Weather & Climate in Dunnigan, CA

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

Dunnigan enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 47°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 20.5 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 79 feet.

Temperature

47°F Jan (8°C) 77°F Jul (25°C)

Annual Average	62.2°F
	15% above US avg
January Average	47°F (8°C)
July Average	77°F (25°C)
Sunny Days	326 days/yr

Geography

Elevation	79 ft (24 m)
Area	5.2 sq mi (13.5 km²)
Population Density	173/sq mi
Coordinates	38.8926°N, 121.9742°W
Timezone	America/Los_Angeles
County	Yolo County County
Nearest Airport	Sacramento International (SMF) 25 miles away

Precipitation & Snow

Annual Rainfall 20.5"

46% below US avg

Snowfall 0.0"

Wettest Month (Jan) 3.58"

Driest Month (Jul) 0.04"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	91.4 / 100
Social Vulnerability	24.2 / 100
Community Resilience	69.4 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Relatively Moderate
Wildfire	Relatively Low
Flood	Relatively Moderate
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 Low
Volcano	Very Low
Avalanche	Very Low

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

Earthquake History

4,213 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	81 km	11 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	86 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	69 km	9 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	71 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	117 km	5 km
May 12, 2006	7 km W of Cobb, California	M4.7	73 km	4 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	68 km	1 km
Aug 18, 1999	0 km S of Bolinas, California	M4.6	126 km	8 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	83 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	69 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	73 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	79 km	9 km
Jun 8, 2024	7 km NW of The Geysers, CA	M4.5	74 km	4 km
Sep 19, 1992	7 km NW of Cobb, California	M4.5	71 km	3 km
Apr 24, 2007	7 km WSW of Cobb, California	M4.5	72 km	2 km
Jun 3, 2023	2km NW of The Geysers, CA	M4.5	71 km	4 km
Mar 14, 2013	5 km W of Cobb, California	M4.4	71 km	1 km
Mar 1, 2011	8 km W of Cobb, California	M4.4	74 km	2 km
Apr 12, 2023	7km WNW of Cobb, CA	M4.4	72 km	2 km

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

Tornado History

82 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 7 injuries.

Date	Rating	Distance	Path	Fatalities
May 25, 2011	EF2	84 km	0.2 mi	0
Feb 10, 1994	EF2	78 km	0.3 mi	0
Feb 7, 1978	EF2	50 km	1.9 mi	0
May 19, 1953	EF2	97 km	2.0 mi	0
Dec 24, 2015	EF1	77 km	6.2 mi	0
Mar 26, 2014	EF1	78 km	0.6 mi	0
Mar 26, 2014	EF1	78 km	0.7 mi	0
Mar 26, 2014	EF1	76 km	1.0 mi	0
Oct 22, 2012	EF1	78 km	4.0 mi	0
Oct 22, 2012	EF1	35 km	2.0 mi	0
Oct 22, 2012	EF1	44 km	0.3 mi	0
May 25, 2011	EF1	83 km	21.7 mi	0
May 25, 2011	EF1	72 km	26.4 mi	0
Mar 18, 2011	EF1	80 km	0.1 mi	0
Jan 8, 2005	EF1	71 km	0.1 mi	0
Dec 5, 1998	EF1	80 km	1.5 mi	0
Feb 22, 1996	EF1	76 km	1.0 mi	0
Apr 17, 1993	EF1	72 km	0.5 mi	0
Jan 7, 1993	EF1	63 km	0.1 mi	0
Dec 17, 1992	EF1	70 km	5.0 mi	0

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

Tsunami History

2 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	133 km
1906	N. CALIFORNIA	Eruption + Earthquake	0.1 m	—	140 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Clear Lake (69 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	69 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	182 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: RANCH (427,048 acres, 2018).

Year	Name	Acres Burned	Distance
2018	RANCH	427,048	81 km
2020	HENNESSEY	314,241	40 km
2015	ROCKY	96,125	41 km
2018	COUNTY	92,450	28 km
1996	FORK	83,209	75 km
2019	KINCADE	77,780	74 km
2015	VALLEY	77,507	57 km
2020	GLASS	68,020	63 km
2017	NUNS	56,883	76 km
2020	WALLBRIDGE	55,194	95 km
2017	ATLAS	51,664	63 km
2018	RIVER	48,920	92 km
2004	RUMSEY	39,335	30 km
1999	SIXTEEN	37,162	32 km
2017	TUBBS	36,981	71 km
1988	49R	36,673	77 km
1988	MILLER	35,750	53 km
2012	MILL	29,924	74 km
2001	TROUGH	25,270	85 km
2008	HUMBOLDT	23,769	94 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	47°F (8°C)	3.6 in	Wettest
February	51°F (11°C)	3.0 in
March	55°F (13°C)	2.5 in
April	60°F (16°C)	0.9 in
May	68°F (20°C)	0.4 in
June	74°F (23°C)	0.2 in
July	77°F (25°C)	0.0 in	Warmest, Driest
August	76°F (24°C)	0.1 in
September	72°F (22°C)	0.4 in
October	64°F (18°C)	1.1 in
November	53°F (12°C)	2.7 in
December	46°F (8°C)	2.8 in	Coldest

Dunnigan has a seasonal temperature swing of 31°F / from 46°F in December to 77°F in July. Total annual precipitation is 17.6 inches, with January being the wettest month (3.6") and July the driest (0.0").

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