Weather & Climate in Stonyford, CA

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

Stonyford enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 44°F in January while summers reach 77°F in July. The area gets 326 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 21.8 inches (drier than the 38-inch national average). The area receives 1.4 inches of snow annually. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 1,192 feet.

Temperature

44°F Jan (7°C) 77°F Jul (25°C)

Annual Average	59.3°F
	10% above US avg
January Average	44°F (7°C)
July Average	77°F (25°C)
Sunny Days	326 days/yr

Geography

Elevation	1,192 ft (363 m)
Area	2.9 sq mi (7.5 km²)
Population Density	70/sq mi
Coordinates	39.3695°N, 122.5438°W
Timezone	America/Los_Angeles
County	Glenn County County
Nearest Airport	Chico Regional (CIC) 45 miles away

Precipitation & Snow

Annual Rainfall 21.8"

43% below US avg

Snowfall 1.4"

Wettest Month (Jan) 5.63"

Driest Month (Jul) 0.08"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	74.4 / 100
Social Vulnerability	14.8 / 100
Community Resilience	15.1 / 100

Hazard Breakdown

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

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

Earthquake History

3,937 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.

Aug 24, 2014	The 2014 South Napa, California Earthquake	M6.0	130 km	11 km
Nov 26, 1998	7km NW of Redding, CA	M5.1	140 km	25 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	23 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	111 km	9 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	78 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	50 km	5 km
May 12, 2006	7 km W of Cobb, California	M4.7	66 km	4 km
Jan 19, 2008	31 km NW of Rancho Tehama Reserve, California	M4.7	91 km	2 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	61 km	1 km
Nov 26, 1998	5km NNW of Redding, CA	M4.6	139 km	25 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	74 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	62 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	66 km	2 km
Sep 25, 2012	3 km N of Talmage, California	M4.5	58 km	11 km
Jan 19, 2008	34 km WNW of Rancho Tehama Reserve, California	M4.5	91 km	10 km
Jul 21, 1998	4 km NNW of Redding, California	M4.5	140 km	23 km
Aug 3, 2006	5 km W of Glen Ellen, California	M4.5	112 km	9 km
Aug 28, 2016	8 km ESE of Mad River, California	M4.5	140 km	36 km
Jun 8, 2024	7 km NW of The Geysers, CA	M4.5	66 km	4 km
Sep 19, 1992	7 km NW of Cobb, California	M4.5	61 km	3 km

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

Tornado History

57 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	85 km	0.3 mi	0
Sep 24, 1986	EF2	75 km	2.0 mi	0
May 9, 1980	EF2	89 km	0.1 mi	0
May 19, 1953	EF2	53 km	2.0 mi	0
Dec 19, 2023	EF1	78 km	0.4 mi	0
Mar 26, 2014	EF1	42 km	0.6 mi	0
Mar 26, 2014	EF1	46 km	0.7 mi	0
Mar 26, 2014	EF1	44 km	1.0 mi	0
Oct 22, 2012	EF1	86 km	2.0 mi	0
Oct 22, 2012	EF1	93 km	0.3 mi	0
May 25, 2011	EF1	34 km	26.4 mi	0
May 25, 2011	EF1	43 km	21.7 mi	0
Jan 27, 2005	EF1	97 km	0.5 mi	0
Jan 8, 2005	EF1	84 km	0.1 mi	0
Feb 22, 1996	EF1	93 km	1.0 mi	0
Apr 17, 1993	EF1	40 km	0.5 mi	0
Jan 7, 1993	EF1	71 km	0.1 mi	0
Dec 17, 1992	EF1	85 km	1.0 mi	0
Dec 2, 1992	EF1	94 km	3.0 mi	0

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

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Clear Lake (49 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	49 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	153 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	76 km
2018	RANCH	427,048	23 km
2020	HENNESSEY	314,241	86 km
2018	CAMP	153,687	94 km
1990	CAMPBELL	128,266	97 km
2015	ROCKY	96,125	52 km
2008	YOLLA BOLLY COMPLEX (IRON)	94,888	89 km
2018	COUNTY	92,450	83 km
1996	FORK	83,209	25 km
2019	KINCADE	77,780	80 km
2015	VALLEY	77,507	65 km
2020	GLASS	68,020	91 km
2020	WALLBRIDGE	55,194	93 km
1987	MENDENHALL	54,162	47 km
2018	RIVER	48,920	54 km
2012	NORTH PASS	43,689	73 km
2004	RUMSEY	39,335	72 km
1999	SIXTEEN	37,162	66 km
2017	TUBBS	36,981	90 km
2017	REDWOOD VALLEY INCIDENT	36,545	58 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	44°F (7°C)	5.6 in	Wettest
February	46°F (8°C)	4.3 in
March	49°F (9°C)	3.7 in
April	53°F (12°C)	1.7 in
May	61°F (16°C)	0.5 in
June	69°F (20°C)	0.3 in
July	77°F (25°C)	0.1 in	Warmest, Driest
August	74°F (23°C)	0.2 in
September	69°F (21°C)	0.6 in
October	60°F (16°C)	1.7 in
November	49°F (10°C)	4.5 in
December	44°F (6°C)	4.8 in	Coldest

Stonyford has a seasonal temperature swing of 33°F / from 44°F in December to 77°F in July. Total annual precipitation is 27.9 inches, with January being the wettest month (5.6") and July the driest (0.1").

View full profile of Stonyford, CA →