Sign In Register

Weather & Climate in Lemon Grove, CA

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

Lemon Grove enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 57°F in January while summers reach 70°F in July / relatively mild seasonal variation. 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 9.2 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 413 feet.

Temperature

57°F Jan (14°C) 70°F Jul (21°C)
Annual Average63.3°F
17% above US avg
January Average57°F (14°C)
July Average70°F (21°C)
Sunny Days330 days/yr

Geography

Elevation413 ft (126 m)
Area3.9 sq mi (10.0 km²)
Population Density7,085/sq mi
Coordinates32.7331°N, 117.0344°W
TimezoneAmerica/Los_Angeles
CountySan Diego County County
Nearest AirportSan Diego International (SAN)
9 miles away

Precipitation & Snow

Annual Rainfall 9.2"
76% below US avg
Snowfall 0.0"
Wettest Month (Mar) 2.40"
Driest Month (Jul) 0.04"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskVery High
Risk Score99.7 / 100
Social Vulnerability24.8 / 100
Community Resilience8.3 / 100

Hazard Breakdown

Tornado Relatively Low
Hurricane Very Low
Earthquake Relatively High
Wildfire Very High
Flood Very High
Hail Relatively Moderate
Strong Wind Relatively Moderate
Heat Wave Relatively High
Winter Weather Relatively Low
Lightning Relatively Moderate
Drought Relatively Low
Cold Wave Very Low
Landslide Relatively High
Coastal Flood Relatively Moderate
Tsunami Relatively Low
Volcano Very Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

7,584 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.7.

Jun 15, 2010 8km ESE of Ocotillo, CA M5.7 105 km 9 km
Jul 7, 2010 20km NNW of Borrego Springs, CA M5.4 92 km 12 km
Aug 26, 2012 4km NNW of Brawley, CA M5.4 143 km 8 km
Aug 26, 2012 5km NNW of Brawley, CA M5.3 142 km 8 km
Mar 23, 1994 35km E of Maneadero, B.C., MX M5.3 136 km 5 km
Apr 4, 2010 15km SSW of Progreso, B.C., MX M5.3 135 km 10 km
Jun 5, 2021 11km W of Calipatria, CA M5.3 138 km 6 km
Apr 14, 2025 5 km S of Julian, CA M5.2 53 km 14 km
Jun 12, 2005 10km ESE of Anza, CA M5.2 99 km 13 km
Jun 10, 2016 20km NNW of Borrego Springs, CA M5.2 95 km 12 km
Oct 31, 2001 16km ESE of Anza, CA M5.0 99 km 14 km
Jun 15, 2004 67km SE of San Clemente Is. (SE tip), CA M5.0 93 km 10 km
Jul 24, 1992 13km NE of Thousand Palms, California M5.0 147 km 7 km
Apr 5, 2010 20km ESE of Ocotillo, CA M5.0 115 km 1 km
Aug 27, 2012 5km NNE of Brawley, CA M4.9 145 km 4 km
Apr 5, 2010 19km ESE of Ocotillo, CA M4.9 115 km 14 km
May 22, 2010 17km WNW of Progreso, B.C., MX M4.9 120 km 8 km
Jul 26, 1997 16km N of Borrego Springs, California M4.9 98 km 11 km
Aug 26, 2012 5km NW of Brawley, CA M4.9 141 km 4 km
Jun 16, 2005 4km NE of Yucaipa, CA M4.9 147 km 11 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

30 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1. Total: 4 injuries.

Date Rating Distance Path Fatalities
Feb 19, 2005 EF1 84 km 2.8 mi 0
Nov 10, 2000 EF1 24 km 0.4 mi 0
Jan 29, 1998 EF1 43 km 0.5 mi 0
Mar 27, 1991 EF1 48 km 0.2 mi 0
Mar 19, 1991 EF1 6 km 1.0 mi 0
Feb 20, 1980 EF1 16 km 0.1 mi 0
Dec 18, 1978 EF1 61 km 0.8 mi 0
Oct 8, 1961 EF1 57 km 0.1 mi 0
Apr 13, 1956 EF1 12 km 0.1 mi 0
Aug 16, 2018 EF0 98 km 0.2 mi 0
Sep 22, 2007 EF0 40 km 0.1 mi 0
Mar 11, 2006 EF0 42 km 2.0 mi 0
Mar 10, 2006 EF0 43 km 0.2 mi 0
Feb 23, 2005 EF0 12 km 0.1 mi 0
Feb 19, 2005 EF0 77 km 2.2 mi 0
Feb 19, 2005 EF0 72 km 2.5 mi 0
Oct 17, 2004 EF0 61 km 0.2 mi 0
Jul 12, 1999 EF0 65 km 0.1 mi 0
Feb 8, 1998 EF0 40 km 3.0 mi 0
May 20, 1997 EF0 92 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 1.2 m (4 ft).

Year Location Cause Max Wave Deaths Distance
1862 S. CALIFORNIA Eruption + Earthquake 1.2 m — 16 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Salton Buttes (142 km).

Name Type Elevation Last Eruption Distance
Salton Buttes Lava dome(s) -40 m (-131 ft) 210 142 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: CEDAR (268,362 acres, 2003).

Year Name Acres Burned Distance
2003 CEDAR 268,362 34 km
2007 WITCH 167,551 46 km
2007 HARRIS 90,443 27 km
2002 PINES 65,407 63 km
2003 PARADISE 55,995 54 km
2007 POOMACHA 47,496 64 km
2003 MINE/OTAY 37,232 21 km
2008 YELLOW 33,232 83 km
2020 INDIA 24,193 83 km
2003 COYOTE 19,215 84 km
2007 AMMO FIRE 19,213 79 km
1993 GUEJITO 17,141 44 km
2006 HORSE 16,659 39 km
2020 VALLEY 16,517 32 km
1986 UNNAMED 16,390 87 km
1989 VAIL 15,632 77 km
2014 PULGAS 14,937 73 km
2011 EAGLE 14,743 83 km
1989 MATEO 13,280 95 km
1996 OTAY 322 12,238 22 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 57°F (14°C) 2.3 in Coldest
February 58°F (15°C) 2.2 in
March 59°F (15°C) 2.4 in Wettest
April 62°F (17°C) 0.9 in
May 65°F (18°C) 0.2 in
June 68°F (20°C) 0.1 in
July 70°F (21°C) 0.0 in Driest
August 74°F (23°C) 0.1 in Warmest
September 72°F (22°C) 0.2 in
October 68°F (20°C) 0.4 in
November 62°F (17°C) 1.3 in
December 57°F (14°C) 1.5 in

Lemon Grove has a seasonal temperature swing of 17°F / from 57°F in January to 74°F in August. Total annual precipitation is 11.9 inches, with March being the wettest month (2.4") and July the driest (0.0").

View full profile of Lemon Grove, CA →