Weather & Climate in West Sacramento, CA

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

West Sacramento enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 76°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 18.0 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

47°F Jan (8°C) 76°F Jul (25°C)

Annual Average	61.2°F
	13% above US avg
January Average	47°F (8°C)
July Average	76°F (25°C)
Sunny Days	330 days/yr

Geography

Elevation	10 ft (3 m)
Area	22.9 sq mi (59.2 km²)
Population Density	2,538/sq mi
Coordinates	38.5544°N, 121.5487°W
Timezone	America/Los_Angeles
County	Sacramento County County
Nearest Airport	Sacramento International (SMF) 10 miles away

Precipitation & Snow

Annual Rainfall 18.0"

53% below US avg

Wettest Month (Jan) 3.86"

Driest Month (Jul) 0.04"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	98.1 / 100
Social Vulnerability	37.4 / 100
Community Resilience	57.0 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Earthquake	Relatively High
Wildfire	Relatively Moderate
Flood	Relatively High
Hail	Relatively Low
Strong Wind	Very Low
Heat Wave	Relatively Moderate
Winter Weather	Very Low
Lightning	Relatively Moderate
Drought	Relatively High
Cold Wave	No Rating
Landslide	Relatively Low
Coastal Flood	No Rating
Volcano	Very Low

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

Earthquake History

4,164 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	77 km	11 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	139 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	78 km	9 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	114 km	4 km
May 21, 1996	8 km ESE of East Foothills, California	M4.7	134 km	8 km
Aug 11, 1993	14 km ESE of Alum Rock, California	M4.7	139 km	9 km
May 7, 2021	19km NW of Truckee, CA	M4.7	147 km	10 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	110 km	1 km
Aug 18, 1999	0 km S of Bolinas, California	M4.6	123 km	8 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	121 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	110 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	114 km	2 km
Sep 19, 2023	15 km SW of Westley, CA	M4.5	126 km	4 km
Aug 3, 2006	5 km W of Glen Ellen, California	M4.5	93 km	9 km
Jun 8, 2024	7 km NW of The Geysers, CA	M4.5	114 km	4 km
Sep 19, 1992	7 km NW of Cobb, California	M4.5	113 km	3 km
Apr 24, 2007	7 km WSW of Cobb, California	M4.5	112 km	2 km
Jun 3, 2023	2km NW of The Geysers, CA	M4.5	110 km	4 km
Mar 14, 2013	5 km W of Cobb, California	M4.4	111 km	1 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: 1 injury.

Date	Rating	Distance	Path	Fatalities
Feb 7, 1978	EF2	18 km	1.9 mi	0
Jan 10, 2023	EF1	87 km	0.4 mi	0
Dec 24, 2015	EF1	41 km	6.2 mi	0
Oct 22, 2012	EF1	67 km	4.0 mi	0
Oct 22, 2012	EF1	58 km	0.3 mi	0
Oct 22, 2012	EF1	57 km	2.0 mi	0
Jan 23, 2010	EF1	74 km	1.6 mi	0
Jan 8, 2005	EF1	100 km	0.1 mi	0
Jan 7, 1993	EF1	97 km	0.1 mi	0
Dec 17, 1992	EF1	86 km	5.0 mi	0
Apr 19, 1988	EF1	55 km	0.2 mi	0
Apr 19, 1988	EF1	36 km	1.0 mi	0
Mar 22, 1983	EF1	25 km	2.0 mi	0
Jun 28, 1970	EF1	91 km	2.3 mi	0
May 31, 1967	EF1	69 km	0.1 mi	0
Jan 14, 2023	EF0	44 km	0.3 mi	0
Nov 8, 2022	EF0	32 km	0.8 mi	0
Nov 18, 2020	EF0	48 km	4.4 mi	0
May 18, 2020	EF0	48 km	0.1 mi	0
Sep 28, 2019	EF0	18 km	1.7 mi	0

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

Tsunami History

3 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	107 km
1856	N. CALIFORNIA	Eruption + Earthquake	0.6 m	—	134 km
1906	N. CALIFORNIA	Eruption + Earthquake	0.1 m	—	126 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (116 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	116 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	64 km
2014	KING	99,070	97 km
2015	ROCKY	96,125	88 km
2018	COUNTY	92,450	55 km
2022	MOSQUITO	77,858	92 km
2015	VALLEY	77,507	96 km
2015	BUTTE	72,894	89 km
2020	GLASS	68,020	87 km
2017	NUNS	56,883	86 km
2017	ATLAS	51,664	64 km
2004	RUMSEY	39,335	67 km
1999	SIXTEEN	37,162	73 km
2017	TUBBS	36,981	98 km
1988	49R	36,673	82 km
1988	MILLER	35,750	49 km
2012	SIXTEEN COMPLEX	18,191	83 km
2017	CASCADE	16,155	91 km
2006	ZAM ASSIST	14,404	38 km
2008	WALKER	12,441	99 km
2018	WAVERLY	12,238	87 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	47°F (8°C)	3.9 in	Wettest
February	51°F (11°C)	3.4 in
March	55°F (13°C)	2.8 in
April	60°F (15°C)	1.0 in
May	66°F (19°C)	0.4 in
June	72°F (22°C)	0.2 in
July	76°F (25°C)	0.0 in	Warmest, Driest
August	74°F (23°C)	0.1 in
September	71°F (22°C)	0.3 in
October	64°F (18°C)	1.0 in
November	53°F (12°C)	2.6 in
December	46°F (8°C)	2.6 in	Coldest

West Sacramento has a seasonal temperature swing of 30°F / from 46°F in December to 76°F in July. Total annual precipitation is 18.2 inches, with January being the wettest month (3.9") and July the driest (0.0").

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