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Weather & Climate in Pittsburg, CA

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

Pittsburg enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 48°F in January while summers reach 77°F in July. The area gets 326 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 24.8 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 62 feet.

Temperature

48°F Jan (9°C) 77°F Jul (25°C)
Annual Average62.1°F
15% above US avg
January Average48°F (9°C)
July Average77°F (25°C)
Sunny Days326 days/yr

Geography

Elevation62 ft (19 m)
Area17.7 sq mi (45.8 km²)
Population Density4,291/sq mi
Coordinates38.0168°N, 121.8969°W
TimezoneAmerica/Los_Angeles
CountySolano County County
Nearest AirportMetro Oakland International (OAK)
27 miles away

Precipitation & Snow

Annual Rainfall 24.8"
35% below US avg
Wettest Month (Jan) 3.82"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score97.0 / 100
Social Vulnerability25.2 / 100
Community Resilience71.8 / 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 Low
Winter Weather Very Low
Lightning Relatively Moderate
Drought Relatively High
Cold Wave No Rating
Landslide Relatively High
Coastal Flood Relatively High
Tsunami Very Low
Volcano Very Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

5,064 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 43 km 11 km
Apr 18, 1990 5 km NNW of Aromas, California M5.4 122 km 5 km
Apr 18, 1990 4 km E of Interlaken, California M5.1 119 km 7 km
Aug 12, 1998 10 km SW of Ridgemark, California M5.1 146 km 9 km
Jan 16, 1993 9 km E of Gilroy, California M4.9 117 km 7 km
Apr 19, 1996 2 km E of Aromas, California M4.9 128 km 5 km
Apr 18, 1990 4 km NNW of Aromas, California M4.9 123 km 6 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 61 km 9 km
May 14, 2002 5 km SSW of Gilroy, California M4.9 120 km 7 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 105 km 7 km
May 12, 2006 7 km W of Cobb, California M4.7 120 km 4 km
Apr 18, 1990 4 km N of Aromas, California M4.7 123 km 4 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 75 km 8 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 81 km 9 km
Jan 2, 2025 4 km NW of Cobb, CA M4.7 119 km 1 km
Mar 24, 1991 1 km NNE of Interlaken, California M4.6 118 km 15 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 70 km 8 km
Jan 11, 2000 6 km N of Geyserville, California M4.6 122 km 6 km
Feb 18, 2004 4 km WNW of Cobb, California M4.6 119 km 3 km
Jan 12, 2014 8 km W of Cobb, California M4.5 119 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

83 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 85 km 1.9 mi 0
Jun 1, 1958 EF2 99 km 15.0 mi 0
Apr 27, 1953 EF2 89 km 0.1 mi 0
Jan 11, 1951 EF2 75 km 5.7 mi 0
Jan 10, 2023 EF1 100 km 0.4 mi 0
Mar 18, 2011 EF1 86 km 0.1 mi 0
Jan 23, 2010 EF1 16 km 1.6 mi 0
Apr 14, 2006 EF1 89 km 0.5 mi 0
Mar 20, 2005 EF1 61 km 3.0 mi 0
Dec 5, 1998 EF1 85 km 1.5 mi 0
May 5, 1998 EF1 74 km 0.3 mi 0
Dec 23, 1996 EF1 94 km 6.0 mi 0
Dec 12, 1996 EF1 96 km 0.6 mi 0
Feb 22, 1996 EF1 94 km 1.0 mi 0
Dec 2, 1992 EF1 100 km 3.0 mi 0
Dec 2, 1992 EF1 97 km 7.5 mi 0
Dec 2, 1992 EF1 92 km 1.0 mi 0
Apr 19, 1988 EF1 68 km 0.2 mi 0
Apr 19, 1988 EF1 97 km 1.0 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 40 km
1989 N. CALIFORNIA Earthquake 1.0 m 62 109 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m — 68 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m — 64 km
1865 N. CALIFORNIA Eruption + Earthquake — — 91 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (130 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 130 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 68 km
2020 HENNESSEY 314,241 75 km
2018 COUNTY 92,450 77 km
2020 GLASS 68,020 82 km
2017 NUNS 56,883 65 km
2017 ATLAS 51,664 49 km
2007 LICK 47,424 97 km
2004 RUMSEY 39,335 89 km
1999 SIXTEEN 37,162 95 km
2017 TUBBS 36,981 92 km
2006 CANYON 36,851 88 km
1988 MILLER 35,750 49 km
2024 CORRAL 16,138 57 km
2006 ZAM ASSIST 14,404 82 km
2018 WAVERLY 12,238 92 km
2009 CORRAL 12,006 59 km
1995 VISION 11,931 85 km
1985 LEXINGTON 11,550 97 km
1996 SCOTT 8,828 96 km
2015 WRAGG 8,455 54 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 48°F (9°C) 3.8 in Wettest
February 51°F (11°C) 3.2 in
March 55°F (13°C) 2.3 in
April 59°F (15°C) 0.9 in
May 64°F (18°C) 0.4 in
June 68°F (20°C) 0.1 in
July 77°F (25°C) 0.0 in Warmest, Driest
August 71°F (21°C) 0.1 in
September 69°F (20°C) 0.2 in
October 63°F (17°C) 1.0 in
November 54°F (12°C) 2.5 in
December 47°F (8°C) 2.6 in Coldest

Pittsburg has a seasonal temperature swing of 30°F / from 47°F in December to 77°F in July. Total annual precipitation is 17.2 inches, with January being the wettest month (3.8") and July the driest (0.0").

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