9 72 km 6 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 103 km 9 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 145 km 7 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 32 km 8 km
Apr 18, 1990 4 km N of Aromas, California M4.7 73 km 4 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 38 km 9 km
Aug 27, 2011 21 km NE of Soledad, California M4.6 127 km 8 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 73 km 8 km
Mar 24, 1991 1 km NNE of Interlaken, California M4.6 66 km 15 km
Sep 19, 2023 15 km SW of Westley, CA M4.5 65 km 4 km
Aug 3, 2006 5 km W of Glen Ellen, California M4.5 107 km 9 km
Jan 12, 2011 9 km SSE of San Juan Bautista, California M4.5 94 km 8 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
May 5, 1998 EF2 15 km 0.6 mi 0
Mar 11, 1985 EF2 92 km 0.5 mi 0
Apr 27, 1953 EF2 92 km 0.1 mi 0
Jan 11, 1951 EF2 17 km 5.7 mi 0
Dec 14, 2024 EF1 51 km 0.3 mi 0
Jan 23, 2010 EF1 51 km 1.6 mi 0
Apr 14, 2006 EF1 92 km 0.5 mi 0
Mar 20, 2005 EF1 38 km 3.0 mi 0
Dec 20, 2001 EF1 64 km 0.5 mi 0
May 5, 1998 EF1 16 km 0.3 mi 0
Jan 14, 1980 EF1 14 km 0.3 mi 0
Mar 1, 1978 EF1 99 km 1.5 mi 0
May 31, 1967 EF1 83 km 0.1 mi 0
Apr 1, 1965 EF1 62 km 0.1 mi 0
Apr 1, 1958 EF1 31 km 0.2 mi 0
Jan 6, 2019 EF0 61 km 0.1 mi 0
Jan 6, 2019 EF0 61 km 0.5 mi 0
Jan 6, 2016 EF0 85 km 0.6 mi 0
Dec 24, 2015 EF0 96 km 0.2 mi 0
Dec 22, 2012 EF0 72 km 1.1 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 54 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m — 24 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m — 47 km
1865 N. CALIFORNIA Eruption + Earthquake — — 36 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (175 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 175 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 47 km
2020 CZU AUG LIGHTNING 85,894 43 km
2017 ATLAS 51,664 97 km
2007 LICK 47,424 62 km
2006 CANYON 36,851 63 km
2003 ANNIE 17,383 76 km
2024 CORRAL 16,138 53 km
2009 CORRAL 12,006 49 km
1995 VISION 11,931 95 km
1985 LEXINGTON 11,550 41 km
2009 LOCKHEED 8,287 50 km
2003 BIRD 7,727 62 km
1984 SITE 300 3 6,911 52 km
2005 TESLA 6,638 45 km
2003 DEL PUERTO 6,441 56 km
2006 MIDWAY 6,243 48 km
2020 CREWS 5,802 74 km
2003 DEVIL 4,975 41 km
2020 WOODWARD 4,952 91 km
2003 JUMP 4,817 47 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 50°F (10°C) 3.2 in Wettest
February 53°F (12°C) 2.7 in
March 55°F (13°C) 2.6 in
April 58°F (14°C) 1.1 in
May 61°F (16°C) 0.3 in
June 65°F (18°C) 0.1 in
July 67°F (20°C) 0.0 in Driest
August 67°F (20°C) 0.1 in Warmest
September 67°F (19°C) 0.2 in
October 63°F (17°C) 1.0 in
November 55°F (13°C) 2.3 in
December 49°F (10°C) 2.3 in Coldest

Newark has a seasonal temperature swing of 18°F / from 49°F in December to 67°F in August. Total annual precipitation is 15.9 inches, with January being the wettest month (3.2") and July the driest (0.0").

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