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Weather & Climate in Courtland, CA

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

Courtland enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 48°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 24.8 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 10 feet.

Temperature

48°F Jan (9°C) 77°F Jul (25°C)
Annual Average62.1°F
15% above US avg
January Average48°F (9°C)
July Average77°F (25°C)
Sunny Days326 days/yr

Geography

Elevation10 ft (3 m)
Area1.8 sq mi (4.7 km²)
Population Density293/sq mi
Coordinates38.3329°N, 121.5570°W
TimezoneAmerica/Los_Angeles
CountySacramento County County
Nearest AirportSacramento International (SMF)
25 miles away

Precipitation & Snow

Annual Rainfall 24.8"
35% below US avg
Wettest Month (Jan) 3.62"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score98.1 / 100
Social Vulnerability37.4 / 100
Community Resilience57.0 / 100

Hazard Breakdown

Tornado Relatively Moderate
Earthquake Relatively High
Wildfire Relatively Moderate
Flood Relatively High
Hail Relatively Low
Strong Wind Very Low
Heat Wave Relatively Moderate
Winter Weather Very Low
Lightning Relatively Moderate
Drought Relatively High
Cold Wave No Rating
Landslide Relatively Low
Coastal Flood No Rating
Volcano Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

4,085 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 67 km 11 km
Jan 16, 1993 9 km E of Gilroy, California M4.9 146 km 7 km
Sep 3, 2000 5 km WSW of Yountville, California M4.9 75 km 9 km
Sep 4, 1995 13 km SW of Middletown, California M4.8 110 km 7 km
May 12, 2006 7 km W of Cobb, California M4.7 122 km 4 km
May 21, 1996 8 km ESE of East Foothills, California M4.7 109 km 8 km
Aug 11, 1993 14 km ESE of Alum Rock, California M4.7 114 km 9 km
Jan 2, 2025 4 km NW of Cobb, CA M4.7 119 km 1 km
Aug 18, 1999 0 km S of Bolinas, California M4.6 110 km 8 km
Jan 11, 2000 6 km N of Geyserville, California M4.6 128 km 6 km
Feb 18, 2004 4 km WNW of Cobb, California M4.6 119 km 3 km
Sep 19, 2023 15 km SW of Westley, CA M4.5 102 km 4 km
Jan 12, 2014 8 km W of Cobb, California M4.5 122 km 2 km
Aug 3, 2006 5 km W of Glen Ellen, California M4.5 90 km 9 km
Jun 8, 2024 7 km NW of The Geysers, CA M4.5 122 km 4 km
Sep 19, 1992 7 km NW of Cobb, California M4.5 122 km 3 km
Apr 24, 2007 7 km WSW of Cobb, California M4.5 119 km 2 km
Jun 3, 2023 2km NW of The Geysers, CA M4.5 118 km 4 km
Mar 14, 2013 5 km W of Cobb, California M4.4 119 km 1 km
Apr 12, 2023 7km WNW of Cobb, CA M4.4 122 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

76 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 2 injuries.

Date Rating Distance Path Fatalities
Feb 7, 1978 EF2 42 km 1.9 mi 0
Apr 27, 1953 EF2 90 km 0.1 mi 0
Jan 10, 2023 EF1 75 km 0.4 mi 0
Dec 24, 2015 EF1 56 km 6.2 mi 0
Oct 22, 2012 EF1 89 km 4.0 mi 0
Oct 22, 2012 EF1 81 km 2.0 mi 0
Oct 22, 2012 EF1 83 km 0.3 mi 0
Jan 23, 2010 EF1 50 km 1.6 mi 0
Apr 14, 2006 EF1 90 km 0.5 mi 0
Dec 12, 1996 EF1 88 km 0.6 mi 0
Apr 19, 1988 EF1 51 km 1.0 mi 0
Apr 19, 1988 EF1 40 km 0.2 mi 0
Mar 22, 1983 EF1 47 km 2.0 mi 0
Jan 14, 1980 EF1 99 km 0.3 mi 0
Mar 1, 1978 EF1 92 km 1.5 mi 0
May 31, 1967 EF1 46 km 0.1 mi 0
Jan 14, 2023 EF0 36 km 0.3 mi 0
Nov 8, 2022 EF0 21 km 0.8 mi 0
Nov 18, 2020 EF0 59 km 4.4 mi 0
May 18, 2020 EF0 46 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

5 tsunamis 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 85 km
1989 N. CALIFORNIA Earthquake 1.0 m 62 147 km
1856 N. CALIFORNIA Eruption + Earthquake 0.6 m — 113 km
1906 N. CALIFORNIA Eruption + Earthquake 0.1 m — 109 km
1865 N. CALIFORNIA Eruption + Earthquake — — 130 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Clear Lake (127 km).

Name Type Elevation Last Eruption Distance
Clear Lake Volcanic field 1,439 m (4,721 ft) Unknown 127 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SCU LIGHTNING COMPLEX (405,787 acres, 2020).

Year Name Acres Burned Distance
2020 SCU LIGHTNING COMPLEX 405,787 94 km
2020 HENNESSEY 314,241 71 km
2018 COUNTY 92,450 65 km
2015 BUTTE 72,894 85 km
2020 GLASS 68,020 90 km
2017 NUNS 56,883 83 km
2017 ATLAS 51,664 59 km
2004 RUMSEY 39,335 78 km
1999 SIXTEEN 37,162 85 km
1988 MILLER 35,750 48 km
2012 SIXTEEN COMPLEX 18,191 99 km
1992 GULCH 18,019 96 km
2024 CORRAL 16,138 78 km
2006 ZAM ASSIST 14,404 56 km
2018 WAVERLY 12,238 72 km
2009 CORRAL 12,006 83 km
1996 SCOTT 8,828 51 km
2015 WRAGG 8,455 48 km
2003 BIRD 7,727 89 km
2014 MONTICELLO 6,984 50 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 48°F (9°C) 3.6 in Wettest
February 51°F (10°C) 3.1 in
March 55°F (13°C) 2.5 in
April 59°F (15°C) 0.9 in
May 65°F (18°C) 0.4 in
June 70°F (21°C) 0.1 in
July 77°F (25°C) 0.0 in Warmest, Driest
August 71°F (22°C) 0.1 in
September 69°F (21°C) 0.3 in
October 63°F (17°C) 0.9 in
November 53°F (12°C) 2.3 in
December 45°F (7°C) 2.4 in Coldest

Courtland has a seasonal temperature swing of 32°F / from 45°F in December to 77°F in July. Total annual precipitation is 16.6 inches, with January being the wettest month (3.6") and July the driest (0.0").

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