Weather & Climate in Loma Rica, CA

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

Loma Rica enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 45°F in January while summers reach 75°F in July. The area gets 293 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 46.3 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 495 feet.

Temperature

45°F Jan (7°C) 75°F Jul (24°C)

Annual Average	58.7°F
	9% above US avg
January Average	45°F (7°C)
July Average	75°F (24°C)
Sunny Days	293 days/yr

Geography

Elevation	495 ft (151 m)
Area	18.5 sq mi (47.9 km²)
Population Density	128/sq mi
Coordinates	39.3203°N, 121.4038°W
Timezone	America/Los_Angeles
County	Yuba County County
Nearest Airport	Chico Regional (CIC) 42 miles away

Precipitation & Snow

Annual Rainfall 46.3"

22% above US avg

Wettest Month (Jan) 5.55"

Driest Month (Jul) 0.04"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	80.9 / 100
Social Vulnerability	30.4 / 100
Community Resilience	36.6 / 100

Hazard Breakdown

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

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

Earthquake History

4,458 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	146 km	11 km
May 24, 2013	2 km NNE of Canyondam, California	M5.7	101 km	8 km
May 11, 2023	Lake Almanor Earthquake	M5.5	101 km	6 km
Aug 10, 2001	3 km N of Blairsden, California	M5.2	87 km	5 km
May 12, 2023	4km NW of Canyondam, CA	M5.2	101 km	6 km
Apr 26, 2008	1 km NW of Mogul, Nevada	M5.1	128 km	3 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	120 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	136 km	9 km
May 24, 2013	1km NNW of Canyondam, CA	M4.9	100 km	4 km
Oct 30, 1998	4 km N of Tahoe Vista, California	M4.8	117 km	1 km
Apr 26, 2008	0 km N of Mogul, Nevada	M4.8	129 km	3 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	136 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	147 km	5 km
Jun 26, 2005	8 km NNW of Tahoe Vista, California	M4.8	113 km	-2 km
May 12, 2006	7 km W of Cobb, California	M4.7	134 km	4 km
Jan 19, 2008	31 km NW of Rancho Tehama Reserve, California	M4.7	146 km	2 km
May 7, 2021	19km NW of Truckee, CA	M4.7	95 km	10 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	128 km	1 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	129 km	3 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 25, 2011	EF2	36 km	0.2 mi	0
Feb 10, 1994	EF2	26 km	0.3 mi	0
Sep 24, 1986	EF2	88 km	2.0 mi	0
Feb 7, 1978	EF2	69 km	1.9 mi	0
May 19, 1953	EF2	82 km	2.0 mi	0
Dec 19, 2023	EF1	65 km	0.4 mi	0
Dec 24, 2015	EF1	73 km	6.2 mi	0
Mar 26, 2014	EF1	66 km	1.0 mi	0
Mar 26, 2014	EF1	66 km	0.7 mi	0
Mar 26, 2014	EF1	70 km	0.6 mi	0
Oct 22, 2012	EF1	29 km	0.3 mi	0
Oct 22, 2012	EF1	35 km	2.0 mi	0
Oct 22, 2012	EF1	41 km	4.0 mi	0
May 25, 2011	EF1	72 km	26.4 mi	0
May 25, 2011	EF1	73 km	21.7 mi	0
Jan 8, 2005	EF1	20 km	0.1 mi	0
Apr 17, 1993	EF1	67 km	0.5 mi	0
Jan 7, 1993	EF1	29 km	0.1 mi	0
Dec 17, 1992	EF1	2 km	5.0 mi	0
Dec 17, 1992	EF1	26 km	1.0 mi	0

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

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Clear Lake (124 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	124 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	131 km

Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: NORTH COMPLEX (316,556 acres, 2020).

Year	Name	Acres Burned	Distance
2020	NORTH COMPLEX	316,556	51 km
2018	CAMP	153,687	50 km
1990	CAMPBELL	128,266	88 km
2014	KING	99,070	86 km
2018	COUNTY	92,450	96 km
2012	CHIPS	79,978	88 km
2022	MOSQUITO	77,858	69 km
2008	BTU LIGHTNING COMPLEX (LONG BRANCH-JACK)	52,091	59 km
2000	STORRIE	49,588	79 km
1994	BARKLEY	44,256	94 km
2004	RUMSEY	39,335	98 km
1999	SIXTEEN	37,162	98 km
1988	49R	36,673	19 km
1999	MHRD COMPLEX (BUCKS)	34,459	63 km
2013	AMERICAN	27,938	73 km
2008	CANYON COMPLEX (SCOTCH)	26,418	48 km
2008	HUMBOLDT	23,769	49 km
1992	CLEVELAND	21,835	100 km
2008	CUB COMPLEX (CUB)	20,772	97 km
2008	AMERICAN RIVER COMPLEX (GOVERNMENT)	20,709	71 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	45°F (7°C)	5.6 in	Coldest, Wettest
February	51°F (11°C)	4.6 in
March	55°F (13°C)	4.4 in
April	60°F (15°C)	2.0 in
May	67°F (20°C)	0.7 in
June	74°F (24°C)	0.3 in
July	75°F (24°C)	0.0 in	Driest
August	78°F (25°C)	0.1 in	Warmest
September	74°F (23°C)	0.5 in
October	65°F (18°C)	1.8 in
November	53°F (12°C)	4.5 in
December	47°F (8°C)	4.5 in

Loma Rica has a seasonal temperature swing of 32°F / from 45°F in January to 78°F in August. Total annual precipitation is 29.0 inches, with January being the wettest month (5.6") and July the driest (0.0").

View full profile of Loma Rica, CA →