Weather & Climate in Round Mountain, CA

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

Round Mountain experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 34°F in January while summers reach 69°F in July. The area gets 308 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 28.6 inches (drier than the 38-inch national average). The area receives 44.5 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 2,104 feet.

Temperature

34°F Jan (1°C) 69°F Jul (20°C)

Annual Average	49.0°F
	9% below US avg
January Average	34°F (1°C)
July Average	69°F (20°C)
Sunny Days	308 days/yr

Geography

Elevation	2,104 ft (641 m)
Area	1.7 sq mi (4.4 km²)
Population Density	88/sq mi
Coordinates	40.7975°N, 121.9380°W
Timezone	America/Los_Angeles
County	Shasta County County
Nearest Airport	Redding Regional (RDD) 28 miles away

Precipitation & Snow

Annual Rainfall 28.6"

25% below US avg

Snowfall 44.5"

Wettest Month (Jan) 8.70"

Driest Month (Jul) 0.24"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	93.4 / 100
Social Vulnerability	41.1 / 100
Community Resilience	47.7 / 100

Hazard Breakdown

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

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

Earthquake History

1,421 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.7.

May 24, 2013	2 km NNE of Canyondam, California	M5.7	100 km	8 km
May 11, 2023	Lake Almanor Earthquake	M5.5	96 km	6 km
Apr 30, 2008	3 km NNW of Burnt Ranch, California	M5.4	131 km	28 km
May 12, 2023	4km NW of Canyondam, CA	M5.2	97 km	6 km
Nov 26, 1998	7km NW of Redding, CA	M5.1	44 km	25 km
Sep 8, 2023	12 km NE of Burney, CA	M5.0	36 km	16 km
May 24, 2013	1km NNW of Canyondam, CA	M4.9	100 km	4 km
Jan 19, 2008	31 km NW of Rancho Tehama Reserve, California	M4.7	95 km	2 km
Nov 26, 1998	5km NNW of Redding, CA	M4.6	44 km	25 km
Jul 21, 1998	4 km NNW of Redding, California	M4.5	44 km	23 km
Jan 19, 2008	34 km WNW of Rancho Tehama Reserve, California	M4.5	99 km	10 km
Aug 28, 2016	8 km ESE of Mad River, California	M4.5	130 km	36 km
Mar 9, 1992	8 km SE of Hyampom, California	M4.4	124 km	33 km
May 10, 2005	10 km NW of Burney, California	M4.4	22 km	17 km
Apr 5, 2024	6 km NW of Belden, CA	M4.4	100 km	8 km
Mar 27, 1997	14km SW of Manton, CA	M4.4	52 km	8 km
Jun 14, 1991	8 km SW of Hat Creek, California	M4.4	29 km	11 km
Dec 20, 2000	12 km NNW of Burney, California	M4.4	30 km	17 km
Nov 5, 1997	3 km ENE of East Quincy, California	M4.4	131 km	-1 km
May 17, 1995	18 km WSW of Paskenta, California	M4.4	129 km	3 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
Sep 24, 1986	EF2	97 km	2.0 mi	0
May 9, 1980	EF2	78 km	0.1 mi	0
Mar 5, 1978	EF1	91 km	0.1 mi	0
Jan 4, 2021	EF0	94 km	2.7 mi	0
Jan 4, 2021	EF0	99 km	0.8 mi	0
Apr 4, 2013	EF0	75 km	0.8 mi	0
Feb 19, 2013	EF0	85 km	0.5 mi	0
Mar 5, 1978	EF0	91 km	0.1 mi	0
Mar 5, 1978	EF0	56 km	0.1 mi	0

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

Nearby Volcanoes

3 volcanoes within 200 km. Closest: Lassen Volcanic Center (50 km).

Name	Type	Elevation	Last Eruption	Distance
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	50 km
Shasta	Stratovolcano	4,317 m (14,163 ft)	1250	71 km
Medicine Lake	Shield	2,412 m (7,913 ft)	1060	96 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: CARR (233,710 acres, 2018).

Year	Name	Acres Burned	Distance
2018	CARR	233,710	56 km
2021	HAYPRESS	204,549	95 km
2021	ANTELOPE	141,960	95 km
1990	CAMPBELL	128,266	85 km
2018	DELTA	63,732	50 km
1992	FOUNTAIN	62,340	9 km
1999	GUN 2	61,203	70 km
2020	ZOGG	56,941	71 km
2012	BAGLEY	47,731	28 km
2018	HIRZ	46,700	35 km
1994	BARKLEY	44,256	77 km
2014	BALD	39,770	53 km
2008	SHU LIGHTNING COMPLEX (MOON)	36,514	67 km
2014	EILER	30,967	32 km
2017	COVE	30,884	95 km
2008	SHU LIGHTNING COMPLEX (MOTION)	29,346	49 km
2012	PONDEROSA	28,690	44 km
2012	READING	26,872	51 km
1999	JONES	26,818	29 km
2021	LAVA	26,287	83 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	34°F (1°C)	8.7 in	Coldest, Wettest
February	42°F (6°C)	7.3 in
March	44°F (7°C)	7.4 in
April	49°F (10°C)	4.1 in
May	57°F (14°C)	2.2 in
June	64°F (18°C)	1.0 in
July	69°F (20°C)	0.2 in	Driest
August	70°F (21°C)	0.7 in	Warmest
September	65°F (18°C)	1.5 in
October	56°F (13°C)	3.6 in
November	45°F (7°C)	8.0 in
December	40°F (4°C)	8.5 in

Round Mountain has a seasonal temperature swing of 36°F / from 34°F in January to 70°F in August. Total annual precipitation is 53.1 inches, with January being the wettest month (8.7") and July the driest (0.2").

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