Weather & Climate in Tennant, CA

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

Tennant experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 33°F in January while summers reach 69°F in July. The area gets 316 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 14.2 inches (drier than the 38-inch national average). The area receives 43.2 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 4,812 feet.

Temperature

33°F Jan (0°C) 69°F Jul (21°C)

Annual Average	48.7°F
	10% below US avg
January Average	33°F (0°C)
July Average	69°F (21°C)
Sunny Days	316 days/yr

Geography

Elevation	4,812 ft (1,467 m)
Area	0.2 sq mi (0.6 km²)
Population Density	203/sq mi
Coordinates	41.5789°N, 121.9175°W
Timezone	America/Los_Angeles
County	Siskiyou County County
Nearest Airport	Crater Lake/Klamath Regional (LMT) 41 miles away

Precipitation & Snow

Annual Rainfall 14.2"

63% below US avg

Snowfall 43.2"

Wettest Month (Dec) 3.54"

Driest Month (Jul) 0.43"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	89.0 / 100
Social Vulnerability	79.4 / 100
Community Resilience	44.8 / 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 Low
Winter Weather	Relatively Moderate
Lightning	Relatively Low
Drought	Relatively High
Cold Wave	Very Low
Landslide	Relatively Moderate
Volcano	Relatively High
Avalanche	Relatively Moderate

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

Earthquake History

813 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.

Sep 21, 1993	27 km WNW of Klamath Falls, Oregon	M6.0	87 km	9 km
Sep 21, 1993	22 km WNW of Klamath Falls, Oregon	M5.9	83 km	9 km
Nov 26, 1998	7km NW of Redding, CA	M5.1	114 km	25 km
Dec 4, 1993	20 km WNW of Klamath Falls, Oregon	M5.1	80 km	5 km
Sep 8, 2023	12 km NE of Burney, CA	M5.0	76 km	16 km
Nov 26, 1998	5km NNW of Redding, CA	M4.6	114 km	25 km
Jul 21, 1998	4 km NNW of Redding, California	M4.5	114 km	23 km
May 10, 2005	10 km NW of Burney, California	M4.4	72 km	17 km
Mar 27, 1997	14km SW of Manton, CA	M4.4	139 km	8 km
Dec 20, 2000	12 km NNW of Burney, California	M4.4	68 km	17 km
Jun 14, 1991	8 km SW of Hat Creek, California	M4.4	92 km	11 km
Jun 30, 2004	10 km NNE of New Pine Creek, Oregon	M4.4	150 km	9 km
Sep 8, 2023	12 km NE of Burney, CA	M4.3	75 km	12 km
Jan 9, 1994	12 km WNW of Klamath Falls, Oregon	M4.3	76 km	1 km
Sep 21, 1993	25 km SW of Chiloquin, Oregon	M4.3	91 km	-2 km
Jan 19, 1994	15 km WNW of Klamath Falls, Oregon	M4.3	79 km	-1 km
May 15, 2002	9 km W of Klamath Falls, Oregon	M4.3	73 km	6 km
Dec 20, 2000	11 km NNW of Burney, California	M4.3	68 km	18 km
Nov 28, 1998	3 km NNW of Redding, California	M4.2	114 km	23 km
Aug 29, 1997	Northern California	M4.2	110 km	44 km

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

Tornado History

5 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date	Rating	Distance	Path	Fatalities
May 19, 1962	EF1	62 km	0.5 mi	0
May 22, 1958	EF1	53 km	2.7 mi	0
Apr 17, 2007	EF0	61 km	1.0 mi	0
Apr 17, 2004	EF0	65 km	0.2 mi	0
May 30, 1995	EF0	73 km	0.1 mi	0

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

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Shasta (30 km).

Name	Type	Elevation	Last Eruption	Distance
Shasta	Stratovolcano	4,317 m (14,163 ft)	1250	30 km
Medicine Lake	Shield	2,412 m (7,913 ft)	1060	30 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	126 km
Crater Lake	Caldera	2,487 m (8,159 ft)	-2850	151 km
Cinnamon Butte	Pyroclastic cone(s)	1,956 m (6,417 ft)	Unknown	186 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: ANTELOPE (141,960 acres, 2021).

Year	Name	Acres Burned	Distance
2021	ANTELOPE	141,960	14 km
2020	CALDWELL	81,870	42 km
2018	DELTA	63,732	78 km
1992	FOUNTAIN	62,340	82 km
2022	MCKINNEY	60,592	80 km
2017	STEELE	49,153	91 km
2012	BAGLEY	47,731	62 km
2018	HIRZ	46,700	73 km
2014	BALD	39,770	94 km
2018	STONE	39,455	77 km
2018	KLAMATHON	38,188	65 km
2014	BEAVER COMPLEX	35,204	57 km
2014	WHITES	34,506	98 km
2014	KNF BEAVER	34,274	86 km
2016	GAP	33,940	98 km
2014	EILER	30,967	92 km
2017	COVE	30,884	83 km
2021	LAVA	26,287	31 km
1999	PINE	24,124	78 km
1996	AMBROSE COMPLEX (DAMON-LONG)	24,090	56 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	33°F (0°C)	3.2 in
February	32°F (-0°C)	2.8 in
March	35°F (2°C)	2.8 in
April	40°F (4°C)	1.7 in
May	47°F (8°C)	1.6 in
June	54°F (12°C)	1.2 in
July	69°F (21°C)	0.4 in	Warmest, Driest
August	62°F (17°C)	0.7 in
September	56°F (13°C)	0.9 in
October	47°F (8°C)	2.0 in
November	36°F (2°C)	3.5 in
December	30°F (-1°C)	3.5 in	Coldest, Wettest

Tennant has a seasonal temperature swing of 39°F / from 30°F in December to 69°F in July. Total annual precipitation is 24.3 inches, with December being the wettest month (3.5") and July the driest (0.4").

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