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. Annual precipitation totals 12.6 inches (drier than the 38-inch national average). Air quality is rated Moderate with a median AQI of 71 / residents may notice occasional air quality concerns. 13% of days have good air quality. The city sits at an elevation of 3,632 feet.
Temperature
48°F Jan (9°C)
72°F Jul (22°C)
| Annual Average | 58.4°F |
| 8% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 3,632 ft (1,107 m) |
| Area | 3.9 sq mi (10.1 km²) |
| Population Density | 128/sq mi |
| Coordinates | 32.6640°N, 116.2896°W |
| Timezone | America/Los_Angeles |
| County | San Diego County County |
| Nearest Airport | Calexico International (CXL) 45 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 71.0 |
| Rating | Moderate |
| Good Days % | 12.8% |
| Unhealthy Days | 52 |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.7 / 100 |
| Social Vulnerability | 24.8 / 100 |
| Community Resilience | 8.3 / 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) | 2.4 in | |
| February | 48°F (9°C) | 2.8 in | Wettest |
| March | 50°F (10°C) | 1.6 in | |
| April | 53°F (12°C) | 0.7 in | |
| May | 59°F (15°C) | 0.3 in | |
| June | 65°F (19°C) | 0.1 in | Driest |
| July | 72°F (22°C) | 0.2 in | |
| August | 74°F (23°C) | 0.1 in | Warmest |
| September | 69°F (21°C) | 0.7 in | |
| October | 61°F (16°C) | 0.5 in | |
| November | 53°F (12°C) | 0.9 in | |
| December | 47°F (9°C) | 2.3 in | Coldest |
Boulevard has a seasonal temperature swing of 27°F / from 47°F in December to 74°F in August. Total annual precipitation is 12.6 inches, with February being the wettest month (2.8") and June the driest (0.1").