Pendleton, Oregon – Eastern Oregon residents should brace for triple-digit temperatures as a heat advisory remains in effect until 9 p.m. Tuesday, with highs expected to reach up to 102°F in Pendleton and nearby cities.
According to the National Weather Service in Pendleton, the advisory spans the Foothills of the Northern Blue Mountains of Oregon and Washington—including Pendleton, Athena, Pilot Rock, and Dayton. Daytime highs will range from 94 to 102°F, with overnight lows hovering in the 60s. These conditions pose a moderate to major risk of heat-related illness, especially for vulnerable groups lacking access to adequate cooling or hydration.
Cities like Walla Walla, WA, and Waitsburg could also see sweltering conditions Monday and Tuesday, making it critical to limit outdoor activity and check on neighbors. Local agencies advise drinking water frequently, avoiding midday exertion, and seeking shelter in air-conditioned spaces. Children and pets should never be left unattended in vehicles.
This is the region’s most intense heat spell of the summer so far, and more advisories could follow if the pattern persists. Relief may come with slightly cooler temperatures and a 20% chance of showers late Tuesday night.
☀️ Five-Day Forecast for Pendleton, OR:
- Monday: Sunny and hot, high near 98°F
- Monday Night: Mostly clear, low near 63°F
- Tuesday: High near 100°F, continued heat advisory
- Tuesday Night: Low around 66°F, slight (20%) chance of showers
- Wednesday: Mostly sunny, high near 93°F
- Thursday: Sunny, high near 88°F
- Friday: Mostly sunny, high near 87°F
