Pendleton, Ore. – Dangerous heat will grip much of Oregon and southeast Washington through midweek, with forecasters warning this could be the longest heat event of the year. Temperatures are expected to climb to 95–105 degrees across lower elevations, including the Columbia Basin and Columbia River Gorge, through Wednesday.
According to the National Weather Service in Pendleton, Extreme Heat Warnings and Heat Advisories remain in effect for central and northeast Oregon, as well as south-central and southeast Washington. The agency says Major to Locally Extreme HeatRisk will impact the Columbia Basin, the Gorge, and surrounding foothills, while Moderate to Major HeatRisk extends into the John Day Basin, Grande Ronde Valley, and Wallowa Valley.
Officials urge residents to stay hydrated, limit outdoor activity between 10 a.m. and 4 p.m., and check on vulnerable neighbors. Light, loose-fitting clothing and use of air conditioning or cooling centers are recommended to avoid heat-related illness.
The prolonged heat wave is expected to last through Wednesday, with additional advisories possible if high temperatures persist later into the week.
