Weather & Climate in Guinda, CA

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

Guinda enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 47°F in January while summers reach 69°F in July. The area gets 302 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 39.7 inches. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 383 feet.

Temperature

47°F Jan (8°C) 69°F Jul (21°C)

Annual Average	57.4°F
	6% above US avg
January Average	47°F (8°C)
July Average	69°F (21°C)
Sunny Days	302 days/yr

Geography

Elevation	383 ft (117 m)
Area	1.1 sq mi (2.9 km²)
Population Density	89/sq mi
Coordinates	38.8274°N, 122.1984°W
Timezone	America/Los_Angeles
County	Napa County County
Nearest Airport	Sacramento International (SMF) 34 miles away

Precipitation & Snow

Annual Rainfall 39.7"

5% above US avg

Wettest Month (Jan) 6.30"

Driest Month (Jul) 0.04"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	95.3 / 100
Social Vulnerability	38.5 / 100
Community Resilience	76.0 / 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	Very High
Cold Wave	No Rating
Landslide	Relatively High
Coastal Flood	Relatively Moderate
Tsunami	Very Low
Volcano	Very Low
Avalanche	Very Low

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

Earthquake History

4,102 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	69 km	11 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	76 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	53 km	9 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	50 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	106 km	5 km
May 12, 2006	7 km W of Cobb, California	M4.7	53 km	4 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	48 km	1 km
Aug 18, 1999	0 km S of Bolinas, California	M4.6	111 km	8 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	62 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	49 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	54 km	2 km
Sep 25, 2012	3 km N of Talmage, California	M4.5	92 km	11 km
Aug 3, 2006	5 km W of Glen Ellen, California	M4.5	62 km	9 km
Jun 8, 2024	7 km NW of The Geysers, CA	M4.5	54 km	4 km
Sep 19, 1992	7 km NW of Cobb, California	M4.5	52 km	3 km
Apr 24, 2007	7 km WSW of Cobb, California	M4.5	52 km	2 km
Jun 3, 2023	2km NW of The Geysers, CA	M4.5	50 km	4 km
Mar 14, 2013	5 km W of Cobb, California	M4.4	51 km	1 km
Mar 1, 2011	8 km W of Cobb, California	M4.4	54 km	2 km
Apr 12, 2023	7km WNW of Cobb, CA	M4.4	53 km	2 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 25, 2011	EF2	99 km	0.2 mi	0
Feb 10, 1994	EF2	94 km	0.3 mi	0
Feb 7, 1978	EF2	66 km	1.9 mi	0
Jun 1, 1958	EF2	91 km	15.0 mi	0
Dec 24, 2015	EF1	95 km	6.2 mi	0
Mar 26, 2014	EF1	83 km	1.0 mi	0
Mar 26, 2014	EF1	84 km	0.6 mi	0
Mar 26, 2014	EF1	85 km	0.7 mi	0
Oct 22, 2012	EF1	64 km	0.3 mi	0
Oct 22, 2012	EF1	56 km	2.0 mi	0
Oct 22, 2012	EF1	99 km	4.0 mi	0
May 25, 2011	EF1	77 km	26.4 mi	0
May 25, 2011	EF1	88 km	21.7 mi	0
Mar 18, 2011	EF1	61 km	0.1 mi	0
Jan 27, 2005	EF1	83 km	0.5 mi	0
Jan 8, 2005	EF1	88 km	0.1 mi	0
Dec 5, 1998	EF1	61 km	1.5 mi	0
Dec 23, 1996	EF1	90 km	6.0 mi	0
Feb 22, 1996	EF1	56 km	1.0 mi	0
Apr 17, 1993	EF1	78 km	0.5 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	126 km
1856	N. CALIFORNIA	Eruption + Earthquake	0.6 m	—	148 km
1906	N. CALIFORNIA	Eruption + Earthquake	0.1 m	—	128 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Clear Lake (52 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	52 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	194 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	70 km
2020	HENNESSEY	314,241	24 km
2015	ROCKY	96,125	24 km
2018	COUNTY	92,450	17 km
1996	FORK	83,209	63 km
2019	KINCADE	77,780	53 km
2015	VALLEY	77,507	36 km
2020	GLASS	68,020	43 km
2017	NUNS	56,883	59 km
2020	WALLBRIDGE	55,194	74 km
2017	ATLAS	51,664	52 km
2018	RIVER	48,920	75 km
2004	RUMSEY	39,335	10 km
1999	SIXTEEN	37,162	12 km
2017	TUBBS	36,981	51 km
1988	49R	36,673	97 km
1988	MILLER	35,750	45 km
2012	MILL	29,924	66 km
2001	TROUGH	25,270	77 km
2017	POCKET	18,691	60 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	47°F (8°C)	6.3 in	Wettest
February	48°F (9°C)	4.9 in
March	51°F (11°C)	4.0 in
April	56°F (13°C)	1.7 in
May	63°F (17°C)	0.5 in
June	70°F (21°C)	0.2 in
July	69°F (21°C)	0.0 in	Driest
August	75°F (24°C)	0.1 in	Warmest
September	71°F (21°C)	0.5 in
October	62°F (17°C)	1.7 in
November	51°F (11°C)	4.5 in
December	45°F (7°C)	5.0 in	Coldest

Guinda has a seasonal temperature swing of 29°F / from 45°F in December to 75°F in August. Total annual precipitation is 29.5 inches, with January being the wettest month (6.3") and July the driest (0.0").

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