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Weather & Climate in Boulevard, CA

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

Boulevard enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 48°F in January while summers reach 72°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 12.6 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 3,632 feet.

Temperature

48°F Jan (9°C) 72°F Jul (22°C)
Annual Average58.4°F
8% above US avg
January Average48°F (9°C)
July Average72°F (22°C)
Sunny Days330 days/yr

Geography

Elevation3,632 ft (1,107 m)
Area3.9 sq mi (10.1 km²)
Population Density128/sq mi
Coordinates32.6640°N, 116.2896°W
TimezoneAmerica/Los_Angeles
CountySan Diego County County
Nearest AirportCalexico International (CXL)
45 miles away

Precipitation & Snow

Annual Rainfall 12.6"
67% below US avg
Wettest Month (Jan) 1.97"
Driest Month (Jun) 0.08"

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

12,517 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.2.

Apr 4, 2010 The 2010 Sierra El Mayor, B.C., Mexico Earthquake M7.2 102 km 10 km
Apr 23, 1992 The 1992 Joshua Tree, California Earthquake M6.1 144 km 12 km
Dec 30, 2009 12km N of Delta, B.C., MX M5.8 106 km 6 km
Jun 15, 2010 8km ESE of Ocotillo, CA M5.7 36 km 9 km
Dec 8, 2001 22km S of Estacion Coahuila, B.C., MX M5.7 142 km 7 km
Feb 22, 2002 13km WSW of Delta, B.C., MX M5.7 99 km 7 km
Apr 4, 2010 12km SSW of Estacion Coahuila, B.C., MX M5.7 132 km 10 km
Apr 4, 2010 9km SW of Delta, B.C., MX M5.4 105 km 10 km
Jul 7, 2010 20km NNW of Borrego Springs, CA M5.4 86 km 12 km
Aug 26, 2012 4km NNW of Brawley, CA M5.4 80 km 8 km
Apr 4, 2010 12km WNW of Alberto Oviedo Mota, B.C., MX M5.4 104 km 10 km
May 24, 2006 6km SSW of Delta, B.C., MX M5.4 107 km 6 km
Dec 3, 1991 71km E of Maneadero, B.C., MX M5.3 110 km 6 km
Aug 26, 2012 5km NNW of Brawley, CA M5.3 79 km 8 km
Apr 8, 2010 12km SW of Alberto Oviedo Mota, B.C., MX M5.3 111 km 10 km
Mar 23, 1994 35km E of Maneadero, B.C., MX M5.3 104 km 5 km
Apr 4, 2010 15km SSW of Progreso, B.C., MX M5.3 66 km 10 km
Jun 5, 2021 11km W of Calipatria, CA M5.3 81 km 6 km
Apr 5, 2010 27km SSW of Estacion Coahuila, B.C., MX M5.2 133 km 10 km
Apr 14, 2025 5 km S of Julian, CA M5.2 50 km 14 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

17 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1. Total: 1 injury.

Date Rating Distance Path Fatalities
Nov 10, 2000 EF1 75 km 0.4 mi 0
Aug 29, 1993 EF1 70 km 0.1 mi 0
Mar 27, 1991 EF1 98 km 0.2 mi 0
Mar 19, 1991 EF1 76 km 1.0 mi 0
Feb 20, 1980 EF1 86 km 0.1 mi 0
Apr 13, 1956 EF1 74 km 0.1 mi 0
Mar 11, 2006 EF0 77 km 2.0 mi 0
Feb 23, 2005 EF0 74 km 0.1 mi 0
Jul 12, 1999 EF0 50 km 0.1 mi 0
Sep 24, 1997 EF0 59 km 1.5 mi 0
May 20, 1997 EF0 65 km 0.1 mi 0
May 5, 1992 EF0 70 km 0.2 mi 0
Jan 14, 1990 EF0 76 km 0.1 mi 0
Feb 4, 1985 EF0 77 km 0.1 mi 0
Mar 17, 1982 EF0 84 km 0.1 mi 0
Jan 18, 1979 EF0 77 km 0.1 mi 0
Feb 23, 1971 EF0 67 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 — 85 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Salton Buttes (86 km).

Name Type Elevation Last Eruption Distance
Salton Buttes Lava dome(s) -40 m (-131 ft) 210 86 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 54 km
2007 WITCH 167,551 64 km
2007 HARRIS 90,443 45 km
2002 PINES 65,407 60 km
2003 PARADISE 55,995 84 km
2007 POOMACHA 47,496 92 km
2003 MINE/OTAY 37,232 53 km
2003 COYOTE 19,215 85 km
1993 GUEJITO 17,141 80 km
2006 HORSE 16,659 32 km
2020 VALLEY 16,517 38 km
2011 EAGLE 14,743 74 km
1996 OTAY 322 12,238 55 km
2012 WILSON 12,048 61 km
2001 VIEJAS 10,942 44 km
1987 PALOMAR 10,256 96 km
1995 SYCAMORE 9,626 41 km
2012 STEWART 9,501 56 km
1996 HARMONY 9,289 97 km
2004 MATAGUAY 9,087 70 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 48°F (9°C) 2.0 in Wettest
February 48°F (9°C) 1.6 in
March 50°F (10°C) 1.9 in
April 55°F (13°C) 0.8 in
May 61°F (16°C) 0.3 in
June 69°F (21°C) 0.1 in Driest
July 72°F (22°C) 0.5 in
August 76°F (25°C) 0.7 in Warmest
September 71°F (22°C) 0.5 in
October 62°F (17°C) 0.6 in
November 53°F (12°C) 1.2 in
December 47°F (8°C) 1.6 in Coldest

Boulevard has a seasonal temperature swing of 30°F / from 47°F in December to 76°F in August. Total annual precipitation is 11.5 inches, with January being the wettest month (2.0") and June the driest (0.1").

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