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Weather & Climate in Harrington, WA

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

Harrington experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 29°F in January while summers reach 67°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 12.6 inches (drier than the 38-inch national average). The area receives 23.5 inches of snow annually, a moderate snowfall amount. 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 2,144 feet.

Temperature

29°F Jan (-2°C) 67°F Jul (20°C)
Annual Average47.2°F
13% below US avg
January Average29°F (-2°C)
July Average67°F (20°C)
Sunny Days273 days/yr

Geography

Elevation2,144 ft (653 m)
Area0.2 sq mi (0.4 km²)
Population Density1,144/sq mi
Coordinates47.4802°N, 118.2553°W
TimezoneAmerica/Los_Angeles
CountyLincoln County County
Nearest AirportSpokane International (GEG)
35 miles away

Precipitation & Snow

Annual Rainfall 12.6"
67% below US avg
Snowfall 23.5"
Wettest Month (Dec) 1.85"
Driest Month (Aug) 0.47"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score54.9 / 100
Social Vulnerability78.2 / 100
Community Resilience59.8 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Relatively Low
Wildfire Relatively Moderate
Flood Relatively Low
Hail Relatively Low
Strong Wind Relatively Low
Heat Wave Relatively Low
Winter Weather Very Low
Lightning Very Low
Ice Storm Relatively Low
Drought Very Low
Cold Wave Relatively Moderate
Landslide Relatively Moderate
Volcano Very Low
Avalanche Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

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

Sep 1, 2015 15 km N of Nespelem Community, Washington M4.2 108 km 9 km
Nov 11, 2001 3 km NE of Spokane, Washington M4.0 68 km 4 km
Jun 25, 2001 Washington M3.9 68 km 10 km
Apr 15, 1991 4 km SE of Pateros, Washington M3.9 135 km 11 km
Jun 28, 1998 3 km SE of Genesee, Idaho M3.8 147 km 10 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 141 km 2 km
Jul 4, 1997 8 km NNE of Waterville, Washington M3.7 136 km 7 km
Jan 20, 2000 21 km ENE of Athol, Idaho M3.5 148 km 5 km
Jun 25, 2001 2 km SSE of Town and Country, Washington M3.4 68 km 10 km
Oct 15, 2011 13 km N of Richland, Washington M3.4 142 km 1 km
Jan 24, 1992 4 km WNW of Waterville, Washington M3.4 142 km 6 km
Jun 17, 2004 11 km SSE of Washtucna, Washington M3.4 90 km 17 km
Jan 13, 1994 11 km SW of Lind, Washington M3.4 74 km 0 km
Sep 13, 2012 10 km ESE of Rock Island, Washington M3.4 134 km 9 km
Jul 24, 2017 Washington M3.3 135 km 2 km
May 1, 2011 13 km N of Richland, Washington M3.3 142 km 2 km
Jun 19, 1990 11 km W of Othello, Washington M3.3 108 km 2 km
May 27, 1997 15 km W of Othello, Washington M3.3 111 km 2 km
Nov 12, 2001 3 km NNE of Spokane, Washington M3.3 68 km 0 km
Jan 14, 2004 2 km S of Manson, Washington M3.3 149 km 1 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

44 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 injury.

Date Rating Distance Path Fatalities
Apr 5, 1972 EF3 36 km 0.1 mi 0
Apr 5, 1972 EF2 68 km 0.1 mi 0
Aug 30, 1971 EF2 93 km 0.5 mi 0
May 6, 1957 EF2 79 km 1.5 mi 0
Jun 15, 1954 EF2 66 km 0.5 mi 0
May 6, 2009 EF1 34 km 3.4 mi 0
Jul 21, 1997 EF1 94 km 5.0 mi 0
Jul 21, 1997 EF1 94 km 5.0 mi 0
May 31, 1997 EF1 69 km 5.0 mi 0
May 31, 1997 EF1 37 km 12.0 mi 0
Aug 10, 1985 EF1 81 km 1.0 mi 0
Apr 12, 1984 EF1 81 km 1.0 mi 0
Oct 17, 1983 EF1 53 km 0.5 mi 0
Jun 22, 1981 EF1 80 km 0.1 mi 0
Aug 15, 1978 EF1 57 km 0.1 mi 0
Jul 1, 1978 EF1 94 km 2.3 mi 0
Jun 29, 1970 EF1 55 km 0.1 mi 0
Apr 18, 2024 EF0 56 km 0.0 mi 0
Mar 26, 2024 EF0 19 km 0.0 mi 0
Jul 10, 2023 EF0 48 km 0.9 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 — 121 km
1949 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 39 km
2024 COLUMBIA RIVER VALLEY, WA Meteorological 14.3 m — 122 km
1944 COLUMBIA RIVER VALLEY, WA Meteorological 9.1 m — 121 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 9.0 m — 40 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological 4.8 m — 121 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 3.6 m — 47 km
1953 COLUMBIA RIVER VALLEY, WA Meteorological — — 121 km
1952 COLUMBIA RIVER VALLEY, WA Meteorological — — 121 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 28 km
2012 BARKER CANYON COMPLEX 85,906 93 km
2018 GRASS VALLEY 76,074 85 km
2015 CARPENTER RD. 62,488 65 km
2021 SUMMIT TRAIL 54,855 100 km
2019 WILLIAMS FLATS 44,680 58 km
2021 CHUWEAH CREEK FIRE 37,393 88 km
2014 DEVILS ELBOW COMPLEX 25,988 93 km
2012 APACHE PASS 25,101 25 km
1996 LINCOLN 19,376 35 km
2008 SWANSON LAKE 18,941 28 km
2016 BLACK ROCK ROAD 17,398 56 km
2010 UNNAMED 16,737 99 km
2007 MANILA CREEK 16,248 74 km
2021 FORD CORKSCREW 16,179 64 km
1987 COULEE CITY 12,787 76 km
2008 SMITH LAKE FIRE 12,542 82 km
1991 UNNAMED 12,401 51 km
2020 KEWA FIELD 11,811 78 km
2012 BUFFALO LAKE ROAD 11,260 75 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 29°F (-2°C) 1.5 in
February 32°F (0°C) 1.2 in
March 40°F (4°C) 1.3 in
April 46°F (8°C) 0.9 in
May 54°F (12°C) 1.1 in
June 61°F (16°C) 0.9 in
July 67°F (20°C) 0.6 in
August 68°F (20°C) 0.5 in Warmest, Driest
September 59°F (15°C) 0.6 in
October 48°F (9°C) 0.9 in
November 36°F (2°C) 1.7 in
December 27°F (-3°C) 1.9 in Coldest, Wettest

Harrington has a seasonal temperature swing of 41°F / from 27°F in December to 68°F in August. Total annual precipitation is 13.1 inches, with December being the wettest month (1.9") and August the driest (0.5").

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