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Weather & Climate in Clyde, CA

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

Clyde enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 46°F in January while summers reach 70°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 19.4 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 50 feet.

Temperature

46°F Jan (8°C) 70°F Jul (21°C)
Annual Average58.2°F
8% above US avg
January Average46°F (8°C)
July Average70°F (21°C)
Sunny Days330 days/yr

Geography

Elevation50 ft (15 m)
Area0.1 sq mi (0.3 km²)
Population Density5,114/sq mi
Coordinates38.0254°N, 122.0280°W
TimezoneAmerica/Los_Angeles
CountyNapa County County
Nearest AirportMetro Oakland International (OAK)
24 miles away

Precipitation & Snow

Annual Rainfall 19.4"
49% below US avg
Snowfall 0.0"
Wettest Month (Jan) 4.80"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score95.3 / 100
Social Vulnerability38.5 / 100
Community Resilience76.0 / 100

Hazard Breakdown

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

Earthquake History

5,037 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 33 km 11 km
Apr 18, 1990 5 km NNW of Aromas, California M5.4 126 km 5 km
Aug 12, 1998 10 km SW of Ridgemark, California M5.1 150 km 9 km
Apr 18, 1990 4 km E of Interlaken, California M5.1 122 km 7 km
Jan 16, 1993 9 km E of Gilroy, California M4.9 123 km 7 km
Apr 19, 1996 2 km E of Aromas, California M4.9 132 km 5 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 52 km 9 km
May 14, 2002 5 km SSW of Gilroy, California M4.9 124 km 7 km
Apr 18, 1990 4 km NNW of Aromas, California M4.9 126 km 6 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 96 km 7 km
May 12, 2006 7 km W of Cobb, California M4.7 112 km 4 km
Apr 18, 1990 4 km N of Aromas, California M4.7 127 km 4 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 79 km 8 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 85 km 9 km
Jan 2, 2025 4 km NW of Cobb, CA M4.7 111 km 1 km
Mar 24, 1991 1 km NNE of Interlaken, California M4.6 121 km 15 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 59 km 8 km
Jan 11, 2000 6 km N of Geyserville, California M4.6 113 km 6 km
Feb 18, 2004 4 km WNW of Cobb, California M4.6 111 km 3 km
Jan 12, 2014 8 km W of Cobb, California M4.5 111 km 2 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: 4 injuries.

Date Rating Distance Path Fatalities
May 5, 1998 EF2 73 km 0.6 mi 0
Feb 7, 1978 EF2 90 km 1.9 mi 0
Jun 1, 1958 EF2 88 km 15.0 mi 0
Apr 27, 1953 EF2 100 km 0.1 mi 0
Jan 11, 1951 EF2 73 km 5.7 mi 0
Mar 18, 2011 EF1 76 km 0.1 mi 0
Jan 23, 2010 EF1 26 km 1.6 mi 0
Apr 14, 2006 EF1 100 km 0.5 mi 0
Mar 20, 2005 EF1 54 km 3.0 mi 0
Dec 5, 1998 EF1 75 km 1.5 mi 0
May 5, 1998 EF1 72 km 0.3 mi 0
Dec 23, 1996 EF1 83 km 6.0 mi 0
Feb 22, 1996 EF1 85 km 1.0 mi 0
Dec 2, 1992 EF1 90 km 3.0 mi 0
Dec 2, 1992 EF1 82 km 1.0 mi 0
Dec 2, 1992 EF1 87 km 7.5 mi 0
Apr 19, 1988 EF1 79 km 0.2 mi 0
Mar 22, 1983 EF1 97 km 2.0 mi 0
Feb 27, 1983 EF1 75 km 0.8 mi 0
Jan 14, 1980 EF1 62 km 0.3 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 37 km
1989 N. CALIFORNIA Earthquake 1.0 m 62 111 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m — 63 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m — 55 km
1865 N. CALIFORNIA Eruption + Earthquake — — 93 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (123 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 123 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 75 km
2020 HENNESSEY 314,241 70 km
2018 COUNTY 92,450 74 km
2020 CZU AUG LIGHTNING 85,894 99 km
2019 KINCADE 77,780 97 km
2015 VALLEY 77,507 99 km
2020 GLASS 68,020 74 km
2017 NUNS 56,883 55 km
2017 ATLAS 51,664 42 km
2004 RUMSEY 39,335 84 km
1999 SIXTEEN 37,162 90 km
2017 TUBBS 36,981 83 km
2006 CANYON 36,851 95 km
1988 MILLER 35,750 45 km
2024 CORRAL 16,138 66 km
2006 ZAM ASSIST 14,404 82 km
2009 CORRAL 12,006 68 km
1995 VISION 11,931 73 km
1985 LEXINGTON 11,550 98 km
2015 WRAGG 8,455 51 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 46°F (8°C) 4.8 in Coldest, Wettest
February 51°F (11°C) 4.1 in
March 54°F (12°C) 3.2 in
April 58°F (15°C) 1.2 in
May 63°F (17°C) 0.5 in
June 68°F (20°C) 0.1 in
July 70°F (21°C) 0.0 in Driest
August 71°F (22°C) 0.1 in Warmest
September 69°F (21°C) 0.3 in
October 63°F (17°C) 1.2 in
November 54°F (12°C) 3.2 in
December 47°F (8°C) 3.4 in

Clyde has a seasonal temperature swing of 25°F / from 46°F in January to 71°F in August. Total annual precipitation is 21.9 inches, with January being the wettest month (4.8") and July the driest (0.0").

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