Weather & Climate in Casmalia, CA

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

Casmalia enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 53°F in January while summers reach 64°F in July / relatively mild seasonal variation. 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 13.3 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 279 feet.

Temperature

53°F Jan (12°C) 64°F Jul (18°C)

Annual Average	58.6°F
	9% above US avg
January Average	53°F (12°C)
July Average	64°F (18°C)
Sunny Days	330 days/yr

Geography

Elevation	279 ft (85 m)
Area	0.2 sq mi (0.5 km²)
Population Density	524/sq mi
Coordinates	34.8378°N, 120.5310°W
Timezone	America/Los_Angeles
County	Santa Barbara County County
Nearest Airport	San Luis Obispo County Regional (SBP) 25 miles away

Precipitation & Snow

Annual Rainfall 13.3"

65% below US avg

Wettest Month (Feb) 4.06"

Driest Month (Jun) 0.08"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively High
Risk Score	99.0 / 100
Social Vulnerability	60.2 / 100
Community Resilience	60.9 / 100

Hazard Breakdown

Tornado	Very Low
Hurricane	No Rating
Earthquake	Relatively High
Wildfire	Relatively High
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	Very Low
Landslide	Very High
Coastal Flood	Relatively Low
Tsunami	Very Low
Avalanche	Very Low

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

Earthquake History

2,296 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.

Sep 28, 2004	2004 Parkfield, California Earthquake	M6.0	110 km	8 km
Apr 5, 2018	31km SW of Santa Cruz Is. (E end), CA	M5.3	135 km	10 km
Aug 7, 2024	24 km SW of Lamont, CA	M5.2	134 km	12 km
Sep 17, 1991	22 km NW of San Simeon, California	M5.2	130 km	9 km
May 28, 1993	21km SW of Lamont, California	M5.2	135 km	21 km
Aug 20, 2023	7 km SE of Ojai, CA	M5.1	132 km	5 km
Sep 29, 2004	8 km NW of Parkfield, California	M5.0	124 km	11 km
Dec 20, 1994	3 km NW of Parkfield, California	M4.9	120 km	8 km
Sep 30, 2004	13 km NW of Parkfield, California	M4.9	128 km	10 km
Feb 24, 2016	6km SSW of Wasco, CA	M4.9	131 km	22 km
Nov 14, 1993	8 km NW of Parkfield, California	M4.8	124 km	11 km
May 29, 2013	6km W of Isla Vista, CA	M4.8	74 km	7 km
Sep 28, 2004	12 km SE of Parkfield, California	M4.7	109 km	6 km
Aug 7, 2024	25 km SW of Lamont, CA	M4.6	133 km	12 km
Apr 16, 2005	20km ESE of Maricopa, CA	M4.6	124 km	9 km
Mar 17, 2004	9 km WSW of Oak Shores, California	M4.5	111 km	4 km
May 16, 2005	5 km NW of Parkfield, California	M4.5	121 km	9 km
Aug 6, 2012	8 km NW of Parkfield, California	M4.5	124 km	11 km
Aug 8, 2024	22 km NW of Grapevine, CA	M4.4	136 km	12 km
Dec 24, 2000	9km WSW of Grapevine, CA	M4.4	138 km	13 km

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

Tornado History

11 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1. Total: 2 injuries.

Date	Rating	Distance	Path	Fatalities
Feb 7, 2024	EF1	33 km	0.7 mi	0
Feb 7, 2024	EF1	57 km	4.9 mi	0
Jan 3, 1977	EF1	79 km	0.1 mi	0
Feb 23, 2015	EF0	98 km	0.5 mi	0
Jan 19, 2010	EF0	75 km	0.1 mi	0
Mar 29, 2006	EF0	24 km	—	0
Feb 2, 2004	EF0	31 km	0.5 mi	0
Nov 29, 2001	EF0	16 km	0.1 mi	0
May 5, 1998	EF0	51 km	0.3 mi	0
Mar 24, 1994	EF0	89 km	0.1 mi	0
Dec 29, 1991	EF0	31 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: 3.4 m (11 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1812	S. CALIFORNIA	Eruption + Earthquake	3.4 m	1	92 km
1927	S. CALIFORNIA	Earthquake	1.8 m	—	22 km
1878	S. CALIFORNIA	Meteorological	1.0 m	1	42 km
1901	MONTEREY BAY, N. CALIFORNIA	Eruption + Earthquake	—	—	129 km

Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: ZACA (241,846 acres, 2007).

Year	Name	Acres Burned	Distance
2007	ZACA	241,846	81 km
1996	FIFTY-EIGHT	94,704	59 km
2009	LA BREA	84,213	47 km
1985	LAS PILITAS	75,841	50 km
1997	LOGAN	49,627	50 km
1994	41	48,441	63 km
1993	MARRE	44,309	54 km
2016	REY	33,323	79 km
2017	ALAMO	29,256	26 km
2017	WHITTIER CA-LBOR-001770	18,510	63 km
2021	ALISAL	17,677	54 km
1999	SPANISH	14,518	54 km
2006	PERKINS	14,342	76 km
2024	HURRICANE	13,488	89 km
2016	CANYON	12,749	27 km
1989	CHISPA	9,869	68 km
2008	GAP	9,368	72 km
2000	HARRIS	9,102	7 km
2009	JESUSITA	8,569	84 km
2002	SUDDEN RANCH	7,840	32 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	53°F (12°C)	4.0 in
February	54°F (12°C)	4.1 in	Wettest
March	54°F (12°C)	3.5 in
April	56°F (13°C)	1.3 in
May	58°F (14°C)	0.4 in
June	60°F (16°C)	0.1 in
July	64°F (18°C)	0.0 in	Warmest, Driest
August	63°F (17°C)	0.1 in
September	63°F (17°C)	0.4 in
October	61°F (16°C)	0.8 in
November	56°F (14°C)	2.1 in
December	52°F (11°C)	3.0 in	Coldest

Casmalia has a seasonal temperature swing of 12°F / from 52°F in December to 64°F in July. Total annual precipitation is 19.7 inches, with February being the wettest month (4.1") and July the driest (0.0").

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