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Weather & Climate in Grenada, CA

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Grenada experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 37°F in January while summers reach 74°F in July. The area gets 316 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 18.9 inches (drier than the 38-inch national average). The area receives 11.6 inches of snow annually. Air quality is rated Good with a median AQI of 48. The city sits at an elevation of 2,578 feet.

Temperature

37°F Jan (3°C) 74°F Jul (23°C)
Annual Average53.5°F
1% below US avg
January Average37°F (3°C)
July Average74°F (23°C)
Sunny Days316 days/yr

Geography

Elevation2,578 ft (786 m)
Area0.5 sq mi (1.3 km²)
Population Density444/sq mi
Coordinates41.6401°N, 122.5266°W
TimezoneAmerica/Los_Angeles
CountySiskiyou County County
Nearest AirportRogue Valley International - Medford (MFR)
54 miles away

Precipitation & Snow

Annual Rainfall 18.9"
50% below US avg
Snowfall 11.6"
Wettest Month (Jan) 4.25"
Driest Month (Jul) 0.39"

Air Quality

AQI Median48.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score89.0 / 100
Social Vulnerability79.4 / 100
Community Resilience44.8 / 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

896 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 89 km 9 km
Sep 21, 1993 22 km WNW of Klamath Falls, Oregon M5.9 86 km 9 km
Feb 13, 2012 26 km NNW of Willow Creek, California M5.6 119 km 27 km
Apr 30, 2008 3 km NNW of Burnt Ranch, California M5.4 121 km 28 km
Nov 26, 1998 7km NW of Redding, CA M5.1 113 km 25 km
Dec 4, 1993 20 km WNW of Klamath Falls, Oregon M5.1 84 km 5 km
Sep 8, 2023 12 km NE of Burney, CA M5.0 111 km 16 km
Jan 18, 1990 27 km ESE of Orick, California M4.9 116 km 35 km
Nov 26, 1998 5km NNW of Redding, CA M4.6 114 km 25 km
Jul 21, 1998 4 km NNW of Redding, California M4.5 113 km 23 km
May 10, 2005 10 km NW of Burney, California M4.4 100 km 17 km
Mar 9, 1992 8 km SE of Hyampom, California M4.4 138 km 33 km
Dec 20, 2000 12 km NNW of Burney, California M4.4 101 km 17 km
Jun 14, 1991 8 km SW of Hat Creek, California M4.4 123 km 11 km
Feb 6, 2019 13km ESE of Blue Lake, CA M4.4 141 km 26 km
Sep 8, 2023 12 km NE of Burney, CA M4.3 110 km 12 km
Jan 23, 2024 16 km WSW of Klamath, CA M4.3 140 km 36 km
Jan 19, 1994 15 km WNW of Klamath Falls, Oregon M4.3 86 km -1 km
Dec 20, 2000 11 km NNW of Burney, California M4.3 101 km 18 km
May 15, 2002 9 km W of Klamath Falls, Oregon M4.3 84 km 6 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

5 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date Rating Distance Path Fatalities
May 19, 1962 EF1 79 km 0.5 mi 0
May 22, 1958 EF1 93 km 2.7 mi 0
Apr 17, 2007 EF0 76 km 1.0 mi 0
Apr 17, 2004 EF0 87 km 0.2 mi 0
May 30, 1995 EF0 91 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: 3.1 m (10 ft).

Year Location Cause Max Wave Deaths Distance
1873 N. CALIFORNIA Eruption + Earthquake 3.1 m — 129 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Shasta (38 km).

Name Type Elevation Last Eruption Distance
Shasta Stratovolcano 4,317 m (14,163 ft) 1250 38 km
Medicine Lake Shield 2,412 m (7,913 ft) 1060 81 km
Crater Lake Caldera 2,487 m (8,159 ft) -2850 147 km
Lassen Volcanic Center Stratovolcano 3,187 m (10,456 ft) 1917 154 km
Cinnamon Butte Pyroclastic cone(s) 1,956 m (6,417 ft) Unknown 181 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: HAYPRESS (204,549 acres, 2021).

Year Name Acres Burned Distance
2021 HAYPRESS 204,549 69 km
2020 SLATER 157,784 90 km
2020 RED SALMON COMPLEX 147,535 94 km
2021 ANTELOPE 141,960 63 km
2014 HAPPY CAMP COMPLEX 118,491 56 km
2006 PIGEON 100,962 95 km
2008 SISKIYOU-BLUE 2 COMPLEX (BLUE 2) 100,823 94 km
2021 MCCASH 95,762 69 km
2017 OAK 95,692 88 km
2020 CALDWELL 81,870 90 km
2008 PANTHER 71,448 72 km
1987 KING TITUS 71,390 72 km
2018 DELTA 63,732 71 km
2017 ISLAND 62,931 56 km
2022 MCKINNEY 60,592 32 km
1987 YELLOW 2 53,626 70 km
2012 BAGLEY 47,731 78 km
2018 HIRZ 46,700 76 km
2008 BEAR WALLOW COMPLEX (UKONOM) 40,029 73 km
2018 NATCHEZ 38,800 91 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 37°F (3°C) 4.3 in Wettest
February 38°F (4°C) 3.2 in
March 41°F (5°C) 2.9 in
April 46°F (8°C) 1.6 in
May 53°F (12°C) 1.3 in
June 61°F (16°C) 0.9 in
July 74°F (23°C) 0.4 in Warmest, Driest
August 68°F (20°C) 0.6 in
September 62°F (16°C) 0.8 in
October 52°F (11°C) 1.7 in
November 41°F (5°C) 3.9 in
December 35°F (2°C) 4.2 in Coldest

Grenada has a seasonal temperature swing of 40°F / from 35°F in December to 74°F in July. Total annual precipitation is 25.7 inches, with January being the wettest month (4.3") and July the driest (0.4").

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