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Weather & Climate in Wapato, WA

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

Wapato experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 32°F in January while summers reach 75°F in July. The area gets 279 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 7.8 inches (drier than the 38-inch national average). The area receives 20.4 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 852 feet.

Temperature

32°F Jan (-0°C) 75°F Jul (24°C)
Annual Average52.3°F
3% below US avg
January Average32°F (-0°C)
July Average75°F (24°C)
Sunny Days279 days/yr

Geography

Elevation852 ft (260 m)
Area0.5 sq mi (1.2 km²)
Population Density3,946/sq mi
Coordinates46.4436°N, 120.4215°W
TimezoneAmerica/Los_Angeles
CountyYakima County County
Nearest AirportTri-Cities (PSC)
63 miles away

Precipitation & Snow

Annual Rainfall 7.8"
79% below US avg
Snowfall 20.4"
Wettest Month (Dec) 1.30"
Driest Month (Jul) 0.16"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score94.0 / 100
Social Vulnerability63.9 / 100
Community Resilience13.5 / 100

Hazard Breakdown

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

Earthquake History

1,105 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.

Jun 18, 1994 11 km SE of Skykomish, Washington M4.3 146 km -1 km
Feb 14, 2011 31 km S of Morton, Washington M4.3 139 km 4 km
Feb 18, 2015 15 km ENE of Cle Elum, Washington M4.2 93 km 4 km
Jun 17, 2010 30 km S of White Swan, Washington M4.2 45 km 3 km
May 20, 1995 15 km NNE of Ashford, Washington M4.1 126 km 12 km
Jan 30, 2000 6 km SE of Condon, Oregon M4.1 141 km -1 km
Aug 16, 2004 16 km ENE of Packwood, Washington M4.0 84 km -1 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 35 km 2 km
Oct 1, 2004 37 km NNE of Amboy, Washington M3.9 139 km -1 km
Jun 25, 2004 17 km W of Packwood, Washington M3.9 115 km -1 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 34 km 15 km
Mar 22, 1997 10 km ESE of Condon, Oregon M3.9 141 km 0 km
Aug 7, 1992 8 km WSW of Irrigon, Oregon M3.9 91 km 0 km
Sep 10, 1994 2 km SE of Enumclaw, Washington M3.9 144 km 17 km
Jan 3, 2018 37 km SSE of Morton, Washington M3.9 127 km 10 km
Mar 29, 2010 10 km NE of Cliffdell, Washington M3.8 75 km 1 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 74 km 20 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 89 km 2 km
Oct 1, 2004 36 km NNE of Amboy, Washington M3.7 139 km -2 km
Jan 1, 1997 14 km NNE of Selah, Washington M3.7 37 km 18 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
Apr 30, 1957 EF2 18 km 1.0 mi 0
May 19, 2006 EF1 89 km 0.1 mi 0
May 1, 2024 EF0 75 km 0.4 mi 0
Mar 31, 2020 EF0 89 km 0.1 mi 0
May 22, 2016 EF0 100 km 0.2 mi 0
Aug 13, 2014 EF0 50 km 0.3 mi 0
Apr 7, 2008 EF0 17 km 0.1 mi 0
May 9, 2005 EF0 20 km 0.2 mi 0
Apr 23, 2005 EF0 20 km 0.1 mi 0
Apr 23, 2005 EF0 13 km 0.1 mi 0
Jun 7, 2004 EF0 69 km 0.5 mi 0
May 15, 2000 EF0 13 km 0.2 mi 0
May 9, 1999 EF0 29 km — 0
Aug 26, 1997 EF0 24 km 1.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 250.0 m (820 ft).

Year Location Cause Max Wave Deaths Distance
1980 WASHINGTON Explosion 250.0 m 61 138 km
Source: NOAA/NCEI Historical Tsunami Database.

Nearby Volcanoes

7 volcanoes within 200 km. Closest: Adams (86 km).

Name Type Elevation Last Eruption Distance
Adams Stratovolcano 3,742 m (12,277 ft) 950 86 km
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 112 km
Indian Heaven Shield(s) 1,806 m (5,925 ft) -6250 122 km
St. Helens Stratovolcano 2,549 m (8,363 ft) 2008 138 km
West Crater Volcanic field 1,329 m (4,360 ft) -5750 142 km
Hood Stratovolcano 3,426 m (11,240 ft) 1866 154 km
Glacier Peak Stratovolcano 3,213 m (10,541 ft) 1700 193 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: RANGE 12 (167,604 acres, 2016).

Year Name Acres Burned Distance
2016 RANGE 12 167,604 43 km
2000 24 COMMAND 162,300 64 km
1984 HANFORD 122,914 65 km
2021 SCHNEIDER SPRINGS 114,743 68 km
2000 MULE DRY 90,184 58 km
2013 COLOCKUM TARPS 79,279 85 km
2007 WAUTOMA 77,956 56 km
2020 EVANS CANYON 76,288 46 km
1996 COLD CREEK 72,859 39 km
2018 BOYLSTON 66,292 51 km
2012 TABLE MOUNTAIN COMPLEX 65,887 94 km
2023 NEWELL ROAD 61,833 66 km
2015 COUGAR CREEK 51,866 79 km
2024 BIG HORN 51,023 69 km
2017 NORSE PEAK 51,017 97 km
2009 DRY CREEK COMPLEX 49,843 36 km
2024 RETREAT 44,681 49 km
2019 COLD CREEK 43,756 59 km
2015 HIGHWAY 8 35,296 74 km
2003 UMTANUM RIDGE 34,351 39 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (-0°C) 1.1 in
February 37°F (3°C) 0.8 in
March 45°F (7°C) 0.6 in
April 52°F (11°C) 0.5 in
May 59°F (15°C) 0.4 in
June 66°F (19°C) 0.4 in
July 75°F (24°C) 0.2 in Warmest, Driest
August 71°F (22°C) 0.4 in
September 63°F (17°C) 0.4 in
October 52°F (11°C) 0.5 in
November 40°F (4°C) 1.1 in
December 31°F (-0°C) 1.3 in Coldest, Wettest

Wapato has a seasonal temperature swing of 44°F / from 31°F in December to 75°F in July. Total annual precipitation is 7.6 inches, with December being the wettest month (1.3") and July the driest (0.2").

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