Weather & Climate in Greenville, CA

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

Greenville experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 33°F in January while summers reach 71°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 13.0 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 3,679 feet.

Temperature

33°F Jan (0°C) 71°F Jul (21°C)

Annual Average	50.2°F
	7% below US avg
January Average	33°F (0°C)
July Average	71°F (21°C)
Sunny Days	316 days/yr

Geography

Elevation	3,679 ft (1,121 m)
Area	8.0 sq mi (20.7 km²)
Population Density	48/sq mi
Coordinates	40.1336°N, 120.9453°W
Timezone	America/Los_Angeles
County	Lassen County County
Nearest Airport	Chico Regional (CIC) 56 miles away

Precipitation & Snow

Annual Rainfall 13.0"

66% below US avg

Wettest Month (Jan) 6.22"

Driest Month (Jul) 0.24"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	73.1 / 100
Social Vulnerability	69.3 / 100
Community Resilience	56.6 / 100

Hazard Breakdown

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

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

Earthquake History

1,783 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	12 km	8 km
May 11, 2023	Lake Almanor Earthquake	M5.5	16 km	6 km
Aug 10, 2001	3 km N of Blairsden, California	M5.2	46 km	5 km
May 12, 2023	4km NW of Canyondam, CA	M5.2	15 km	6 km
Apr 26, 2008	1 km NW of Mogul, Nevada	M5.1	110 km	3 km
Nov 26, 1998	7km NW of Redding, CA	M5.1	136 km	25 km
Sep 8, 2023	12 km NE of Burney, CA	M5.0	105 km	16 km
May 24, 2013	1km NNW of Canyondam, CA	M4.9	12 km	4 km
Apr 26, 2008	0 km N of Mogul, Nevada	M4.8	110 km	3 km
Oct 30, 1998	4 km N of Tahoe Vista, California	M4.8	122 km	1 km
Feb 10, 1993	28 km SW of Empire, Nevada	M4.8	118 km	5 km
Jun 26, 2005	8 km NNW of Tahoe Vista, California	M4.8	118 km	-2 km
Jan 19, 2008	31 km NW of Rancho Tehama Reserve, California	M4.7	150 km	2 km
May 7, 2021	19km NW of Truckee, CA	M4.7	92 km	10 km
Nov 26, 1998	5km NNW of Redding, CA	M4.6	134 km	25 km
Nov 15, 1995	9 km SW of Cold Springs, Nevada	M4.5	95 km	-1 km
Jul 21, 1998	4 km NNW of Redding, California	M4.5	136 km	23 km
Aug 4, 2016	5 km WNW of Patton Village, California	M4.5	62 km	7 km
May 10, 2005	10 km NW of Burney, California	M4.4	114 km	17 km
Apr 5, 2024	6 km NW of Belden, CA	M4.4	32 km	8 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 25, 2011	EF2	83 km	0.2 mi	0
Feb 10, 1994	EF2	87 km	0.3 mi	0
Sep 24, 1986	EF2	97 km	2.0 mi	0
Dec 19, 2023	EF1	84 km	0.4 mi	0
Aug 15, 2020	EF1	83 km	0.1 mi	0
Aug 14, 2020	EF1	83 km	0.4 mi	0
Jan 8, 2005	EF1	93 km	0.1 mi	0
Dec 17, 1992	EF1	87 km	1.0 mi	0
Dec 17, 1992	EF1	98 km	5.0 mi	0
Mar 23, 1978	EF1	70 km	0.1 mi	0
Mar 4, 1978	EF1	90 km	1.5 mi	0
Jan 4, 2021	EF0	93 km	2.7 mi	0
Nov 18, 2020	EF0	75 km	0.5 mi	0
Jul 20, 2015	EF0	82 km	3.2 mi	0
Mar 29, 2014	EF0	93 km	0.0 mi	0
Mar 25, 2014	EF0	78 km	0.3 mi	0
Apr 8, 2005	EF0	93 km	0.1 mi	0
May 16, 1998	EF0	98 km	0.1 mi	0
Mar 10, 1994	EF0	87 km	0.2 mi	0
Apr 17, 1993	EF0	88 km	0.1 mi	0

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

Nearby Volcanoes

4 volcanoes within 200 km. Closest: Lassen Volcanic Center (62 km).

Name	Type	Elevation	Last Eruption	Distance
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	62 km
Medicine Lake	Shield	2,412 m (7,913 ft)	1060	172 km
Shasta	Stratovolcano	4,317 m (14,163 ft)	1250	177 km
Soda Lakes	Maar(s)	1,251 m (4,104 ft)	Unknown	190 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: DIXIE (979,795 acres, 2021).

Year	Name	Acres Burned	Distance
2021	DIXIE	979,795	22 km
2020	NORTH COMPLEX	316,556	48 km
2012	RUSH	306,811	89 km
2018	CAMP	153,687	68 km
1990	CAMPBELL	128,266	76 km
2021	SUGAR	108,368	68 km
2017	LONG VALLEY	80,456	89 km
2012	CHIPS	79,978	22 km
2001	OBSERVATION	67,432	93 km
2007	MOONLIGHT	65,718	20 km
1999	GUN 2	61,203	73 km
2019	WALKER	58,747	31 km
2008	BTU LIGHTNING COMPLEX (LONG BRANCH-JACK)	52,091	53 km
2000	STORRIE	49,588	31 km
1994	COTTONWOOD	47,912	87 km
1999	FISH COMPLEX (FISH SPRINGS)	47,030	95 km
2020	LOYALTON	45,484	85 km
1994	BARKLEY	44,256	69 km
2014	BALD	39,770	88 km
1987	CLARK	39,194	55 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	33°F (0°C)	6.2 in	Coldest, Wettest
February	36°F (2°C)	5.2 in
March	40°F (4°C)	4.8 in
April	45°F (7°C)	2.2 in
May	52°F (11°C)	1.3 in
June	60°F (15°C)	0.8 in
July	71°F (21°C)	0.2 in	Warmest, Driest
August	65°F (18°C)	0.4 in
September	59°F (15°C)	0.9 in
October	50°F (10°C)	2.3 in
November	40°F (4°C)	4.8 in
December	34°F (1°C)	5.2 in

Greenville has a seasonal temperature swing of 38°F / from 33°F in January to 71°F in July. Total annual precipitation is 34.4 inches, with January being the wettest month (6.2") and July the driest (0.2").

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