Weather & Climate in Millwood, WA

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

Millwood experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 32°F in January while summers reach 72°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 17.4 inches (drier than the 38-inch national average). 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 1,949 feet.

Temperature

32°F Jan (-0°C) 72°F Jul (22°C)

Annual Average	49.8°F
	8% below US avg
January Average	32°F (-0°C)
July Average	72°F (22°C)
Sunny Days	273 days/yr

Geography

Elevation	1,949 ft (594 m)
Area	0.3 sq mi (0.7 km²)
Population Density	2,686/sq mi
Coordinates	47.6856°N, 117.2801°W
Timezone	America/Los_Angeles
County	Spokane County County
Nearest Airport	Spokane International (GEG) 13 miles away

Precipitation & Snow

Annual Rainfall 17.4"

54% below US avg

Wettest Month (Dec) 2.91"

Driest Month (Jul) 0.91"

Air Quality

AQI Median	28.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	90.0 / 100
Social Vulnerability	21.0 / 100
Community Resilience	75.8 / 100

Hazard Breakdown

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

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

Earthquake History

93 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

Sep 1, 2015	15 km N of Nespelem Community, Washington	M4.2	147 km	9 km
Aug 17, 1994	1 km E of Mullan, Idaho	M4.1	115 km	2 km
Nov 11, 2001	3 km NE of Spokane, Washington	M4.0	9 km	4 km
Apr 24, 2015	8 km WSW of Hope, Idaho	M3.9	88 km	17 km
Jun 25, 2001	Washington	M3.9	9 km	10 km
Jun 28, 1998	3 km SE of Genesee, Idaho	M3.8	131 km	10 km
Apr 24, 2015	12 km SSW of East Hope, Idaho	M3.7	85 km	9 km
Mar 14, 1997	1 km E of Mullan, Idaho	M3.6	115 km	2 km
May 30, 1996	3 km SSW of Mullan, Idaho	M3.6	113 km	1 km
Jan 20, 2000	21 km ENE of Athol, Idaho	M3.5	72 km	5 km
Nov 2, 1996	4 km W of Trout Creek, Montana	M3.4	123 km	5 km
Jun 17, 2004	11 km SSE of Washtucna, Washington	M3.4	134 km	17 km
Jan 13, 1994	11 km SW of Lind, Washington	M3.4	139 km	0 km
Jun 25, 2001	2 km SSE of Town and Country, Washington	M3.4	10 km	10 km
Mar 8, 1994	32 km S of Wallace, Idaho	M3.4	116 km	5 km
Dec 15, 2012	19 km S of Troy, Montana	M3.4	125 km	1 km
Jun 28, 1997	3 km NNW of Mullan, Idaho	M3.4	112 km	2 km
Feb 11, 2025	2 km NNW of Mullan, Idaho	M3.3	113 km	5 km
May 10, 2000	Idaho-Montana border region	M3.3	115 km	2 km
Sep 22, 2003	12 km NW of Rathdrum, Idaho	M3.3	31 km	13 km

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

Tornado History

36 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 5 injuries.

Date	Rating	Distance	Path	Fatalities
Apr 5, 1972	EF3	93 km	0.1 mi	0
May 31, 1997	EF2	56 km	5.0 mi	0
Apr 9, 1991	EF2	62 km	1.0 mi	0
Jul 17, 1978	EF2	56 km	0.1 mi	0
Aug 30, 1971	EF2	85 km	0.5 mi	0
May 6, 1957	EF2	24 km	1.5 mi	0
Jun 15, 1954	EF2	29 km	0.5 mi	0
May 6, 2009	EF1	65 km	3.4 mi	0
May 31, 1997	EF1	26 km	5.0 mi	0
Apr 12, 1984	EF1	5 km	1.0 mi	0
Oct 17, 1983	EF1	31 km	0.5 mi	0
Jun 22, 1981	EF1	32 km	0.1 mi	0
Aug 14, 1980	EF1	98 km	0.1 mi	0
Aug 19, 1978	EF1	84 km	1.9 mi	0
Jun 29, 1970	EF1	34 km	0.1 mi	0
Apr 18, 2024	EF0	21 km	0.0 mi	0
Mar 26, 2024	EF0	72 km	0.0 mi	0
May 6, 2022	EF0	19 km	0.6 mi	0
May 6, 2022	EF0	7 km	2.1 mi	0
Aug 9, 2016	EF0	26 km	0.2 mi	0

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

Tsunami History

9 tsunamis recorded within 500 km. Highest wave on record: 19.8 m (65 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1952	COLUMBIA RIVER VALLEY, WA	Meteorological	19.8 m	-	118 km
1949	COLUMBIA RIVER VALLEY, WA	Meteorological	19.8 m	-	82 km
2024	COLUMBIA RIVER VALLEY, WA	Meteorological	14.3 m	-	118 km
1944	COLUMBIA RIVER VALLEY, WA	Meteorological	9.1 m	-	118 km
2009	COLUMBIA RIVER VALLEY, WA	Meteorological	9.0 m	-	58 km
1953	COLUMBIA RIVER VALLEY, WA	Meteorological	4.8 m	-	118 km
2009	COLUMBIA RIVER VALLEY, WA	Meteorological	3.6 m	-	70 km
1953	COLUMBIA RIVER VALLEY, WA	Meteorological	-	-	118 km
1952	COLUMBIA RIVER VALLEY, WA	Meteorological	-	-	118 km

Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: WHITNEY (127,930 acres, 2020).

Year	Name	Acres Burned	Distance
2020	WHITNEY	127,930	97 km
2015	CARPENTER RD.	62,488	73 km
2019	WILLIAMS FLATS	44,680	97 km
2012	APACHE PASS	25,101	98 km
2015	TOWER	24,779	89 km
2008	SWANSON LAKE	18,941	84 km
2021	FORD CORKSCREW	16,179	43 km
2021	DECEITFUL	12,750	99 km
1991	UNNAMED	12,401	38 km
2020	KEWA FIELD	11,811	95 km
2023	OREGON	10,957	35 km
2003	RATTLESNAKE CANYON	10,655	86 km
2023	GRAY	10,096	34 km
2016	CAYUSE MTN	9,744	59 km
2014	WATERMELON HILL	9,321	54 km
2015	LOWER FLAT	9,034	87 km
2022	WAGNER ROAD	8,155	82 km
2003	HATTEN ROAD	7,247	95 km
2016	SPOKANE COMPLEX	6,839	22 km
1991	UNNAMED	6,024	82 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (-0°C)	2.6 in
February	33°F (0°C)	2.0 in
March	39°F (4°C)	1.8 in
April	47°F (8°C)	1.5 in
May	54°F (12°C)	1.9 in
June	61°F (16°C)	1.5 in
July	72°F (22°C)	0.9 in	Warmest, Driest
August	68°F (20°C)	0.9 in
September	58°F (15°C)	1.0 in
October	47°F (8°C)	1.3 in
November	36°F (2°C)	2.8 in
December	29°F (-2°C)	2.9 in	Coldest, Wettest

Millwood has a seasonal temperature swing of 43°F / from 29°F in December to 72°F in July. Total annual precipitation is 21.2 inches, with December being the wettest month (2.9") and July the driest (0.9").

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