Weather & Climate in Long Barn, CA

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

Long Barn experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 38°F in January while summers reach 68°F in July. The area gets 290 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 55.5 inches (wetter than the 38-inch national average). The area receives 104.8 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 5,024 feet.

Temperature

38°F Jan (3°C) 68°F Jul (20°C)

Annual Average	50.3°F
	7% below US avg
January Average	38°F (3°C)
July Average	68°F (20°C)
Sunny Days	290 days/yr

Geography

Elevation	5,024 ft (1,531 m)
Area	2.9 sq mi (7.5 km²)
Population Density	7/sq mi
Coordinates	38.0933°N, 120.1347°W
Timezone	America/Los_Angeles
County	Calaveras County County
Nearest Airport	Merced Yosemite Regional (MCE) 58 miles away

Precipitation & Snow

Annual Rainfall 55.5"

46% above US avg

Snowfall 104.8"

Wettest Month (Jan) 7.80"

Driest Month (Jul) 0.28"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	86.6 / 100
Social Vulnerability	57.9 / 100
Community Resilience	39.5 / 100

Hazard Breakdown

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

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

Earthquake History

5,288 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.1.

Sep 12, 1994	4 km S of Carter Springs, Nevada	M6.1	91 km	14 km
Jul 8, 2021	Antelope Valley, CA	M6.0	72 km	7 km
Oct 24, 1990	3 km NE of Mono City, California	M5.8	89 km	11 km
May 15, 1999	9 km WSW of Aspen Springs, California	M5.5	132 km	3 km
Sep 18, 2004	27 km NW of Benton, California	M5.4	128 km	3 km
Sep 18, 2004	27 km NW of Benton, California	M5.4	130 km	0 km
Apr 11, 2020	30km SE of Bodie, CA	M5.2	123 km	8 km
Sep 12, 1994	8 km ESE of Mesa Vista, California	M5.1	85 km	-1 km
Jul 8, 2021	32km SE of Markleeville, CA	M5.0	72 km	7 km
Jun 9, 1998	8 km WNW of Aspen Springs, California	M4.9	130 km	5 km
Jul 15, 1998	8 km W of Aspen Springs, California	M4.9	131 km	4 km
Nov 30, 1997	2 km ESE of Mammoth Lakes, California	M4.9	116 km	5 km
Nov 22, 1997	3 km ESE of Mammoth Lakes, California	M4.9	117 km	5 km
Dec 22, 1995	California-Nevada border region	M4.9	82 km	4 km
Dec 28, 1995	9 km WNW of Topaz Lake, Nevada	M4.8	81 km	-1 km
Dec 31, 1997	9 km ESE of Mammoth Lakes, California	M4.8	122 km	4 km
Oct 30, 1998	4 km N of Tahoe Vista, California	M4.8	133 km	1 km
Oct 1, 2011	7 km SSE of Schurz, Nevada	M4.8	149 km	4 km
Jun 26, 2005	8 km NNW of Tahoe Vista, California	M4.8	135 km	-2 km
Apr 26, 2008	27km SE of Smith Valley, NV	M4.7	105 km	4 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Apr 27, 1953	EF2	91 km	0.1 mi	0
Mar 11, 2023	EF1	39 km	0.8 mi	0
Jan 10, 2023	EF1	55 km	0.4 mi	0
Nov 15, 2015	EF1	86 km	3.0 mi	0
Apr 14, 2006	EF1	91 km	0.5 mi	0
Dec 16, 2002	EF1	91 km	1.3 mi	0
Dec 12, 1996	EF1	72 km	0.6 mi	0
Nov 22, 1996	EF1	89 km	0.2 mi	0
Apr 19, 1988	EF1	89 km	0.2 mi	0
Mar 4, 1978	EF1	98 km	1.0 mi	0
Mar 4, 1978	EF1	80 km	2.5 mi	0
Mar 1, 1978	EF1	84 km	1.5 mi	0
Apr 1, 1958	EF1	90 km	2.0 mi	0
Jan 14, 2023	EF0	91 km	0.3 mi	0
Nov 18, 2020	EF0	96 km	4.4 mi	0
May 18, 2020	EF0	86 km	0.1 mi	0
Feb 2, 2019	EF0	82 km	0.2 mi	0
Apr 27, 2016	EF0	76 km	0.1 mi	0
Dec 24, 2015	EF0	89 km	0.2 mi	0
Jul 8, 2015	EF0	98 km	2.7 mi	0

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

Nearby Volcanoes

4 volcanoes within 200 km. Closest: Mono Lake Volcanic Field (97 km).

Name	Type	Elevation	Last Eruption	Distance
Mono Lake Volcanic Field	Pyroclastic cone(s)	2,121 m (6,959 ft)	1790	97 km
Mono-Inyo Craters	Lava dome(s)	2,796 m (9,173 ft)	1380	102 km
Mammoth Mountain	Lava dome(s)	3,369 m (11,053 ft)	1260	110 km
Soda Lakes	Maar(s)	1,251 m (4,104 ft)	Unknown	194 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: RIM (257,084 acres, 2013).

Year	Name	Acres Burned	Distance
2013	RIM	257,084	25 km
2021	CALDOR	226,583	71 km
2014	KING	99,070	100 km
2018	FERGUSON	97,307	59 km
2017	DETWILER	83,297	60 km
2015	BUTTE	72,894	44 km
2021	TAMARACK	70,171	78 km
1996	ACKERSON COMPLEX (ACKERSON)	58,161	34 km
1987	PAPER	49,296	20 km
1987	LARSON	49,250	44 km
1987	HAMM	39,333	34 km
2018	DONNELL	36,151	42 km
2008	TELEGRAPH	33,479	55 km
2020	SLINK	26,437	69 km
2002	CANNON	23,605	73 km
1992	CLEVELAND	21,835	86 km
2022	OAK	19,408	66 km
2020	NUMBERS	18,998	98 km
2015	WASHINGTON	18,485	72 km
1992	GULCH	18,019	32 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	38°F (3°C)	7.8 in	Wettest
February	38°F (3°C)	7.0 in
March	39°F (4°C)	6.5 in
April	44°F (7°C)	3.6 in
May	52°F (11°C)	1.3 in
June	60°F (15°C)	0.6 in
July	68°F (20°C)	0.3 in	Warmest, Driest
August	67°F (19°C)	0.4 in
September	61°F (16°C)	0.9 in
October	52°F (11°C)	2.4 in
November	42°F (6°C)	6.2 in
December	36°F (2°C)	6.6 in	Coldest

Long Barn has a seasonal temperature swing of 32°F / from 36°F in December to 68°F in July. Total annual precipitation is 43.7 inches, with January being the wettest month (7.8") and July the driest (0.3").

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