Pendleton, Oregon – Triple-digit heat is set to grip eastern Oregon and central Washington through Labor Day weekend, with some cities likely to challenge daily temperature records by Tuesday.
According to the National Weather Service in Pendleton, this extended heat wave will push highs into the upper 90s and low 100s across the region. Cities including Yakima, Tri-Cities, Redmond, and Hermiston are forecast to hit 102°F to 105°F between Sunday and Tuesday. In Pendleton, Tuesday’s projected high of 98°F comes within striking distance of the 97°F record set in 1988.
The heat will persist with little overnight relief. Low temperatures are expected to hover in the mid to upper 60s, increasing the risk of heat-related illness for those without proper cooling.
Residents are urged to avoid strenuous activity during peak afternoon hours, stay hydrated, and check on vulnerable neighbors or family members. Agricultural workers and those commuting in non-air-conditioned vehicles should also take extra precautions.
With high pressure anchoring over the region, this could be summer’s final surge—though more advisories may follow if the heat lingers into midweek.
Five-Day Forecast for Pendleton, OR:
- Saturday: High 94°F / Low 67°F – Sunny, hot
- Sunday: High 95°F / Low 68°F – Continued heat
- Monday (Labor Day): High 96°F / Low 68°F – Dry and very warm
- Tuesday: High 98°F / Low 67°F – Record-challenging heat
- Wednesday: High 95°F / Low 66°F – Slight cooling, still above average
