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Weather & Climate in Arlington, OR

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

Arlington experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 35°F in January while summers reach 76°F in July. The area gets 293 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 9.3 inches (drier than the 38-inch national average). The area receives 5.3 inches of snow annually. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 728 feet.

Temperature

35°F Jan (2°C) 76°F Jul (25°C)
Annual Average54.4°F
1% above US avg
January Average35°F (2°C)
July Average76°F (25°C)
Sunny Days293 days/yr

Geography

Elevation728 ft (222 m)
Area2.4 sq mi (6.2 km²)
Population Density340/sq mi
Coordinates45.7253°N, 120.1890°W
TimezoneAmerica/Los_Angeles
CountyGilliam County County
Nearest AirportColumbia Gorge Regional/The Dalles Municipal (DLS)
48 miles away

Precipitation & Snow

Annual Rainfall 9.3"
76% below US avg
Snowfall 5.3"
Wettest Month (Dec) 1.61"
Driest Month (Jul) 0.20"

Air Quality

AQI Median32.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score2.7 / 100
Social Vulnerability66.0 / 100
Community Resilience32.5 / 100

Hazard Breakdown

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

Earthquake History

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

Jun 29, 2002 6 km ENE of Government Camp, Oregon M4.5 125 km 5 km
Nov 28, 1991 7 km S of Walla Walla East, Washington M4.3 148 km 9 km
Jun 17, 2010 30 km S of White Swan, Washington M4.2 61 km 3 km
Jul 14, 2008 11 km ESE of Maupin, Oregon M4.2 89 km 16 km
Jul 14, 1992 6 km S of Walla Walla East, Washington M4.1 149 km 11 km
Jan 30, 2000 6 km SE of Condon, Oregon M4.1 59 km -1 km
Aug 16, 2004 16 km ENE of Packwood, Washington M4.0 145 km -1 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 67 km 2 km
Jun 6, 2021 6 km NE of Government Camp, Oregon M3.9 125 km 4 km
Aug 7, 1992 8 km WSW of Irrigon, Oregon M3.9 49 km 0 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 51 km 15 km
Mar 22, 1997 10 km ESE of Condon, Oregon M3.9 60 km 0 km
Jun 29, 2002 7 km NE of Government Camp, Oregon M3.8 124 km 5 km
Jun 14, 2007 12 km ESE of Maupin, Oregon M3.8 89 km 18 km
Jan 1, 1997 14 km NNE of Selah, Washington M3.7 119 km 18 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 70 km 20 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 105 km 2 km
Apr 5, 2008 12 km ESE of Maupin, Oregon M3.6 89 km 18 km
Feb 1, 2000 7 km SE of Condon, Oregon M3.6 60 km -1 km
Apr 20, 2009 10 km ESE of Maupin, Oregon M3.6 89 km 15 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

15 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF1.

Date Rating Distance Path Fatalities
May 19, 2006 EF1 41 km 0.1 mi 0
Mar 31, 2020 EF0 97 km 0.1 mi 0
May 22, 2016 EF0 95 km 0.2 mi 0
Aug 13, 2014 EF0 73 km 0.3 mi 0
Apr 14, 2011 EF0 50 km 0.2 mi 0
Apr 7, 2008 EF0 97 km 0.1 mi 0
Apr 23, 2005 EF0 62 km 0.1 mi 0
Apr 23, 2005 EF0 70 km 0.1 mi 0
Jun 7, 2004 EF0 48 km 0.5 mi 0
May 23, 2004 EF0 71 km 0.1 mi 0
May 15, 2000 EF0 81 km 0.2 mi 0
Aug 26, 1997 EF0 84 km 1.0 mi 0
Jul 9, 1995 EF0 74 km 0.1 mi 0
Apr 12, 1957 EF0 29 km 16.2 mi 0
May 9, 1956 EF0 87 km 10.2 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

7 volcanoes within 200 km. Closest: Adams (114 km).

Name Type Elevation Last Eruption Distance
Adams Stratovolcano 3,742 m (12,277 ft) 950 114 km
Hood Stratovolcano 3,426 m (11,240 ft) 1866 124 km
Indian Heaven Shield(s) 1,806 m (5,925 ft) -6250 128 km
West Crater Volcanic field 1,329 m (4,360 ft) -5750 148 km
St. Helens Stratovolcano 2,549 m (8,363 ft) 2008 163 km
Jefferson Stratovolcano 3,199 m (10,495 ft) 950 172 km
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 174 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 89 km
2000 24 COMMAND 162,300 92 km
1984 HANFORD 122,914 92 km
2000 MULE DRY 90,184 27 km
2007 WAUTOMA 77,956 92 km
2011 HANCOCK COMPLEX 71,495 83 km
2018 SUBSTATION 0730 RN 69,109 64 km
2023 NEWELL ROAD 61,833 18 km
2024 BIG HORN 51,023 18 km
2009 DRY CREEK COMPLEX 49,843 85 km
2018 STUBBLEFIELD 1008 RN 49,160 58 km
2008 COAL PLANT 45,801 37 km
2019 COLD CREEK 43,756 93 km
2014 BLACK ROCK 40,760 85 km
2015 HIGHWAY 8 35,296 9 km
2018 LONG HOLLOW 0806 RN 33,662 75 km
2016 0353 RN SCOTT CANYON 32,051 33 km
2017 SILVER DOLLAR 30,789 99 km
2002 WHITE RIVER 28,930 82 km
2007 HORSE HEAVEN COMPLEX (SIX PRONG) 28,225 17 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 35°F (2°C) 1.4 in
February 38°F (3°C) 1.0 in
March 45°F (7°C) 0.8 in
April 51°F (10°C) 0.7 in
May 59°F (15°C) 0.6 in
June 66°F (19°C) 0.5 in
July 76°F (25°C) 0.2 in Warmest, Driest
August 73°F (23°C) 0.4 in
September 64°F (18°C) 0.4 in
October 53°F (12°C) 0.6 in
November 41°F (5°C) 1.5 in
December 34°F (1°C) 1.6 in Coldest, Wettest

Arlington has a seasonal temperature swing of 42°F / from 34°F in December to 76°F in July. Total annual precipitation is 9.8 inches, with December being the wettest month (1.6") and July the driest (0.2").

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