Weather & Climate in Bonita, CA

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

Bonita enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 57°F in January while summers reach 70°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 9.2 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 257 feet.

Temperature

57°F Jan (14°C) 70°F Jul (21°C)

Annual Average	63.3°F
	17% above US avg
January Average	57°F (14°C)
July Average	70°F (21°C)
Sunny Days	330 days/yr

Geography

Elevation	257 ft (78 m)
Area	5.1 sq mi (13.3 km²)
Population Density	2,657/sq mi
Coordinates	32.6732°N, 117.0061°W
Timezone	America/Los_Angeles
County	San Diego County County
Nearest Airport	San Diego International (SAN) 11 miles away

Precipitation & Snow

Annual Rainfall 9.2"

76% below US avg

Snowfall 0.0"

Wettest Month (Mar) 2.40"

Driest Month (Jul) 0.04"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very High
Risk Score	99.7 / 100
Social Vulnerability	24.8 / 100
Community Resilience	8.3 / 100

Hazard Breakdown

Tornado	Relatively Low
Hurricane	Very Low
Earthquake	Relatively High
Wildfire	Very High
Flood	Very High
Hail	Relatively Moderate
Strong Wind	Relatively Moderate
Heat Wave	Relatively High
Winter Weather	Relatively Low
Lightning	Relatively Moderate
Drought	Relatively Low
Cold Wave	Very Low
Landslide	Relatively High
Coastal Flood	Relatively Moderate
Tsunami	Relatively Low
Volcano	Very Low
Avalanche	Very Low

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

Earthquake History

7,285 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.7.

Jun 15, 2010	8km ESE of Ocotillo, CA	M5.7	103 km	9 km
Jul 7, 2010	20km NNW of Borrego Springs, CA	M5.4	96 km	12 km
Aug 26, 2012	4km NNW of Brawley, CA	M5.4	142 km	8 km
Aug 26, 2012	5km NNW of Brawley, CA	M5.3	141 km	8 km
Mar 23, 1994	35km E of Maneadero, B.C., MX	M5.3	129 km	5 km
Apr 4, 2010	15km SSW of Progreso, B.C., MX	M5.3	131 km	10 km
Jun 5, 2021	11km W of Calipatria, CA	M5.3	138 km	6 km
Apr 14, 2025	5 km S of Julian, CA	M5.2	56 km	14 km
Jun 12, 2005	10km ESE of Anza, CA	M5.2	104 km	13 km
Jun 10, 2016	20km NNW of Borrego Springs, CA	M5.2	99 km	12 km
Oct 31, 2001	16km ESE of Anza, CA	M5.0	104 km	14 km
Jun 15, 2004	67km SE of San Clemente Is. (SE tip), CA	M5.0	93 km	10 km
Apr 5, 2010	20km ESE of Ocotillo, CA	M5.0	112 km	1 km
Aug 27, 2012	5km NNE of Brawley, CA	M4.9	144 km	4 km
Apr 5, 2010	19km ESE of Ocotillo, CA	M4.9	112 km	14 km
May 22, 2010	17km WNW of Progreso, B.C., MX	M4.9	117 km	8 km
Jul 26, 1997	16km N of Borrego Springs, California	M4.9	101 km	11 km
Aug 26, 2012	5km NW of Brawley, CA	M4.9	140 km	4 km
Apr 4, 2020	17km ESE of Anza, CA	M4.9	102 km	10 km
Jun 29, 1992	13km ENE of Thousand Palms, CA	M4.8	150 km	1 km

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

Tornado History

27 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1. Total: 4 injuries.

Date	Rating	Distance	Path	Fatalities
Feb 19, 2005	EF1	91 km	2.8 mi	0
Nov 10, 2000	EF1	31 km	0.4 mi	0
Jan 29, 1998	EF1	50 km	0.5 mi	0
Mar 27, 1991	EF1	55 km	0.2 mi	0
Mar 19, 1991	EF1	12 km	1.0 mi	0
Feb 20, 1980	EF1	22 km	0.1 mi	0
Dec 18, 1978	EF1	68 km	0.8 mi	0
Oct 8, 1961	EF1	64 km	0.1 mi	0
Apr 13, 1956	EF1	8 km	0.1 mi	0
Sep 22, 2007	EF0	47 km	0.1 mi	0
Mar 11, 2006	EF0	48 km	2.0 mi	0
Mar 10, 2006	EF0	50 km	0.2 mi	0
Feb 23, 2005	EF0	8 km	0.1 mi	0
Feb 19, 2005	EF0	84 km	2.2 mi	0
Feb 19, 2005	EF0	80 km	2.5 mi	0
Oct 17, 2004	EF0	68 km	0.2 mi	0
Jul 12, 1999	EF0	67 km	0.1 mi	0
Feb 8, 1998	EF0	47 km	3.0 mi	0
May 20, 1997	EF0	94 km	0.1 mi	0
Dec 7, 1992	EF0	64 km	0.1 mi	0

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

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 1.2 m (4 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1862	S. CALIFORNIA	Eruption + Earthquake	1.2 m	—	18 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Salton Buttes (142 km).

Name	Type	Elevation	Last Eruption	Distance
Salton Buttes	Lava dome(s)	-40 m (-131 ft)	210	142 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: CEDAR (268,362 acres, 2003).

Year	Name	Acres Burned	Distance
2003	CEDAR	268,362	37 km
2007	WITCH	167,551	50 km
2007	HARRIS	90,443	22 km
2002	PINES	65,407	66 km
2003	PARADISE	55,995	60 km
2007	POOMACHA	47,496	70 km
2003	MINE/OTAY	37,232	16 km
2008	YELLOW	33,232	90 km
2020	INDIA	24,193	90 km
2003	COYOTE	19,215	89 km
2007	AMMO FIRE	19,213	86 km
1993	GUEJITO	17,141	50 km
2006	HORSE	16,659	37 km
2020	VALLEY	16,517	30 km
1986	UNNAMED	16,390	95 km
1989	VAIL	15,632	83 km
2014	PULGAS	14,937	80 km
2011	EAGLE	14,743	87 km
1996	OTAY 322	12,238	15 km
2012	WILSON	12,048	77 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	57°F (14°C)	2.3 in	Coldest
February	58°F (15°C)	2.2 in
March	59°F (15°C)	2.4 in	Wettest
April	62°F (17°C)	0.9 in
May	65°F (18°C)	0.2 in
June	68°F (20°C)	0.1 in
July	70°F (21°C)	0.0 in	Driest
August	74°F (23°C)	0.1 in	Warmest
September	72°F (22°C)	0.2 in
October	68°F (20°C)	0.4 in
November	62°F (17°C)	1.3 in
December	57°F (14°C)	1.5 in

Bonita has a seasonal temperature swing of 17°F / from 57°F in January to 74°F in August. Total annual precipitation is 11.9 inches, with March being the wettest month (2.4") and July the driest (0.0").

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