Weather & Climate in Clarkston, WA

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

Clarkston experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 36°F in January while summers reach 76°F in July. The area gets 273 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 12.9 inches (drier than the 38-inch national average). The area receives 12.7 inches of snow annually. Air quality is rated Good with a median AQI of 28 / among the cleanest air in the country. The city sits at an elevation of 815 feet.

Temperature

36°F Jan (2°C) 76°F Jul (24°C)

Annual Average	53.8°F
	0% below US avg
January Average	36°F (2°C)
July Average	76°F (24°C)
Sunny Days	273 days/yr

Geography

Elevation	815 ft (248 m)
Area	0.9 sq mi (2.2 km²)
Population Density	3,515/sq mi
Coordinates	46.4154°N, 117.0501°W
Timezone	America/Los_Angeles
County	Asotin County County
Nearest Airport	Pullman/Moscow Regional (PUW) 23 miles away

Precipitation & Snow

Annual Rainfall 12.9"

66% below US avg

Snowfall 12.7"

Wettest Month (Nov) 1.77"

Driest Month (Jul) 0.83"

Air Quality

AQI Median	28.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	17.9 / 100
Social Vulnerability	66.4 / 100
Community Resilience	20.0 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Relatively Moderate
Flood	Relatively Low
Hail	Very Low
Strong Wind	Very Low
Heat Wave	Relatively Low
Winter Weather	Very Low
Lightning	Very Low
Ice Storm	Very Low
Drought	Very Low
Cold Wave	Very Low
Landslide	Relatively Low
Avalanche	Relatively Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

91 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.

Nov 28, 1991	7 km S of Walla Walla East, Washington	M4.3	108 km	9 km
Jul 14, 1992	6 km S of Walla Walla East, Washington	M4.1	108 km	11 km
Nov 11, 2001	3 km NE of Spokane, Washington	M4.0	144 km	4 km
Jun 25, 2001	Washington	M3.9	143 km	10 km
Nov 8, 1997	39 km SE of Pierce, Idaho	M3.8	127 km	5 km
Jun 28, 1998	3 km SE of Genesee, Idaho	M3.8	18 km	10 km
May 30, 1996	3 km SSW of Mullan, Idaho	M3.6	147 km	1 km
Jan 23, 2015	3 km N of Cayuse, Oregon	M3.5	140 km	20 km
Jan 13, 1994	11 km SW of Lind, Washington	M3.4	136 km	0 km
Jun 25, 2001	2 km SSE of Town and Country, Washington	M3.4	146 km	10 km
Jun 17, 2004	11 km SSE of Washtucna, Washington	M3.4	95 km	17 km
Mar 8, 1994	32 km S of Wallace, Idaho	M3.4	121 km	5 km
Nov 12, 2001	3 km NNE of Spokane, Washington	M3.3	144 km	0 km
Dec 15, 1991	6 km SSW of Walla Walla East, Washington	M3.3	109 km	8 km
Feb 10, 2013	29 km ESE of Pierce, Idaho	M3.2	122 km	5 km
Feb 9, 1996	2 km W of Mullan, Idaho	M3.2	149 km	1 km
Jul 31, 2001	2 km WNW of Town and Country, Washington	M3.2	150 km	0 km
Apr 10, 2012	3 km WNW of Touchet, Washington	M3.2	134 km	14 km
Mar 12, 1999	17 km NW of Malden, Washington	M3.1	112 km	5 km
Mar 18, 1993	3 km SSW of Osburn, Idaho	M3.1	141 km	10 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

17 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.

Date	Rating	Distance	Path	Fatalities
Aug 30, 1971	EF2	61 km	0.5 mi	0
Jun 11, 1968	EF2	69 km	9.6 mi	0
Mar 14, 1966	EF2	58 km	1.0 mi	0
May 8, 1962	EF2	19 km	9.1 mi	0
Jan 16, 2000	EF1	74 km	1.0 mi	0
May 19, 1986	EF1	44 km	2.0 mi	0
May 2, 1973	EF1	35 km	0.1 mi	0
Jun 20, 1969	EF1	21 km	1.0 mi	0
Oct 7, 2010	EF0	58 km	1.0 mi	0
Oct 7, 2010	EF0	59 km	0.4 mi	0
Jun 29, 2007	EF0	85 km	0.3 mi	0
May 31, 1997	EF0	6 km	0.1 mi	0
Jun 1, 1991	EF0	17 km	0.1 mi	0
May 1, 1991	EF0	18 km	0.1 mi	0
Sep 14, 1986	EF0	74 km	0.2 mi	0
Aug 9, 1982	EF0	99 km	0.1 mi	0
Apr 11, 1979	EF0	90 km	1.0 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: MALONEY CREEK (131,397 acres, 2000).

Year	Name	Acres Burned	Distance
2000	MALONEY CREEK	131,397	56 km
2006	COLUMBIA COMPLEX	118,865	64 km
2021	SHOVEL CREEK	109,829	47 km
2021	LICK CREEK	80,376	36 km
2015	BUTTE CREEK	79,418	63 km
2012	CACHE CREEK	75,521	58 km
2014	BIG COUGAR	65,397	49 km
2007	POE CABIN	59,704	99 km
1988	TEEPEE BUTTE	59,565	63 km
2005	SCHOOL	51,701	46 km
2007	CHIMNEY COMPLEX	50,646	42 km
2015	KAMIAH GULCH	48,459	79 km
2017	POWERLINE	45,449	53 km
2021	GREEN RIDGE	44,604	54 km
1986	JOSEPH/STARVATION	37,064	66 km
2014	SOMERS	36,374	100 km
2000	EASTSIDE COMPLEX (DEEP CREEK)	31,969	81 km
2000	BURNT FLATS	24,808	98 km
2021	ELBOW CREEK	23,103	74 km
2005	TRYON COMPLEX (TRYON)	21,486	92 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	36°F (2°C)	1.7 in
February	38°F (3°C)	1.3 in
March	44°F (7°C)	1.5 in
April	50°F (10°C)	1.5 in
May	57°F (14°C)	1.7 in
June	65°F (18°C)	1.3 in
July	76°F (24°C)	0.8 in	Warmest, Driest
August	71°F (22°C)	0.8 in
September	62°F (16°C)	0.9 in
October	50°F (10°C)	1.2 in
November	40°F (5°C)	1.8 in	Wettest
December	33°F (1°C)	1.6 in	Coldest

Clarkston has a seasonal temperature swing of 42°F / from 33°F in December to 76°F in July. Total annual precipitation is 16.2 inches, with November being the wettest month (1.8") and July the driest (0.8").

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