Weather & Climate in Rancho Tehama Reserve, CA

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

Rancho Tehama Reserve enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 47°F in January while summers reach 82°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 23.1 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 748 feet.

Temperature

47°F Jan (9°C) 82°F Jul (28°C)

Annual Average	63.3°F
	17% above US avg
January Average	47°F (9°C)
July Average	82°F (28°C)
Sunny Days	308 days/yr

Geography

Elevation	748 ft (228 m)
Area	11.7 sq mi (30.4 km²)
Population Density	94/sq mi
Coordinates	40.0040°N, 122.4283°W
Timezone	America/Los_Angeles
County	Tehama County County
Nearest Airport	Chico Regional (CIC) 31 miles away

Precipitation & Snow

Annual Rainfall 23.1"

39% below US avg

Wettest Month (Jan) 4.69"

Driest Month (Jul) 0.08"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	88.9 / 100
Social Vulnerability	52.9 / 100
Community Resilience	27.3 / 100

Hazard Breakdown

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

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

Earthquake History

4,435 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	118 km	8 km
May 11, 2023	Lake Almanor Earthquake	M5.5	114 km	6 km
Apr 30, 2008	3 km NNW of Burnt Ranch, California	M5.4	129 km	28 km
Jan 1, 2023	15km SE of Rio Dell, CA	M5.4	139 km	31 km
May 12, 2023	4km NW of Canyondam, CA	M5.2	115 km	6 km
Nov 26, 1998	7km NW of Redding, CA	M5.1	69 km	25 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	82 km	14 km
Sep 8, 2023	12 km NE of Burney, CA	M5.0	129 km	16 km
May 24, 2013	1km NNW of Canyondam, CA	M4.9	117 km	4 km
Jul 21, 2016	19km SSE of Blue Lake, CA	M4.8	148 km	26 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	149 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	84 km	5 km
May 12, 2006	7 km W of Cobb, California	M4.7	136 km	4 km
Jan 19, 2008	31 km NW of Rancho Tehama Reserve, California	M4.7	30 km	2 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	132 km	1 km
Nov 26, 1998	5km NNW of Redding, CA	M4.6	68 km	25 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	144 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	133 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	137 km	2 km
Sep 25, 2012	3 km N of Talmage, California	M4.5	112 km	11 km

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

Tornado History

43 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 7 injuries.

Date	Rating	Distance	Path	Fatalities
May 25, 2011	EF2	82 km	0.2 mi	0
Feb 10, 1994	EF2	91 km	0.3 mi	0
Sep 24, 1986	EF2	33 km	2.0 mi	0
May 9, 1980	EF2	23 km	0.1 mi	0
May 19, 1953	EF2	35 km	2.0 mi	0
Dec 19, 2023	EF1	55 km	0.4 mi	0
Mar 26, 2014	EF1	56 km	1.0 mi	0
Mar 26, 2014	EF1	53 km	0.6 mi	0
Mar 26, 2014	EF1	54 km	0.7 mi	0
May 25, 2011	EF1	57 km	26.4 mi	0
May 25, 2011	EF1	48 km	21.7 mi	0
Jan 8, 2005	EF1	96 km	0.1 mi	0
Apr 17, 1993	EF1	59 km	0.5 mi	0
Jan 7, 1993	EF1	89 km	0.1 mi	0
Dec 17, 1992	EF1	91 km	1.0 mi	0
Mar 23, 1978	EF1	74 km	0.1 mi	0
Mar 5, 1978	EF1	7 km	0.1 mi	0
Mar 4, 1978	EF1	48 km	1.5 mi	0
Jun 28, 1970	EF1	90 km	2.3 mi	0
Apr 25, 2021	EF0	32 km	2.0 mi	0

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

Nearby Volcanoes

4 volcanoes within 200 km. Closest: Lassen Volcanic Center (95 km).

Name	Type	Elevation	Last Eruption	Distance
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	95 km
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	119 km
Shasta	Stratovolcano	4,317 m (14,163 ft)	1250	158 km
Medicine Lake	Shield	2,412 m (7,913 ft)	1060	193 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: AUGUST COMPLEX (1,068,802 acres, 2020).

Year	Name	Acres Burned	Distance
2020	AUGUST COMPLEX	1,068,802	52 km
2018	RANCH	427,048	87 km
2018	CARR	233,710	80 km
2018	CAMP	153,687	79 km
1990	CAMPBELL	128,266	52 km
2021	MCFARLAND	121,554	52 km
2008	YOLLA BOLLY COMPLEX (IRON)	94,888	48 km
1996	FORK	83,209	93 km
1999	GUN 2	61,203	57 km
2020	ZOGG	56,941	49 km
1987	MENDENHALL	54,162	73 km
2008	BTU LIGHTNING COMPLEX (LONG BRANCH-JACK)	52,091	86 km
2000	STORRIE	49,588	97 km
1994	BARKLEY	44,256	59 km
2012	NORTH PASS	43,689	54 km
2017	REDWOOD VALLEY INCIDENT	36,545	100 km
2008	SHU LIGHTNING COMPLEX (MOON)	36,514	64 km
1999	MHRD COMPLEX (BUCKS)	34,459	96 km
2012	MILL	29,924	78 km
2008	SHU LIGHTNING COMPLEX (MOTION)	29,346	78 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	47°F (9°C)	4.7 in	Wettest
February	50°F (10°C)	3.9 in
March	53°F (12°C)	3.5 in
April	58°F (14°C)	1.6 in
May	67°F (19°C)	0.8 in
June	75°F (24°C)	0.4 in
July	82°F (28°C)	0.1 in	Warmest, Driest
August	80°F (26°C)	0.2 in
September	75°F (24°C)	0.7 in
October	65°F (18°C)	1.5 in
November	52°F (11°C)	3.8 in
December	46°F (8°C)	3.9 in	Coldest

Rancho Tehama Reserve has a seasonal temperature swing of 36°F / from 46°F in December to 82°F in July. Total annual precipitation is 25.1 inches, with January being the wettest month (4.7") and July the driest (0.1").

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