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Weather & Climate in Granger, WA

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

Granger experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 31°F in January while summers reach 71°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 8.3 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 729 feet.

Temperature

31°F Jan (-1°C) 71°F Jul (22°C)
Annual Average50.2°F
7% below US avg
January Average31°F (-1°C)
July Average71°F (22°C)
Sunny Days279 days/yr

Geography

Elevation729 ft (222 m)
Area0.7 sq mi (1.7 km²)
Population Density2,114/sq mi
Coordinates46.3453°N, 120.1927°W
TimezoneAmerica/Los_Angeles
CountyYakima County County
Nearest AirportTri-Cities (PSC)
52 miles away

Precipitation & Snow

Annual Rainfall 8.3"
78% below US avg
Wettest Month (Dec) 1.14"
Driest Month (Jul) 0.20"

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

356 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 M4.3 150 km 9 km
Jun 17, 2010 30 km S of White Swan, Washington M4.2 50 km 3 km
Feb 18, 2015 15 km ENE of Cle Elum, Washington M4.2 109 km 4 km
Jul 14, 2008 11 km ESE of Maupin, Oregon M4.2 148 km 16 km
May 20, 1995 15 km NNE of Ashford, Washington M4.1 146 km 12 km
Jan 30, 2000 6 km SE of Condon, Oregon M4.1 128 km -1 km
Aug 16, 2004 16 km ENE of Packwood, Washington M4.0 105 km -1 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 43 km 2 km
Jun 25, 2004 17 km W of Packwood, Washington M3.9 134 km -1 km
Aug 7, 1992 8 km WSW of Irrigon, Oregon M3.9 71 km 0 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 31 km 15 km
Mar 22, 1997 10 km ESE of Condon, Oregon M3.9 128 km 0 km
Jan 3, 2018 37 km SSE of Morton, Washington M3.9 144 km 10 km
Mar 29, 2010 10 km NE of Cliffdell, Washington M3.8 94 km 1 km
Jun 14, 2007 12 km ESE of Maupin, Oregon M3.8 148 km 18 km
Jan 1, 1997 14 km NNE of Selah, Washington M3.7 52 km 18 km
Jul 13, 1995 13 km ENE of Ashford, Washington M3.7 139 km 7 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 72 km 2 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 53 km 20 km
Apr 6, 2025 12 km E of Greenwater, Washington M3.7 135 km 9 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
Apr 30, 1957 EF2 37 km 1.0 mi 0
May 19, 2006 EF1 70 km 0.1 mi 0
Apr 23, 1983 EF1 94 km 3.0 mi 0
May 1, 2024 EF0 81 km 0.4 mi 0
Mar 31, 2020 EF0 70 km 0.1 mi 0
May 22, 2016 EF0 80 km 0.2 mi 0
Aug 13, 2014 EF0 30 km 0.3 mi 0
Apr 7, 2008 EF0 37 km 0.1 mi 0
May 9, 2005 EF0 38 km 0.2 mi 0
Apr 23, 2005 EF0 11 km 0.1 mi 0
Apr 23, 2005 EF0 10 km 0.1 mi 0
Jun 7, 2004 EF0 49 km 0.5 mi 0
May 23, 2004 EF0 97 km 0.1 mi 0
May 15, 2000 EF0 12 km 0.2 mi 0
May 9, 1999 EF0 49 km — 0
Aug 26, 1997 EF0 41 km 1.0 mi 0
Jul 9, 1995 EF0 93 km 0.1 mi 0
Apr 12, 1957 EF0 97 km 16.2 mi 0
May 9, 1956 EF0 81 km 10.2 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

6 volcanoes within 200 km. Closest: Adams (101 km).

Name Type Elevation Last Eruption Distance
Adams Stratovolcano 3,742 m (12,277 ft) 950 101 km
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 132 km
Indian Heaven Shield(s) 1,806 m (5,925 ft) -6250 134 km
St. Helens Stratovolcano 2,549 m (8,363 ft) 2008 154 km
West Crater Volcanic field 1,329 m (4,360 ft) -5750 154 km
Hood Stratovolcano 3,426 m (11,240 ft) 1866 159 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 30 km
2000 24 COMMAND 162,300 48 km
1984 HANFORD 122,914 49 km
2021 SCHNEIDER SPRINGS 114,743 89 km
2000 MULE DRY 90,184 43 km
2013 COLOCKUM TARPS 79,279 93 km
2007 WAUTOMA 77,956 41 km
2020 EVANS CANYON 76,288 64 km
1996 COLD CREEK 72,859 39 km
2018 BOYLSTON 66,292 57 km
2023 NEWELL ROAD 61,833 56 km
2015 COUGAR CREEK 51,866 93 km
2024 BIG HORN 51,023 54 km
2009 DRY CREEK COMPLEX 49,843 23 km
2008 COAL PLANT 45,801 82 km
2024 RETREAT 44,681 70 km
2019 COLD CREEK 43,756 44 km
2015 HIGHWAY 8 35,296 60 km
2003 UMTANUM RIDGE 34,351 39 km
2017 SILVER DOLLAR 30,789 40 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 31°F (-1°C) 1.0 in Coldest
February 37°F (3°C) 0.7 in
March 45°F (7°C) 0.6 in
April 51°F (11°C) 0.5 in
May 59°F (15°C) 0.5 in
June 66°F (19°C) 0.4 in
July 71°F (22°C) 0.2 in Driest
August 71°F (22°C) 0.4 in Warmest
September 62°F (17°C) 0.4 in
October 52°F (11°C) 0.5 in
November 40°F (4°C) 1.0 in
December 31°F (-0°C) 1.1 in Wettest

Granger has a seasonal temperature swing of 40°F / from 31°F in January to 71°F in August. Total annual precipitation is 7.3 inches, with December being the wettest month (1.1") and July the driest (0.2").

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