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Weather & Climate in Addy, WA

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

Addy experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 27°F in January while summers reach 68°F in July. The area gets 269 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 21.4 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 1,642 feet.

Temperature

27°F Jan (-3°C) 68°F Jul (20°C)
Annual Average46.3°F
14% below US avg
January Average27°F (-3°C)
July Average68°F (20°C)
Sunny Days269 days/yr

Geography

Elevation1,642 ft (500 m)
Area0.1 sq mi (0.4 km²)
Population Density349/sq mi
Coordinates48.3589°N, 117.8372°W
TimezoneAmerica/Los_Angeles
CountyStevens County County
Nearest AirportSpokane International (GEG)
53 miles away

Precipitation & Snow

Annual Rainfall 21.4"
44% below US avg
Wettest Month (Dec) 2.60"
Driest Month (Jul) 1.02"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score60.3 / 100
Social Vulnerability58.7 / 100
Community Resilience38.0 / 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 Relatively Moderate
Lightning Very Low
Ice Storm Relatively Low
Drought Very Low
Cold Wave Relatively Moderate
Landslide Relatively Moderate
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

86 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 88 km 9 km
Nov 11, 2001 3 km NE of Spokane, Washington M4.0 81 km 4 km
Apr 24, 2015 8 km WSW of Hope, Idaho M3.9 107 km 17 km
Sep 10, 2016 23 km E of Oliver, Canada M3.9 139 km 1 km
Jun 25, 2001 Washington M3.9 82 km 10 km
Mar 3, 1998 16 km NNE of Grand Forks, Canada M3.8 98 km 5 km
Apr 24, 2015 12 km SSW of East Hope, Idaho M3.7 112 km 9 km
Jan 20, 2000 21 km ENE of Athol, Idaho M3.5 110 km 5 km
Dec 15, 2012 19 km S of Troy, Montana M3.4 146 km 1 km
Jun 25, 2001 2 km SSE of Town and Country, Washington M3.4 80 km 10 km
Sep 22, 2003 12 km NW of Rathdrum, Idaho M3.3 80 km 13 km
Aug 20, 1990 23 km NW of Nelson, Canada M3.3 143 km -1 km
Nov 12, 2001 3 km NNE of Spokane, Washington M3.3 81 km 0 km
Oct 27, 1991 21 km N of Castlegar, Canada M3.3 129 km 7 km
Apr 24, 2015 7 km SW of Hope, Idaho M3.3 110 km 10 km
Apr 20, 2025 8 km NW of Tonasket, Washington M3.2 132 km 15 km
Feb 15, 2020 37 km ESE of Nelson, Canada M3.2 137 km 10 km
Jul 31, 2001 2 km WNW of Town and Country, Washington M3.2 75 km 0 km
Apr 13, 2025 7 km NW of Tonasket, Washington M3.2 130 km 15 km
Mar 16, 2000 1 km WSW of Coulee City, Washington M3.2 138 km 1 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

35 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 2 injuries.

Date Rating Distance Path Fatalities
Apr 5, 1972 EF3 85 km 0.1 mi 0
Apr 9, 1991 EF2 72 km 1.0 mi 0
Jul 17, 1978 EF2 56 km 0.1 mi 0
Apr 5, 1972 EF2 33 km 1.0 mi 0
May 6, 2009 EF1 69 km 3.4 mi 0
Jul 21, 1997 EF1 87 km 5.0 mi 0
Jul 21, 1997 EF1 87 km 5.0 mi 0
Jul 21, 1997 EF1 31 km 1.0 mi 0
Jul 21, 1997 EF1 31 km 1.0 mi 0
May 31, 1997 EF1 61 km 5.0 mi 0
May 29, 1994 EF1 81 km 0.1 mi 0
Apr 12, 1984 EF1 84 km 1.0 mi 0
Oct 17, 1983 EF1 100 km 0.5 mi 0
Jul 25, 1983 EF1 21 km 0.2 mi 0
Jun 22, 1981 EF1 54 km 0.1 mi 0
Aug 14, 1980 EF1 13 km 0.1 mi 0
Aug 19, 1978 EF1 94 km 1.9 mi 0
Jun 29, 1970 EF1 63 km 0.1 mi 0
Apr 18, 2024 EF0 81 km 0.0 mi 0
Mar 26, 2024 EF0 84 km 0.0 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 — 33 km
1949 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 71 km
2024 COLUMBIA RIVER VALLEY, WA Meteorological 14.3 m — 33 km
1944 COLUMBIA RIVER VALLEY, WA Meteorological 9.1 m — 33 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 9.0 m — 63 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological 4.8 m — 33 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 3.6 m — 57 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological — — 33 km
1952 COLUMBIA RIVER VALLEY, WA Meteorological — — 33 km
Source: NOAA/NCEI Historical Tsunami Database.

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: NORTH STAR (218,547 acres, 2015).

Year Name Acres Burned Distance
2015 NORTH STAR 218,547 82 km
2020 WHITNEY 127,930 99 km
2015 CARPENTER RD. 62,488 39 km
2021 SUMMIT TRAIL 54,855 44 km
2015 STICKPIN 54,119 68 km
2019 WILLIAMS FLATS 44,680 65 km
2021 CHUWEAH CREEK FIRE 37,393 80 km
2014 DEVILS ELBOW COMPLEX 25,988 64 km
2015 TOWER 24,779 54 km
1988 WHITE MOUNTAIN 21,855 54 km
2008 SWANSON LAKE 18,941 83 km
2007 MANILA CREEK 16,248 78 km
2021 FORD CORKSCREW 16,179 48 km
2015 RENNER 13,975 52 km
2008 SMITH LAKE FIRE 12,542 96 km
1991 UNNAMED 12,401 63 km
2020 KEWA FIELD 11,811 41 km
2012 BUFFALO LAKE ROAD 11,260 89 km
2023 OREGON 10,957 62 km
2003 RATTLESNAKE CANYON 10,655 68 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 27°F (-3°C) 2.1 in
February 30°F (-1°C) 1.6 in
March 38°F (3°C) 1.7 in
April 45°F (7°C) 1.5 in
May 53°F (12°C) 1.9 in
June 60°F (15°C) 1.7 in
July 68°F (20°C) 1.0 in Warmest, Driest
August 66°F (19°C) 1.1 in
September 57°F (14°C) 1.0 in
October 46°F (8°C) 1.1 in
November 34°F (1°C) 2.4 in
December 26°F (-3°C) 2.6 in Coldest, Wettest

Addy has a seasonal temperature swing of 42°F / from 26°F in December to 68°F in July. Total annual precipitation is 19.7 inches, with December being the wettest month (2.6") and July the driest (1.0").

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