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Weather & Climate in Julian, CA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Julian enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 46°F in January while summers reach 74°F in July. The area gets 328 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 24.5 inches (drier than the 38-inch national average). The area receives 6.4 inches of snow annually. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 4,335 feet.
Temperature
46°F Jan (8°C)
74°F Jul (23°C)
| Annual Average | 57.8°F |
| 7% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 328 days/yr |
Geography
| Elevation | 4,335 ft (1,321 m) |
| Area | 7.9 sq mi (20.4 km²) |
| Population Density | 189/sq mi |
| Coordinates | 33.0735°N, 116.5889°W |
| Timezone | America/Los_Angeles |
| County | San Diego County County |
| Nearest Airport | San Diego International (SAN) 42 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
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
13,733 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.3.
| Jun 28, 1992 | The 1992 Landers, California Earthquake | M7.3 | 126 km | 0 km |
| Apr 4, 2010 | The 2010 Sierra El Mayor, B.C., Mexico Earthquake | M7.2 | 149 km | 10 km |
| Jun 28, 1992 | The 1992 Big Bear, California Earthquake | M6.3 | 128 km | 4 km |
| Apr 23, 1992 | The 1992 Joshua Tree, California Earthquake | M6.1 | 102 km | 12 km |
| Dec 30, 2009 | 12km N of Delta, B.C., MX | M5.8 | 147 km | 6 km |
| Jun 28, 1992 | 3km NE of Yucca Valley, California | M5.8 | 119 km | -1 km |
| Jun 15, 2010 | 8km ESE of Ocotillo, CA | M5.7 | 75 km | 9 km |
| Feb 22, 2002 | 13km WSW of Delta, B.C., MX | M5.7 | 145 km | 7 km |
| Jun 28, 1992 | 2km SSW of Joshua Tree, California | M5.7 | 119 km | 6 km |
| Jun 29, 1992 | 3km ESE of Yucca Valley, California | M5.7 | 116 km | 10 km |
| Oct 16, 1999 | 7km ENE of Running Springs, CA | M5.6 | 136 km | 6 km |
| Jun 28, 1992 | 11km SSE of Big Bear Lake, California | M5.5 | 124 km | 10 km |
| Jun 28, 1992 | 0km E of Yucca Valley, CA | M5.5 | 117 km | 8 km |
| Jul 7, 2010 | 20km NNW of Borrego Springs, CA | M5.4 | 40 km | 12 km |
| Aug 26, 2012 | 4km NNW of Brawley, CA | M5.4 | 98 km | 8 km |
| Jun 28, 1992 | 26km NNW of Yucca Valley, CA | M5.4 | 141 km | 4 km |
| Jul 1, 1992 | 24km N of Yucca Valley, California | M5.3 | 140 km | 5 km |
| Aug 26, 2012 | 5km NNW of Brawley, CA | M5.3 | 97 km | 8 km |
| Nov 27, 1992 | 10km NNW of Big Bear City, California | M5.3 | 144 km | 0 km |
| Jun 28, 1992 | 1km N of Big Bear Lake, California | M5.3 | 135 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
45 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1. Total: 7 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 6, 2015 | EF1 | 71 km | 4.0 mi | 0 |
| Feb 19, 2005 | EF1 | 70 km | 2.8 mi | 0 |
| Nov 10, 2000 | EF1 | 43 km | 0.4 mi | 0 |
| Jan 29, 1998 | EF1 | 66 km | 0.5 mi | 0 |
| Dec 22, 1996 | EF1 | 96 km | 0.1 mi | 0 |
| Aug 29, 1993 | EF1 | 98 km | 0.1 mi | 0 |
| Mar 27, 1991 | EF1 | 55 km | 0.2 mi | 0 |
| Mar 19, 1991 | EF1 | 60 km | 1.0 mi | 0 |
| Feb 20, 1980 | EF1 | 66 km | 0.1 mi | 0 |
| Dec 18, 1978 | EF1 | 75 km | 0.8 mi | 0 |
| Jul 20, 1974 | EF1 | 82 km | 1.0 mi | 0 |
| Oct 8, 1961 | EF1 | 72 km | 0.1 mi | 0 |
| Apr 13, 1956 | EF1 | 67 km | 0.1 mi | 0 |
| Oct 8, 2022 | EF0 | 91 km | 1.6 mi | 0 |
| Aug 16, 2018 | EF0 | 55 km | 0.2 mi | 0 |
| Oct 17, 2015 | EF0 | 86 km | 0.0 mi | 0 |
| Sep 9, 2012 | EF0 | 99 km | 0.0 mi | 0 |
| Aug 12, 2012 | EF0 | 96 km | 0.5 mi | 0 |
| Sep 22, 2007 | EF0 | 66 km | 0.1 mi | 0 |
| Jul 23, 2006 | EF0 | 90 km | 1.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 1.2 m (4 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1862 | S. CALIFORNIA | Eruption + Earthquake | 1.2 m | — | 71 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (92 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 92 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 | 22 km |
| 2007 | WITCH | 167,551 | 17 km |
| 2007 | HARRIS | 90,443 | 51 km |
| 2002 | PINES | 65,407 | 8 km |
| 2003 | PARADISE | 55,995 | 34 km |
| 2007 | POOMACHA | 47,496 | 40 km |
| 2006 | ESPERANZA | 40,566 | 92 km |
| 2003 | MINE/OTAY | 37,232 | 56 km |
| 2008 | YELLOW | 33,232 | 88 km |
| 2022 | FAIRVIEW | 28,680 | 72 km |
| 2013 | MOUNTAIN | 28,202 | 74 km |
| 1998 | EDNA | 27,561 | 99 km |
| 2020 | INDIA | 24,193 | 86 km |
| 1993 | CALIFORNIA | 23,899 | 75 km |
| 1994 | PALM | 21,040 | 63 km |
| 2013 | SILVER | 20,863 | 92 km |
| 2003 | COYOTE | 19,215 | 35 km |
| 2007 | AMMO FIRE | 19,213 | 88 km |
| 1993 | GUEJITO | 17,141 | 34 km |
| 2006 | HORSE | 16,659 | 39 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 4.0 in | |
| February | 47°F (8°C) | 4.0 in | |
| March | 48°F (9°C) | 4.3 in | Wettest |
| April | 53°F (12°C) | 1.7 in | |
| May | 59°F (15°C) | 0.6 in | |
| June | 67°F (19°C) | 0.1 in | Driest |
| July | 74°F (23°C) | 0.4 in | |
| August | 74°F (23°C) | 0.7 in | Warmest |
| September | 70°F (21°C) | 0.8 in | |
| October | 61°F (16°C) | 0.9 in | |
| November | 52°F (11°C) | 2.4 in | |
| December | 45°F (7°C) | 3.0 in | Coldest |
Julian has a seasonal temperature swing of 29°F / from 45°F in December to 74°F in August. Total annual precipitation is 22.9 inches, with March being the wettest month (4.3") and June the driest (0.1").