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Weather & Climate in Mount Shasta, CA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mount Shasta experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 36°F in January while summers reach 68°F in July. The area gets 275 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 42.6 inches. The area receives 89.3 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 3,616 feet.
Temperature
36°F Jan (2°C)
68°F Jul (20°C)
| Annual Average | 50.0°F |
| 7% below US avg | |
| January Average | 36°F (2°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 3,616 ft (1,102 m) |
| Area | 3.8 sq mi (9.8 km²) |
| Population Density | 851/sq mi |
| Coordinates | 41.3209°N, 122.3155°W |
| Timezone | America/Los_Angeles |
| County | Siskiyou County County |
| Nearest Airport | Redding Regional (RDD) 57 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.0 / 100 |
| Social Vulnerability | 79.4 / 100 |
| Community Resilience | 44.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Relatively High |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1,094 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Sep 21, 1993 | 27 km WNW of Klamath Falls, Oregon | M6.0 | 117 km | 9 km |
| Sep 21, 1993 | 22 km WNW of Klamath Falls, Oregon | M5.9 | 113 km | 9 km |
| Feb 13, 2012 | 26 km NNW of Willow Creek, California | M5.6 | 125 km | 27 km |
| Apr 30, 2008 | 3 km NNW of Burnt Ranch, California | M5.4 | 113 km | 28 km |
| Nov 26, 1998 | 7km NW of Redding, CA | M5.1 | 78 km | 25 km |
| Dec 4, 1993 | 20 km WNW of Klamath Falls, Oregon | M5.1 | 111 km | 5 km |
| Sep 8, 2023 | 12 km NE of Burney, CA | M5.0 | 75 km | 16 km |
| Jan 18, 1990 | 27 km ESE of Orick, California | M4.9 | 122 km | 35 km |
| Jul 21, 2016 | 19km SSE of Blue Lake, CA | M4.8 | 148 km | 26 km |
| Jan 19, 2008 | 31 km NW of Rancho Tehama Reserve, California | M4.7 | 131 km | 2 km |
| Nov 26, 1998 | 5km NNW of Redding, CA | M4.6 | 79 km | 25 km |
| Jan 19, 2008 | 34 km WNW of Rancho Tehama Reserve, California | M4.5 | 134 km | 10 km |
| Jul 21, 1998 | 4 km NNW of Redding, California | M4.5 | 78 km | 23 km |
| Aug 28, 2016 | 8 km ESE of Mad River, California | M4.5 | 135 km | 36 km |
| Mar 9, 1992 | 8 km SE of Hyampom, California | M4.4 | 122 km | 33 km |
| May 10, 2005 | 10 km NW of Burney, California | M4.4 | 63 km | 17 km |
| Mar 27, 1997 | 14km SW of Manton, CA | M4.4 | 114 km | 8 km |
| Dec 20, 2000 | 12 km NNW of Burney, California | M4.4 | 64 km | 17 km |
| Jun 14, 1991 | 8 km SW of Hat Creek, California | M4.4 | 85 km | 11 km |
| Feb 6, 2019 | 13km ESE of Blue Lake, CA | M4.4 | 138 km | 26 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
3 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.
| Date | Rating | Distance | Path | Fatalities |
| May 19, 1962 | EF1 | 99 km | 0.5 mi | 0 |
| May 22, 1958 | EF1 | 97 km | 2.7 mi | 0 |
| Apr 17, 2007 | EF0 | 97 km | 1.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Shasta (14 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Shasta | Stratovolcano | 4,317 m (14,163 ft) | 1250 | 14 km |
| Medicine Lake | Shield | 2,412 m (7,913 ft) | 1060 | 71 km |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 115 km |
| Crater Lake | Caldera | 2,487 m (8,159 ft) | -2850 | 180 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CARR (233,710 acres, 2018).
| Year | Name | Acres Burned | Distance |
| 2018 | CARR | 233,710 | 71 km |
| 2021 | HAYPRESS | 204,549 | 60 km |
| 2020 | RED SALMON COMPLEX | 147,535 | 94 km |
| 2021 | ANTELOPE | 141,960 | 58 km |
| 1999 | MEGRAM- ORLEANS | 125,337 | 99 km |
| 2014 | HAPPY CAMP COMPLEX | 118,491 | 85 km |
| 2006 | PIGEON | 100,962 | 85 km |
| 2021 | MCCASH | 95,762 | 90 km |
| 2020 | CALDWELL | 81,870 | 85 km |
| 2015 | RIVER COMPLEX | 78,531 | 99 km |
| 2008 | PANTHER | 71,448 | 92 km |
| 1987 | KING TITUS | 71,390 | 96 km |
| 2018 | DELTA | 63,732 | 37 km |
| 2017 | ISLAND | 62,931 | 69 km |
| 1992 | FOUNTAIN | 62,340 | 66 km |
| 2022 | MCKINNEY | 60,592 | 70 km |
| 1987 | YELLOW 2 | 53,626 | 84 km |
| 2012 | BAGLEY | 47,731 | 39 km |
| 2018 | HIRZ | 46,700 | 38 km |
| 2008 | BEAR WALLOW COMPLEX (UKONOM) | 40,029 | 83 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 36°F (2°C) | 6.9 in | Wettest |
| February | 37°F (3°C) | 5.8 in | |
| March | 40°F (4°C) | 5.6 in | |
| April | 44°F (7°C) | 2.8 in | |
| May | 52°F (11°C) | 1.9 in | |
| June | 59°F (15°C) | 1.0 in | |
| July | 68°F (20°C) | 0.4 in | Warmest, Driest |
| August | 65°F (18°C) | 0.6 in | |
| September | 59°F (15°C) | 1.0 in | |
| October | 51°F (11°C) | 2.5 in | |
| November | 40°F (4°C) | 5.7 in | |
| December | 34°F (1°C) | 5.9 in | Coldest |
Mount Shasta has a seasonal temperature swing of 34°F / from 34°F in December to 68°F in July. Total annual precipitation is 39.9 inches, with January being the wettest month (6.9") and July the driest (0.4").