Weather & Climate in East Nicolaus, CA

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

East Nicolaus enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 76°F in July. The area gets 330 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 18.0 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 42 feet.

Temperature

47°F Jan (8°C) 76°F Jul (25°C)

Annual Average	61.2°F
	13% above US avg
January Average	47°F (8°C)
July Average	76°F (25°C)
Sunny Days	330 days/yr

Geography

Elevation	42 ft (13 m)
Area	4.6 sq mi (11.9 km²)
Population Density	30/sq mi
Coordinates	38.9100°N, 121.5443°W
Timezone	America/Los_Angeles
County	Yolo County County
Nearest Airport	Sacramento International (SMF) 15 miles away

Precipitation & Snow

Annual Rainfall 18.0"

53% below US avg

Wettest Month (Jan) 3.74"

Driest Month (Jul) 0.08"

Air Quality

AQI Median	48.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	91.4 / 100
Social Vulnerability	24.2 / 100
Community Resilience	69.4 / 100

Hazard Breakdown

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

4,549 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	102 km	11 km
May 24, 2013	2 km NNE of Canyondam, California	M5.7	149 km	8 km
May 11, 2023	Lake Almanor Earthquake	M5.5	149 km	6 km
Aug 10, 2001	3 km N of Blairsden, California	M5.2	128 km	5 km
May 12, 2023	4km NW of Canyondam, CA	M5.2	148 km	6 km
Aug 10, 2016	20 km NNE of Upper Lake, California	M5.1	118 km	14 km
Sep 3, 2000	5 km WSW of Yountville, California	M4.9	96 km	9 km
May 24, 2013	1km NNW of Canyondam, CA	M4.9	147 km	4 km
Oct 30, 1998	4 km N of Tahoe Vista, California	M4.8	136 km	1 km
Sep 4, 1995	13 km SW of Middletown, California	M4.8	107 km	7 km
Apr 18, 2007	15 km N of Potter Valley, California	M4.8	148 km	5 km
Jun 26, 2005	8 km NNW of Tahoe Vista, California	M4.8	133 km	-2 km
May 12, 2006	7 km W of Cobb, California	M4.7	110 km	4 km
May 7, 2021	19km NW of Truckee, CA	M4.7	122 km	10 km
Jan 2, 2025	4 km NW of Cobb, CA	M4.7	105 km	1 km
Aug 18, 1999	0 km S of Bolinas, California	M4.6	149 km	8 km
Jan 11, 2000	6 km N of Geyserville, California	M4.6	120 km	6 km
Feb 18, 2004	4 km WNW of Cobb, California	M4.6	106 km	3 km
Jan 12, 2014	8 km W of Cobb, California	M4.5	111 km	2 km
Sep 25, 2012	3 km N of Talmage, California	M4.5	143 km	11 km

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

Tornado History

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

Date	Rating	Distance	Path	Fatalities
May 25, 2011	EF2	77 km	0.2 mi	0
Feb 10, 1994	EF2	68 km	0.3 mi	0
Feb 7, 1978	EF2	25 km	1.9 mi	0
Dec 24, 2015	EF1	44 km	6.2 mi	0
Mar 26, 2014	EF1	88 km	1.0 mi	0
Mar 26, 2014	EF1	89 km	0.7 mi	0
Mar 26, 2014	EF1	91 km	0.6 mi	0
Oct 22, 2012	EF1	42 km	4.0 mi	0
Oct 22, 2012	EF1	19 km	0.3 mi	0
Oct 22, 2012	EF1	19 km	2.0 mi	0
May 25, 2011	EF1	95 km	21.7 mi	0
May 25, 2011	EF1	88 km	26.4 mi	0
Jan 8, 2005	EF1	60 km	0.1 mi	0
Apr 17, 1993	EF1	85 km	0.5 mi	0
Jan 7, 1993	EF1	59 km	0.1 mi	0
Dec 17, 1992	EF1	48 km	5.0 mi	0
Dec 17, 1992	EF1	68 km	1.0 mi	0
Apr 19, 1988	EF1	89 km	0.2 mi	0
Apr 19, 1988	EF1	41 km	1.0 mi	0
Mar 22, 1983	EF1	27 km	2.0 mi	0

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

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 4.5 m (15 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1868	N. CALIFORNIA	Eruption + Earthquake	4.5 m	30	143 km

Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Clear Lake (106 km).

Name	Type	Elevation	Last Eruption	Distance
Clear Lake	Volcanic field	1,439 m (4,721 ft)	Unknown	106 km
Lassen Volcanic Center	Stratovolcano	3,187 m (10,456 ft)	1917	176 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	98 km
2020	HENNESSEY	314,241	72 km
2018	CAMP	153,687	93 km
2014	KING	99,070	87 km
2015	ROCKY	96,125	78 km
2018	COUNTY	92,450	59 km
2022	MOSQUITO	77,858	75 km
2015	VALLEY	77,507	94 km
2020	GLASS	68,020	96 km
2017	ATLAS	51,664	86 km
2004	RUMSEY	39,335	66 km
1999	SIXTEEN	37,162	69 km
1988	49R	36,673	47 km
1988	MILLER	35,750	72 km
2013	AMERICAN	27,938	86 km
2008	CANYON COMPLEX (SCOTCH)	26,418	95 km
2008	HUMBOLDT	23,769	89 km
1992	CLEVELAND	21,835	97 km
2008	AMERICAN RIVER COMPLEX (GOVERNMENT)	20,709	88 km
2012	SIXTEEN COMPLEX	18,191	67 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	47°F (8°C)	3.7 in	Wettest
February	51°F (11°C)	3.0 in
March	55°F (13°C)	2.8 in
April	60°F (16°C)	1.3 in
May	68°F (20°C)	0.4 in
June	74°F (23°C)	0.2 in
July	76°F (25°C)	0.1 in	Warmest, Driest
August	75°F (24°C)	0.1 in
September	72°F (22°C)	0.4 in
October	64°F (18°C)	1.3 in
November	53°F (12°C)	3.1 in
December	46°F (8°C)	2.9 in	Coldest

East Nicolaus has a seasonal temperature swing of 30°F / from 46°F in December to 76°F in July. Total annual precipitation is 19.3 inches, with January being the wettest month (3.7") and July the driest (0.1").

View full profile of East Nicolaus, CA →