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Weather & Climate in Catheys Valley, CA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Catheys Valley enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 46°F in January while summers reach 79°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 11.8 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 1,317 feet.
Temperature
46°F Jan (8°C)
79°F Jul (26°C)
| Annual Average | 62.3°F |
| 15% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 1,317 ft (401 m) |
| Area | 23.5 sq mi (60.8 km²) |
| Population Density | 33/sq mi |
| Coordinates | 37.4277°N, 120.0960°W |
| Timezone | America/Los_Angeles |
| County | Merced County County |
| Nearest Airport | Merced Yosemite Regional (MCE) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.9 / 100 |
| Social Vulnerability | 61.7 / 100 |
| Community Resilience | 7.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively High |
| Winter Weather | Very Low |
| Lightning | Relatively High |
| Drought | Very High |
| Cold Wave | No Rating |
| Landslide | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
7,965 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Jul 8, 2021 | Antelope Valley, CA | M6.0 | 131 km | 7 km |
| Oct 24, 1990 | 3 km NE of Mono City, California | M5.8 | 111 km | 11 km |
| May 15, 1999 | 9 km WSW of Aspen Springs, California | M5.5 | 113 km | 3 km |
| Apr 18, 1990 | 5 km NNW of Aromas, California | M5.4 | 149 km | 5 km |
| Sep 18, 2004 | 27 km NW of Benton, California | M5.4 | 141 km | 3 km |
| Sep 18, 2004 | 27 km NW of Benton, California | M5.4 | 143 km | 0 km |
| Oct 21, 2012 | 24 km NE of San Lucas, California | M5.3 | 142 km | 9 km |
| Apr 11, 2020 | 30km SE of Bodie, CA | M5.2 | 139 km | 8 km |
| Aug 12, 1998 | 10 km SW of Ridgemark, California | M5.1 | 142 km | 9 km |
| Apr 18, 1990 | 4 km E of Interlaken, California | M5.1 | 150 km | 7 km |
| Jul 8, 2021 | 32km SE of Markleeville, CA | M5.0 | 131 km | 7 km |
| Jan 16, 1993 | 9 km E of Gilroy, California | M4.9 | 129 km | 7 km |
| Apr 18, 1990 | 4 km NNW of Aromas, California | M4.9 | 149 km | 6 km |
| Apr 23, 1995 | 22 km NNE of Soledad, California | M4.9 | 134 km | 7 km |
| Apr 19, 1996 | 2 km E of Aromas, California | M4.9 | 147 km | 5 km |
| Jul 15, 1998 | 8 km W of Aspen Springs, California | M4.9 | 115 km | 4 km |
| Jun 9, 1998 | 8 km WNW of Aspen Springs, California | M4.9 | 116 km | 5 km |
| May 14, 2002 | 5 km SSW of Gilroy, California | M4.9 | 143 km | 7 km |
| Nov 30, 1997 | 2 km ESE of Mammoth Lakes, California | M4.9 | 104 km | 5 km |
| Nov 22, 1997 | 3 km ESE of Mammoth Lakes, California | M4.9 | 105 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
73 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 3 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Sep 5, 2020 | EF2 | 67 km | 12.0 mi | 0 |
| Mar 22, 1962 | EF2 | 75 km | 0.5 mi | 0 |
| Apr 27, 1953 | EF2 | 83 km | 0.1 mi | 0 |
| Mar 11, 2023 | EF1 | 68 km | 0.8 mi | 0 |
| Jan 10, 2023 | EF1 | 93 km | 0.4 mi | 0 |
| Sep 5, 2020 | EF1 | 82 km | 1.1 mi | 0 |
| Jan 17, 2019 | EF1 | 81 km | 0.3 mi | 0 |
| Nov 15, 2015 | EF1 | 64 km | 3.0 mi | 0 |
| Apr 14, 2006 | EF1 | 83 km | 0.5 mi | 0 |
| Dec 16, 2002 | EF1 | 39 km | 1.3 mi | 0 |
| May 20, 2002 | EF1 | 55 km | 2.7 mi | 0 |
| Feb 14, 1998 | EF1 | 71 km | 3.0 mi | 0 |
| Dec 12, 1996 | EF1 | 77 km | 0.6 mi | 0 |
| Nov 22, 1996 | EF1 | 33 km | 0.2 mi | 0 |
| Jan 14, 1995 | EF1 | 38 km | 1.0 mi | 0 |
| Feb 19, 1980 | EF1 | 80 km | 1.7 mi | 0 |
| Mar 14, 1979 | EF1 | 100 km | 2.0 mi | 0 |
| Mar 4, 1978 | EF1 | 67 km | 1.0 mi | 0 |
| Mar 4, 1978 | EF1 | 69 km | 2.5 mi | 0 |
| Mar 1, 1978 | EF1 | 78 km | 1.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Mammoth Mountain (97 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Mammoth Mountain | Lava dome(s) | 3,369 m (11,053 ft) | 1260 | 97 km |
| Mono-Inyo Craters | Lava dome(s) | 2,796 m (9,173 ft) | 1380 | 103 km |
| Mono Lake Volcanic Field | Pyroclastic cone(s) | 2,121 m (6,959 ft) | 1790 | 113 km |
| Golden Trout Creek | Volcanic field | 2,886 m (9,469 ft) | -5550 | 198 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CREEK (381,441 acres, 2020).
| Year | Name | Acres Burned | Distance |
| 2020 | CREEK | 381,441 | 79 km |
| 2013 | RIM | 257,084 | 55 km |
| 2018 | FERGUSON | 97,307 | 34 km |
| 2017 | DETWILER | 83,297 | 14 km |
| 1996 | ACKERSON COMPLEX (ACKERSON) | 58,161 | 59 km |
| 1987 | PAPER | 49,296 | 55 km |
| 1987 | LARSON | 49,250 | 37 km |
| 1987 | HAMM | 39,333 | 41 km |
| 2008 | TELEGRAPH | 33,479 | 21 km |
| 2013 | ASPEN | 23,564 | 75 km |
| 2022 | OAK | 19,408 | 24 km |
| 1992 | GULCH | 18,019 | 90 km |
| 1990 | A-ROCK | 17,706 | 41 km |
| 1996 | ROGGE | 17,559 | 52 km |
| 1996 | MERCY | 16,993 | 90 km |
| 2001 | DARBY | 14,734 | 87 km |
| 2014 | FRENCH | 14,534 | 67 km |
| 2018 | LIONS | 14,252 | 84 km |
| 2017 | RAILROAD | 12,765 | 43 km |
| 2018 | WAVERLY | 12,238 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 4.3 in | Wettest |
| February | 48°F (9°C) | 4.1 in | |
| March | 51°F (11°C) | 3.8 in | |
| April | 56°F (13°C) | 2.3 in | |
| May | 64°F (18°C) | 0.6 in | |
| June | 72°F (22°C) | 0.2 in | |
| July | 79°F (26°C) | 0.0 in | Warmest, Driest |
| August | 79°F (26°C) | 0.1 in | |
| September | 73°F (23°C) | 0.4 in | |
| October | 64°F (18°C) | 1.3 in | |
| November | 52°F (11°C) | 3.7 in | |
| December | 45°F (7°C) | 3.7 in | Coldest |
Catheys Valley has a seasonal temperature swing of 34°F / from 45°F in December to 79°F in July. Total annual precipitation is 24.4 inches, with January being the wettest month (4.3") and July the driest (0.0").