Weather & Climate in Petaluma Center, CA

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

Petaluma Center enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 48°F in January while summers reach 67°F in July / relatively mild seasonal variation. Annual precipitation totals 25.6 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 28 / among the cleanest air in the country. 86% of days have good air quality. The city sits at an elevation of 91 feet.

Temperature

48°F Jan (9°C) 67°F Jul (19°C)

Annual Average	58.0°F
	7% above US avg
January Average	48°F (9°C)
July Average	67°F (19°C)

Geography

Elevation	91 ft (28 m)
Area	1.2 sq mi (3.0 km²)
Population Density	697/sq mi
Coordinates	38.2507°N, 122.7888°W
Timezone	America/Los_Angeles
County	Marin County County
Nearest Airport	Metro Oakland International (OAK) 48 miles away

Precipitation & Snow

Annual Rainfall 25.6"

33% below US avg

Snowfall 0.0"

Wettest Month (Feb) 5.23"

Driest Month (Jul) 0.01"

Air Quality

AQI Median	28.0
Rating	Good
Good Days %	86.3%
Unhealthy Days	0

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	96.4 / 100
Social Vulnerability	24.7 / 100
Community Resilience	99.2 / 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	Relatively Low
Cold Wave	No Rating
Landslide	Relatively High
Coastal Flood	Very High
Tsunami	Relatively Moderate
Volcano	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

4,167 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	42 km	11 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	120 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	36 km	9 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	48 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	138 km	5 km
May 12, 2006	7 km W of Cobb, California	M4.7	63 km	4 km
May 21, 1996	8 km ESE of East Foothills, California	M4.7	136 km	8 km
Aug 11, 1993	14 km ESE of Alum Rock, California	M4.7	143 km	9 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	66 km	1 km
Aug 18, 1999	0 km S of Bolinas, California	M4.6	39 km	8 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	59 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	65 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	63 km	2 km
Sep 25, 2012	3 km N of Talmage, California	M4.5	107 km	11 km
Aug 3, 2006	5 km W of Glen Ellen, California	M4.5	22 km	9 km
Jun 8, 2024	7 km NW of The Geysers, CA	M4.5	63 km	4 km
Sep 19, 1992	7 km NW of Cobb, California	M4.5	68 km	3 km
Apr 24, 2007	7 km WSW of Cobb, California	M4.5	61 km	2 km
Jun 3, 2023	2km NW of The Geysers, CA	M4.5	60 km	4 km
Mar 14, 2013	5 km W of Cobb, California	M4.4	63 km	1 km

Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Tornado History

31 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 1 injury.

Date	Rating	Distance	Path	Fatalities
Jun 1, 1958	EF2	17 km	15.0 mi	0
Mar 18, 2011	EF1	24 km	0.1 mi	0
Jan 23, 2010	EF1	97 km	1.6 mi	0
Mar 20, 2005	EF1	74 km	3.0 mi	0
Jan 27, 2005	EF1	50 km	0.5 mi	0
Dec 5, 1998	EF1	24 km	1.5 mi	0
Dec 23, 1996	EF1	12 km	6.0 mi	0
Feb 22, 1996	EF1	34 km	1.0 mi	0
Dec 2, 1992	EF1	17 km	1.0 mi	0
Dec 2, 1992	EF1	19 km	7.5 mi	0
Dec 2, 1992	EF1	33 km	3.0 mi	0
Feb 27, 1983	EF1	24 km	0.8 mi	0
Nov 10, 1964	EF1	31 km	1.0 mi	0
Feb 17, 1959	EF1	50 km	0.5 mi	0
Apr 1, 1958	EF1	80 km	0.2 mi	0
Sep 28, 2019	EF0	98 km	1.7 mi	0
Apr 27, 2016	EF0	65 km	0.2 mi	0
Apr 7, 2011	EF0	58 km	0.1 mi	0
Mar 20, 2005	EF0	96 km	1.2 mi	0
Jan 11, 2005	EF0	72 km	0.1 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).

Tsunami History

4 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	86 km
1856	N. CALIFORNIA	Eruption + Earthquake	0.6 m	-	94 km
1906	N. CALIFORNIA	Eruption + Earthquake	0.1 m	-	66 km
1865	N. CALIFORNIA	Eruption + Earthquake	-	-	141 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (80 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	80 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: HENNESSEY (314,241 acres, 2020).

Year	Name	Acres Burned	Distance
2020	HENNESSEY	314,241	61 km
2015	ROCKY	96,125	79 km
2018	COUNTY	92,450	73 km
2019	KINCADE	77,780	47 km
2015	VALLEY	77,507	62 km
2020	GLASS	68,020	40 km
2017	NUNS	56,883	27 km
2020	WALLBRIDGE	55,194	45 km
2017	ATLAS	51,664	50 km
2018	RIVER	48,920	92 km
2004	RUMSEY	39,335	72 km
1999	SIXTEEN	37,162	73 km
2017	TUBBS	36,981	37 km
1988	MILLER	35,750	64 km
2017	POCKET	18,691	58 km
2012	SIXTEEN COMPLEX	18,191	94 km
2006	ZAM ASSIST	14,404	95 km
2008	WALKER	12,441	95 km
2004	GEYSERS	12,075	53 km
1995	VISION	11,931	24 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	48°F (9°C)	4.8 in
February	51°F (10°C)	5.2 in	Wettest
March	53°F (12°C)	3.3 in
April	56°F (13°C)	1.7 in
May	60°F (15°C)	0.9 in
June	64°F (18°C)	0.3 in
July	67°F (19°C)	0.0 in	Driest
August	67°F (19°C)	0.1 in	Warmest
September	67°F (19°C)	0.1 in
October	62°F (17°C)	1.3 in
November	54°F (12°C)	2.7 in
December	48°F (9°C)	5.2 in	Coldest

Petaluma Center has a seasonal temperature swing of 19°F / from 48°F in December to 67°F in August. Total annual precipitation is 25.6 inches, with February being the wettest month (5.2") and July the driest (0.0").

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