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Weather & Climate in El Rio, CA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
El Rio enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 57°F in January while summers reach 69°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 14.7 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 102 feet.
Temperature
57°F Jan (14°C)
69°F Jul (20°C)
| Annual Average | 62.6°F |
| 16% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 102 ft (31 m) |
| Area | 2.0 sq mi (5.2 km²) |
| Population Density | 3,140/sq mi |
| Coordinates | 34.2454°N, 119.1568°W |
| Timezone | America/Los_Angeles |
| County | Ventura County County |
| Nearest Airport | Santa Barbara Municipal (SBA) 38 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 99.4 / 100 |
| Social Vulnerability | 29.8 / 100 |
| Community Resilience | 33.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | No Rating |
| Earthquake | Relatively High |
| Wildfire | Relatively High |
| Flood | Very High |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Relatively High |
| Coastal Flood | Relatively Moderate |
| Tsunami | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
3,575 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.7.
| Jan 17, 1994 | Northridge, California, earthquake | M6.7 | 57 km | 18 km |
| Jan 17, 1994 | 1km ENE of Granada Hills, California | M5.9 | 61 km | 5 km |
| Jun 28, 1991 | The 1991 Sierra Madre, California Earthquake | M5.8 | 107 km | 8 km |
| Jul 11, 1992 | 12km NW of California City, California | M5.7 | 146 km | 10 km |
| Jan 17, 1994 | 7km NNE of Simi Valley, California | M5.6 | 43 km | 9 km |
| Feb 28, 1990 | The 1990 Upland, California Earthquake | M5.5 | 135 km | 3 km |
| Apr 5, 2018 | 31km SW of Santa Cruz Is. (E end), CA | M5.3 | 71 km | 10 km |
| Mar 20, 1994 | 3km WNW of Panorama City, California | M5.2 | 63 km | 12 km |
| Jan 18, 1994 | 10km ESE of Piru, California | M5.2 | 45 km | 11 km |
| Aug 7, 2024 | 24 km SW of Lamont, CA | M5.2 | 96 km | 12 km |
| Jan 17, 1994 | 9km N of Chatsworth, California | M5.2 | 51 km | 5 km |
| May 28, 1993 | 21km SW of Lamont, California | M5.2 | 101 km | 21 km |
| Mar 29, 2014 | 2km NW of Brea, CA | M5.1 | 120 km | 5 km |
| Aug 20, 2023 | 7 km SE of Ojai, CA | M5.1 | 18 km | 5 km |
| Jan 19, 1994 | 10km SSW of Valencia, California | M5.1 | 52 km | 11 km |
| Apr 26, 1997 | 12km ESE of Piru, California | M5.1 | 47 km | 16 km |
| Jan 29, 1994 | 6km NNE of Chatsworth, California | M5.1 | 54 km | 1 km |
| Jan 19, 1994 | 8km ESE of Piru, California | M5.1 | 44 km | 14 km |
| Sep 29, 2004 | 25km SSW of Bodfish, California | M5.0 | 136 km | 3 km |
| Jun 26, 1995 | 11km SW of Valencia, California | M5.0 | 48 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
39 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 46 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 1, 1983 | EF2 | 78 km | 3.5 mi | 0 |
| Nov 9, 1982 | EF2 | 65 km | 1.0 mi | 0 |
| Nov 7, 1966 | EF2 | 88 km | 10.3 mi | 0 |
| Nov 7, 1966 | EF2 | 88 km | 0.1 mi | 0 |
| Mar 22, 2023 | EF1 | 99 km | 0.5 mi | 0 |
| Mar 20, 1992 | EF1 | 91 km | 0.2 mi | 0 |
| Oct 1, 1983 | EF1 | 83 km | 0.3 mi | 0 |
| Nov 9, 1982 | EF1 | 50 km | 0.2 mi | 0 |
| Mar 29, 1982 | EF1 | 99 km | 2.0 mi | 0 |
| Jan 31, 1979 | EF1 | 73 km | 0.1 mi | 0 |
| Jan 3, 1977 | EF1 | 64 km | 0.1 mi | 0 |
| Nov 9, 1964 | EF1 | 76 km | 1.0 mi | 0 |
| May 14, 1962 | EF1 | 89 km | 0.1 mi | 0 |
| Jan 18, 1955 | EF1 | 82 km | 3.0 mi | 0 |
| May 4, 2023 | EF0 | 96 km | 0.7 mi | 0 |
| May 4, 2023 | EF0 | 92 km | 0.1 mi | 0 |
| Mar 21, 2023 | EF0 | 40 km | 0.2 mi | 0 |
| Dec 25, 2019 | EF0 | 9 km | 0.8 mi | 0 |
| Dec 12, 2014 | EF0 | 85 km | 0.7 mi | 0 |
| Jan 21, 2010 | EF0 | 4 km | 1.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 3.4 m (11 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1812 | S. CALIFORNIA | Eruption + Earthquake | 3.4 m | 1 | 69 km |
| 1930 | S. CALIFORNIA | Eruption + Earthquake | 3.1 m | 1 | 53 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 57 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 99 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: THOMAS (281,982 acres, 2017).
| Year | Name | Acres Burned | Distance |
| 2017 | THOMAS | 281,982 | 27 km |
| 2007 | ZACA | 241,846 | 68 km |
| 2009 | STATION | 165,368 | 94 km |
| 2006 | DAY | 159,713 | 45 km |
| 1985 | WHEELER 2 | 126,854 | 35 km |
| 2003 | SIMI | 107,756 | 35 km |
| 2018 | WOOLSEY | 97,962 | 33 km |
| 2003 | PIRU | 63,920 | 38 km |
| 1985 | FERNDALE | 46,724 | 19 km |
| 1993 | MARRE | 44,309 | 91 km |
| 2016 | SAND | 41,561 | 76 km |
| 2007 | BUCKWEED | 41,332 | 72 km |
| 1993 | GREEN MEADOWS | 38,115 | 22 km |
| 2007 | RANCH | 37,009 | 50 km |
| 2016 | REY | 33,323 | 64 km |
| 2013 | POWERHOUSE | 32,329 | 80 km |
| 2020 | LAKE | 30,971 | 73 km |
| 1993 | STECKEL | 26,202 | 15 km |
| 2005 | TOPANGA | 24,133 | 43 km |
| 1997 | HOPPER | 24,072 | 40 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 57°F (14°C) | 3.3 in | |
| February | 56°F (13°C) | 3.4 in | Wettest |
| March | 57°F (14°C) | 2.8 in | |
| April | 59°F (15°C) | 0.8 in | |
| May | 62°F (17°C) | 0.2 in | |
| June | 65°F (18°C) | 0.0 in | |
| July | 69°F (20°C) | 0.0 in | Driest |
| August | 70°F (21°C) | 0.0 in | Warmest |
| September | 69°F (20°C) | 0.2 in | |
| October | 65°F (19°C) | 0.3 in | |
| November | 60°F (15°C) | 1.8 in | |
| December | 55°F (13°C) | 2.1 in | Coldest |
El Rio has a seasonal temperature swing of 15°F / from 55°F in December to 70°F in August. Total annual precipitation is 14.9 inches, with February being the wettest month (3.4") and July the driest (0.0").