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Weather & Climate in Island City, OR

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

Island City experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 32°F in January while summers reach 70°F in July. The area gets 311 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 17.4 inches (drier than the 38-inch national average). The area receives 9.4 inches of snow annually. Air quality is rated Good with a median AQI of 32. The city sits at an elevation of 2,738 feet.

Temperature

32°F Jan (-0°C) 70°F Jul (21°C)
Annual Average49.4°F
9% below US avg
January Average32°F (-0°C)
July Average70°F (21°C)
Sunny Days311 days/yr

Geography

Elevation2,738 ft (835 m)
Area0.4 sq mi (1.0 km²)
Population Density1,189/sq mi
Coordinates45.3358°N, 118.0492°W
TimezoneAmerica/Los_Angeles
CountyUmatilla County County
Nearest AirportEastern Oregon Regional At Pendleton (PDT)
44 miles away

Precipitation & Snow

Annual Rainfall 17.4"
54% below US avg
Snowfall 9.4"
Wettest Month (Dec) 3.03"
Driest Month (Jul) 0.67"

Air Quality

AQI Median32.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score82.3 / 100
Social Vulnerability59.6 / 100
Community Resilience15.9 / 100

Hazard Breakdown

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

Earthquake History

95 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 76 km 9 km
Jul 14, 1992 6 km S of Walla Walla East, Washington M4.1 76 km 11 km
Oct 27, 1994 11 km SE of Halfway, Oregon M4.0 101 km 10 km
Aug 7, 1992 8 km WSW of Irrigon, Oregon M3.9 133 km 0 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 149 km 20 km
Jan 23, 2015 3 km N of Cayuse, Oregon M3.5 57 km 20 km
Dec 24, 1999 18 km WNW of New Meadows, Idaho M3.5 127 km 3 km
Jun 17, 2004 11 km SSE of Washtucna, Washington M3.4 149 km 17 km
Jun 16, 1992 10 km ESE of Halfway, Oregon M3.3 100 km 5 km
Feb 28, 2004 10 km WSW of Wallula, Washington M3.3 108 km 1 km
Jul 20, 1998 9 km ESE of Halfway, Oregon M3.3 99 km 12 km
Aug 27, 2000 16 km W of Richland, Oregon M3.3 85 km 0 km
Dec 15, 1991 6 km SSW of Walla Walla East, Washington M3.3 76 km 8 km
Nov 23, 2001 6 km WNW of New Meadows, Idaho M3.2 138 km 0 km
Jul 25, 2009 10 km NW of Brogan, Oregon M3.2 119 km 7 km
Jan 26, 1992 28 km ENE of Halfway, Oregon M3.2 104 km 5 km
Jul 19, 1998 10 km ESE of Halfway, Oregon M3.2 100 km 11 km
Apr 10, 2012 3 km WNW of Touchet, Washington M3.2 94 km 14 km
Aug 14, 2017 19 km NNW of Halfway, Oregon M3.1 73 km 8 km
Jul 13, 2000 7 km NW of Unity, Oregon M3.1 97 km 19 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
Jun 11, 1968 EF2 78 km 9.6 mi 0
May 6, 2022 EF1 53 km 2.9 mi 0
May 6, 2009 EF1 56 km 1.6 mi 0
Mar 5, 2024 EF0 66 km 0.2 mi 0
Jun 27, 2023 EF0 74 km 0.1 mi 0
Jul 12, 2016 EF0 81 km 1.0 mi 0
May 9, 2013 EF0 57 km 0.1 mi 0
May 6, 2009 EF0 48 km 0.2 mi 0
Aug 21, 2006 EF0 60 km 0.2 mi 0
Jun 23, 2004 EF0 55 km 0.1 mi 0
Jul 13, 2002 EF0 73 km 0.2 mi 0
May 17, 1996 EF0 90 km 0.1 mi 0
May 11, 1995 EF0 64 km 0.1 mi 0
May 1, 1991 EF0 67 km 0.1 mi 0
Aug 24, 1987 EF0 84 km 0.2 mi 0
Jun 21, 1983 EF0 4 km 0.1 mi 0
Sep 16, 1975 EF0 59 km 0.1 mi 0
May 22, 1964 EF0 76 km 10.7 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: COLUMBIA COMPLEX (118,865 acres, 2006).

Year Name Acres Burned Distance
2006 COLUMBIA COMPLEX 118,865 94 km
2015 CORNET-WINDY RIDGE 102,553 87 km
2015 BUTTE CREEK 79,418 82 km
1996 TOWER 50,827 61 km
2021 GREEN RIDGE 44,604 97 km
1986 JOSEPH/STARVATION 37,064 86 km
1996 BULL COMPLEX (SUMMIT) 36,318 85 km
2024 THOMPSON 31,066 98 km
2000 UNNAMED 27,815 95 km
2021 ELBOW CREEK 23,103 69 km
2022 STURGILL 21,641 40 km
1996 UNNAMED 21,130 97 km
1989 DOOLEY MOUNTAIN 18,747 86 km
1989 CANAL 18,596 77 km
2015 DRY GULCH 18,369 91 km
2024 JACK CANYON MUTUAL AID 18,287 73 km
2009 NORTH FORK COMPLEX 16,461 67 km
1987 RYDER CREEK 16,269 63 km
2015 EAGLE 14,502 63 km
2022 NEBO 12,187 77 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (-0°C) 2.9 in
February 32°F (0°C) 2.1 in
March 37°F (3°C) 2.2 in
April 43°F (6°C) 1.9 in
May 50°F (10°C) 2.0 in
June 57°F (14°C) 1.7 in
July 70°F (21°C) 0.7 in Warmest, Driest
August 63°F (17°C) 0.9 in
September 55°F (13°C) 1.1 in
October 46°F (8°C) 1.7 in
November 36°F (2°C) 2.8 in
December 29°F (-2°C) 3.0 in Coldest, Wettest

Island City has a seasonal temperature swing of 42°F / from 29°F in December to 70°F in July. Total annual precipitation is 22.9 inches, with December being the wettest month (3.0") and July the driest (0.7").

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