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Weather & Climate in Connell, WA

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

Connell experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 33°F in January while summers reach 72°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 8.8 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 905 feet.

Temperature

33°F Jan (0°C) 72°F Jul (22°C)
Annual Average51.7°F
4% below US avg
January Average33°F (0°C)
July Average72°F (22°C)
Sunny Days279 days/yr

Geography

Elevation905 ft (276 m)
Area3.0 sq mi (7.7 km²)
Population Density683/sq mi
Coordinates46.6605°N, 118.8406°W
TimezoneAmerica/Los_Angeles
CountyFranklin County County
Nearest AirportTri-Cities (PSC)
30 miles away

Precipitation & Snow

Annual Rainfall 8.8"
77% below US avg
Wettest Month (Dec) 1.22"
Driest Month (Jul) 0.28"

Air Quality

AQI Median28.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score72.5 / 100
Social Vulnerability31.5 / 100
Community Resilience15.5 / 100

Hazard Breakdown

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

Earthquake History

200 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 85 km 9 km
Jul 14, 1992 6 km S of Walla Walla East, Washington M4.1 85 km 11 km
Nov 18, 1997 20 km NW of Bickleton, Washington M3.9 138 km 15 km
Aug 7, 1992 8 km WSW of Irrigon, Oregon M3.9 106 km 0 km
Jun 28, 1998 3 km SE of Genesee, Idaho M3.8 149 km 10 km
Jul 4, 1997 8 km NNE of Waterville, Washington M3.7 148 km 7 km
May 18, 2008 11 km SSW of Benton City, Washington M3.7 77 km 20 km
Jan 1, 1997 14 km NNE of Selah, Washington M3.7 124 km 18 km
Sep 4, 2011 14 km N of Richland, Washington M3.7 42 km 2 km
Jan 23, 2015 3 km N of Cayuse, Oregon M3.5 108 km 20 km
Jun 29, 2005 0 km SE of Gleed, Washington M3.5 135 km 9 km
Oct 26, 1992 12 km N of Naches, Washington M3.5 144 km -1 km
Oct 12, 2017 25 km NW of Bickleton, Washington M3.4 142 km 13 km
Jun 17, 2004 11 km SSE of Washtucna, Washington M3.4 46 km 17 km
Dec 22, 1990 9 km NW of Mattawa, Washington M3.4 89 km 3 km
Jul 6, 1991 7 km SE of Kittitas, Washington M3.4 118 km 3 km
Feb 1, 1991 14 km NE of Naches, Washington M3.4 132 km 6 km
Nov 6, 1997 22 km SE of Desert Aire, Washington M3.4 68 km 22 km
Jan 24, 1992 4 km WNW of Waterville, Washington M3.4 148 km 6 km
Oct 15, 2011 13 km N of Richland, Washington M3.4 43 km 1 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

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

Date Rating Distance Path Fatalities
Mar 14, 1966 EF2 82 km 1.0 mi 0
Jun 26, 1958 EF2 66 km 0.3 mi 0
Jan 16, 2000 EF1 75 km 1.0 mi 0
Aug 10, 1985 EF1 38 km 1.0 mi 0
Apr 23, 1983 EF1 19 km 3.0 mi 0
Jul 1, 1978 EF1 8 km 2.3 mi 0
Mar 5, 2024 EF0 94 km 0.2 mi 0
Jun 27, 2023 EF0 87 km 0.1 mi 0
May 26, 2023 EF0 72 km 0.4 mi 0
Mar 31, 2020 EF0 50 km 0.1 mi 0
May 22, 2016 EF0 57 km 0.2 mi 0
Aug 13, 2014 EF0 83 km 0.3 mi 0
May 19, 2010 EF0 63 km 0.2 mi 0
Jun 7, 2004 EF0 99 km 0.5 mi 0
May 11, 2003 EF0 44 km 0.1 mi 0
Jul 9, 1995 EF0 99 km 0.1 mi 0
May 1, 1991 EF0 99 km 0.1 mi 0
Aug 24, 1987 EF0 77 km 0.2 mi 0
Apr 23, 1983 EF0 32 km 0.5 mi 0
Aug 9, 1982 EF0 43 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 19.8 m (65 ft).

Year Location Cause Max Wave Deaths Distance
1949 COLUMBIA RIVER VALLEY, WA Meteorological 19.8 m — 134 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 9.0 m — 141 km
2009 COLUMBIA RIVER VALLEY, WA Meteorological 3.6 m — 147 km
Source: NOAA/NCEI Historical Tsunami Database.

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 81 km
2000 24 COMMAND 162,300 62 km
1984 HANFORD 122,914 62 km
2006 COLUMBIA COMPLEX 118,865 96 km
2007 WAUTOMA 77,956 68 km
1996 COLD CREEK 72,859 92 km
2018 BOYLSTON 66,292 99 km
2009 DRY CREEK COMPLEX 49,843 88 km
2019 COLD CREEK 43,756 65 km
2003 UMTANUM RIDGE 34,351 93 km
2017 SILVER DOLLAR 30,789 72 km
2017 400 27,218 88 km
2020 TAYLOR POND 22,591 98 km
2018 L RD SW 22,101 62 km
1996 UNNAMED 21,130 72 km
2005 WALKER CANYON 20,764 32 km
2007 OVERLOOK 20,363 42 km
2010 EUREKA 19,811 33 km
2019 243 COMMAND 18,876 75 km
2016 BLACK ROCK ROAD 17,398 73 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 33°F (0°C) 0.9 in
February 37°F (3°C) 0.8 in
March 45°F (7°C) 0.8 in
April 51°F (11°C) 0.6 in
May 59°F (15°C) 0.7 in
June 67°F (19°C) 0.5 in
July 72°F (22°C) 0.3 in Warmest, Driest
August 72°F (22°C) 0.4 in
September 63°F (17°C) 0.4 in
October 51°F (11°C) 0.6 in
November 40°F (4°C) 1.1 in
December 32°F (-0°C) 1.2 in Coldest, Wettest

Connell has a seasonal temperature swing of 41°F / from 32°F in December to 72°F in July. Total annual precipitation is 8.4 inches, with December being the wettest month (1.2") and July the driest (0.3").

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