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Weather & Climate in Okanagan-Similkameen F, BC

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

Okanagan-Similkameen F has a cool climate with an average annual temperature of 45°F (7°C). Winters average 25°F in January while summers reach 65°F in July. The area gets 309 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 14.8 inches (drier than the 38-inch national average). The area receives 5.4 inches of snow annually. The city sits at an elevation of 1,650 feet.

Temperature

25°F Jan (-4°C) 65°F Jul (18°C)
Annual Average45.1°F
16% below US avg
January Average25°F (-4°C)
July Average65°F (18°C)
Sunny Days309 days/yr

Geography

Elevation1,650 ft (503 m)
Area219.6 sq mi (568.9 km²)
Population Density10/sq mi
Coordinates49.6843°N, 119.7292°W
TimezoneAmerica/Vancouver

Precipitation & Snow

Annual Rainfall 14.8"
61% below US avg
Snowfall 5.4"
Wettest Month (Jun) 1.73"
Driest Month (Mar) 0.87"

Air Quality

Earthquake History

93 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.6.

Jun 24, 1997 16 km WNW of Malott, Washington M4.6 147 km 10 km
Aug 17, 2002 39 km ESE of Merritt, Canada M4.5 51 km 10 km
Sep 10, 2016 23 km E of Oliver, Canada M3.9 64 km 1 km
Mar 3, 1998 16 km NNE of Grand Forks, Canada M3.8 115 km 5 km
Sep 19, 1993 32 km ENE of Merritt, Canada M3.8 71 km 10 km
Jan 26, 1992 9 km SSE of Okanagan Falls, Canada M3.7 48 km 10 km
Jun 24, 1997 16 km NW of Malott, Washington M3.6 146 km 7 km
Jan 12, 1997 15 km N of Princeton, Canada M3.5 56 km 5 km
Apr 28, 2023 38 km SW of Princeton, Canada M3.4 97 km 5 km
Mar 8, 1992 27 km SW of Princeton, Canada M3.4 87 km 5 km
Jul 19, 2025 34 km W of Okanagan Falls, Canada M3.4 40 km 7 km
Apr 20, 2025 8 km NW of Tonasket, Washington M3.2 103 km 15 km
Feb 6, 2005 32 km NE of Marblemount, Washington M3.2 147 km -1 km
Aug 20, 2003 39 km ESE of Merritt, Canada M3.2 51 km 10 km
Apr 13, 2025 7 km NW of Tonasket, Washington M3.2 105 km 15 km
Mar 3, 1998 15 km NNE of Grand Forks, Canada M3.2 118 km 5 km
May 28, 2022 55 km NE of Marblemount, Washington M3.2 126 km 0 km
May 15, 2025 9 km NW of Tonasket, Washington M3.1 103 km 15 km
Apr 13, 2025 6 km NW of Tonasket, Washington M3.1 105 km 15 km
Aug 19, 2017 23 km WNW of Princeton, Canada M3.1 79 km 6 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 6.0 m (20 ft).

Year Location Cause Max Wave Deaths Distance
1905 THOMPSON RIVER Meteorological 6.0 m 15 142 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

1 volcano within 200 km. Closest: Baker (182 km).

Name Type Elevation Last Eruption Distance
Baker Stratovolcano(es) 3,285 m (10,778 ft) 1880 182 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

17 wildfires (100+ acres) recorded within 100 km. Largest: DIAMOND CREEK (117,527 acres, 2017).

Year Name Acres Burned Distance
2017 DIAMOND CREEK 117,527 94 km
2006 TRIPOD COMPLEX (SPUR PEAK) 115,123 96 km
2003 FAWN PEAK COMPLEX (FAREWELL) 77,444 100 km
2020 PALMER 18,015 91 km
2023 EAGLE BLUFF 16,499 84 km
2000 ROCKY HULL 9,927 97 km
2001 THIRTY MILE 9,120 99 km
1994 UNNAMED 8,385 74 km
2015 NEWBY LAKE 5,794 80 km
2015 9 MILE 5,052 85 km
2023 CRATER CREEK 4,837 80 km
2002 QUARTZ MT. COMPLEX (QUARTZ MOUNTAIN) 4,716 96 km
2007 LITTLE CHOPAKA 4,406 80 km
1994 UNNAMED 3,324 80 km
2003 UNNAMED 1,697 85 km
1985 GOLD HILL 1,524 96 km
2006 VAN PEAK 1,425 94 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 25°F (-4°C) 1.4 in Coldest
February 30°F (-1°C) 0.9 in
March 37°F (3°C) 0.9 in Driest
April 45°F (7°C) 0.9 in
May 53°F (11°C) 1.4 in
June 59°F (15°C) 1.7 in Wettest
July 65°F (18°C) 1.4 in
August 65°F (18°C) 1.2 in Warmest
September 56°F (13°C) 1.0 in
October 45°F (7°C) 0.9 in
November 34°F (1°C) 1.5 in
December 27°F (-3°C) 1.6 in

Okanagan-Similkameen F has a seasonal temperature swing of 40°F / from 25°F in January to 65°F in August. Total annual precipitation is 14.9 inches, with June being the wettest month (1.7") and March the driest (0.9").

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