Weather & Climate in Clearlake Oaks, CA

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

Clearlake Oaks enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 44°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 21.8 inches (drier than the 38-inch national average). The area receives 1.4 inches of snow annually. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 1,330 feet.

Temperature

44°F Jan (7°C) 77°F Jul (25°C)

Annual Average	59.3°F
	10% above US avg
January Average	44°F (7°C)
July Average	77°F (25°C)
Sunny Days	326 days/yr

Geography

Elevation	1,330 ft (405 m)
Area	2.1 sq mi (5.5 km²)
Population Density	1,098/sq mi
Coordinates	39.0206°N, 122.6569°W
Timezone	America/Los_Angeles
County	Lake County County
Nearest Airport	Sacramento International (SMF) 62 miles away

Precipitation & Snow

Annual Rainfall 21.8"

43% below US avg

Snowfall 1.4"

Wettest Month (Jan) 6.30"

Driest Month (Jul) 0.08"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	93.0 / 100
Social Vulnerability	70.6 / 100
Community Resilience	24.5 / 100

Hazard Breakdown

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

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

Earthquake History

3,995 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	94 km	11 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	37 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	74 km	9 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	38 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	63 km	5 km
May 12, 2006	7 km W of Cobb, California	M4.7	26 km	4 km
Jan 19, 2008	31 km NW of Rancho Tehama Reserve, California	M4.7	129 km	2 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	21 km	1 km
Aug 18, 1999	0 km S of Bolinas, California	M4.6	124 km	8 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	36 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	23 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	27 km	2 km
Sep 25, 2012	3 km N of Talmage, California	M4.5	47 km	11 km
Jan 19, 2008	34 km WNW of Rancho Tehama Reserve, California	M4.5	128 km	10 km
Aug 3, 2006	5 km W of Glen Ellen, California	M4.5	73 km	9 km
Jun 8, 2024	7 km NW of The Geysers, CA	M4.5	27 km	4 km
Sep 19, 1992	7 km NW of Cobb, California	M4.5	21 km	3 km
Apr 24, 2007	7 km WSW of Cobb, California	M4.5	28 km	2 km
Jun 3, 2023	2km NW of The Geysers, CA	M4.5	28 km	4 km
Mar 14, 2013	5 km W of Cobb, California	M4.4	26 km	1 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Jun 1, 1958	EF2	87 km	15.0 mi	0
May 19, 1953	EF2	91 km	2.0 mi	0
Mar 26, 2014	EF1	78 km	1.0 mi	0
Mar 26, 2014	EF1	77 km	0.6 mi	0
Mar 26, 2014	EF1	80 km	0.7 mi	0
Oct 22, 2012	EF1	98 km	0.3 mi	0
Oct 22, 2012	EF1	89 km	2.0 mi	0
May 25, 2011	EF1	79 km	21.7 mi	0
May 25, 2011	EF1	68 km	26.4 mi	0
Mar 18, 2011	EF1	63 km	0.1 mi	0
Jan 27, 2005	EF1	60 km	0.5 mi	0
Dec 5, 1998	EF1	64 km	1.5 mi	0
Dec 23, 1996	EF1	89 km	6.0 mi	0
Feb 22, 1996	EF1	53 km	1.0 mi	0
Apr 17, 1993	EF1	73 km	0.5 mi	0
Jan 7, 1993	EF1	92 km	0.1 mi	0
Dec 2, 1992	EF1	71 km	1.0 mi	0
Dec 2, 1992	EF1	54 km	3.0 mi	0
Dec 2, 1992	EF1	72 km	7.5 mi	0
Feb 27, 1983	EF1	64 km	0.8 mi	0

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

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 0.1 m (0 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1906	N. CALIFORNIA	Eruption + Earthquake	0.1 m	—	148 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Clear Lake (11 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	11 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	191 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	29 km
2020	HENNESSEY	314,241	55 km
2015	ROCKY	96,125	22 km
2018	COUNTY	92,450	57 km
1996	FORK	83,209	22 km
2019	KINCADE	77,780	40 km
2015	VALLEY	77,507	26 km
2020	GLASS	68,020	53 km
2017	NUNS	56,883	76 km
2020	WALLBRIDGE	55,194	54 km
1987	MENDENHALL	54,162	67 km
2017	ATLAS	51,664	82 km
2018	RIVER	48,920	32 km
2004	RUMSEY	39,335	44 km
1999	SIXTEEN	37,162	37 km
2017	TUBBS	36,981	50 km
2017	REDWOOD VALLEY INCIDENT	36,545	60 km
1988	MILLER	35,750	82 km
2012	MILL	29,924	33 km
2001	TROUGH	25,270	42 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	44°F (7°C)	6.3 in	Wettest
February	46°F (8°C)	4.9 in
March	48°F (9°C)	4.0 in
April	52°F (11°C)	1.7 in
May	59°F (15°C)	0.5 in
June	67°F (19°C)	0.2 in
July	77°F (25°C)	0.1 in	Warmest, Driest
August	73°F (23°C)	0.2 in
September	68°F (20°C)	0.6 in
October	60°F (15°C)	1.9 in
November	49°F (10°C)	4.9 in
December	44°F (6°C)	5.4 in	Coldest

Clearlake Oaks has a seasonal temperature swing of 34°F / from 44°F in December to 77°F in July. Total annual precipitation is 30.8 inches, with January being the wettest month (6.3") and July the driest (0.1").

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