Weather & Climate in Yermo, CA

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

Yermo enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 49°F in January while summers reach 90°F in July. 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 3.8 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 1,928 feet.

Temperature

49°F Jan (9°C) 90°F Jul (32°C)

Annual Average	68.0°F
	26% above US avg
January Average	49°F (9°C)
July Average	90°F (32°C)
Sunny Days	330 days/yr

Geography

Elevation	1,928 ft (588 m)
Area	0.7 sq mi (1.7 km²)
Population Density	1,302/sq mi
Coordinates	34.9067°N, 116.8233°W
Timezone	America/Los_Angeles
County	San Bernardino County County
Nearest Airport	San Bernardino International (SBD) 61 miles away

Precipitation & Snow

Annual Rainfall 3.8"

90% below US avg

Snowfall 0.2"

Wettest Month (Jan) 0.59"

Driest Month (Jun) 0.04"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very High
Risk Score	99.8 / 100
Social Vulnerability	33.2 / 100
Community Resilience	20.1 / 100

Hazard Breakdown

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

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

Earthquake History

14,497 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.3.

Jun 28, 1992	The 1992 Landers, California Earthquake	M7.3	86 km	0 km
Oct 16, 1999	The 1999 Hector Mine, California Earthquake	M7.1	61 km	14 km
Jul 6, 2019	Ridgecrest Earthquake Sequence	M7.1	119 km	8 km
Jul 4, 2019	Ridgecrest Earthquake Sequence	M6.4	108 km	11 km
Jun 28, 1992	The 1992 Big Bear, California Earthquake	M6.3	78 km	4 km
Apr 23, 1992	The 1992 Joshua Tree, California Earthquake	M6.1	115 km	12 km
Jun 28, 1991	The 1991 Sierra Madre, California Earthquake	M5.8	128 km	8 km
Oct 16, 1999	13km WSW of Ludlow, CA	M5.8	55 km	14 km
Jun 28, 1992	3km NE of Yucca Valley, California	M5.8	94 km	-1 km
Sep 20, 1995	16km NNE of Ridgecrest, California	M5.8	120 km	5 km
Jun 28, 1992	2km SSW of Joshua Tree, California	M5.7	99 km	6 km
Jun 29, 1992	3km ESE of Yucca Valley, California	M5.7	97 km	10 km
Jul 11, 1992	12km NW of California City, California	M5.7	118 km	10 km
Oct 16, 1999	7km ENE of Running Springs, CA	M5.6	77 km	6 km
Jun 28, 1992	11km SSE of Big Bear Lake, California	M5.5	83 km	10 km
Jun 4, 2020	17km S of Searles Valley, CA	M5.5	96 km	8 km
Feb 28, 1990	The 1990 Upland, California Earthquake	M5.5	117 km	3 km
Jul 6, 2019	15km ESE of Little Lake, CA	M5.5	139 km	5 km
Jun 28, 1992	0km E of Yucca Valley, CA	M5.5	95 km	8 km
Jul 6, 2019	20km E of Little Lake, CA	M5.4	136 km	7 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: EF2. Total: 3 injuries.

Date	Rating	Distance	Path	Fatalities
Sep 7, 1982	EF2	86 km	0.5 mi	0
Jun 25, 1954	EF2	46 km	0.1 mi	0
Aug 4, 2008	EF1	66 km	1.1 mi	0
May 18, 1997	EF1	48 km	3.5 mi	0
May 18, 1997	EF1	47 km	9.0 mi	0
May 11, 1997	EF1	55 km	0.2 mi	0
Sep 4, 1976	EF1	78 km	0.1 mi	0
Oct 22, 1974	EF1	91 km	0.1 mi	0
Sep 9, 2021	EF0	96 km	1.8 mi	0
May 7, 2017	EF0	60 km	0.0 mi	0
Jul 19, 2015	EF0	78 km	0.2 mi	0
Aug 18, 2013	EF0	49 km	1.0 mi	0
Aug 14, 2004	EF0	72 km	1.0 mi	0
Aug 14, 2004	EF0	87 km	1.0 mi	0
Jul 7, 2001	EF0	98 km	1.0 mi	0
Jun 6, 1997	EF0	70 km	0.2 mi	0
Mar 20, 1991	EF0	95 km	1.0 mi	0
Sep 29, 1990	EF0	8 km	0.2 mi	0
Aug 14, 1990	EF0	7 km	0.1 mi	0
Jul 21, 1986	EF0	28 km	0.2 mi	0

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

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
1855	S. CALIFORNIA	Eruption + Earthquake	—	—	147 km

Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: OLD (90,180 acres, 2003).

Year	Name	Acres Burned	Distance
2003	OLD	90,180	85 km
2006	MILLARD	86,585	90 km
1999	WILLOW	63,525	68 km
2003	GRAND PRIX	50,799	100 km
2016	BLUE CUT	36,856	90 km
2020	APPLE	32,374	97 km
2015	LAKE	30,421	85 km
2020	EL DORADO	22,300	93 km
2007	BUTLER 2	14,661	70 km
2007	SLIDE	13,190	80 km
1994	DEVILS	12,778	68 km
2016	PILOT	8,267	77 km
1993	OPAL 2	8,223	42 km
2009	SHEEP	7,451	93 km
2002	BLUECUT	7,199	87 km
2002	LOUISIANA	6,651	91 km
2007	LOS FLORES	4,834	73 km
1986	NSCRIPTION	4,710	42 km
1993	MILL CREEK	4,475	97 km
2015	NORTH	4,366	84 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	49°F (9°C)	0.6 in	Wettest
February	53°F (11°C)	0.6 in
March	57°F (14°C)	0.5 in
April	64°F (18°C)	0.2 in
May	72°F (22°C)	0.1 in
June	81°F (27°C)	0.0 in	Driest
July	90°F (32°C)	0.2 in	Warmest
August	87°F (30°C)	0.4 in
September	80°F (27°C)	0.3 in
October	69°F (20°C)	0.2 in
November	56°F (13°C)	0.2 in
December	48°F (9°C)	0.4 in	Coldest

Yermo has a seasonal temperature swing of 42°F / from 48°F in December to 90°F in July. Total annual precipitation is 3.7 inches, with January being the wettest month (0.6") and June the driest (0.0").

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