Pendleton residents face dangerous heat as highs approach 99°F Sunday, keeping much of Eastern Oregon under an excessive heat warning through Tuesday. Dangerous conditions could hit drivers on I-84, where extended sun exposure may cause vehicle breakdowns and heat-related illness for travelers.
According to the National Weather Service, Pendleton will stay hot and mostly clear through Sunday, with highs near 99°F. Temperatures remain above 95°F until midweek, prompting warnings for limited outdoor activity. Officials urge residents to avoid prolonged sun exposure, stay hydrated, and check on vulnerable neighbors, especially the elderly and young children.
The heat also impacts agriculture and outdoor work. Farm and construction crews across Umatilla County are advised to adjust schedules to early morning or evening hours to reduce risks. Pets should remain indoors, and vehicles should never be left unattended with children or animals inside.
Evening relief will be minimal, with lows only dropping to the mid-60s. That means overnight cooling is limited, keeping homes and apartments uncomfortably warm. Power usage will likely spike as air conditioners run continuously, increasing the risk of localized outages.
Monday stays partly sunny with a high near 97°F, followed by mostly sunny skies Tuesday near 97°F again. Temperatures start to ease slightly by Wednesday, dipping to 95°F, but heat concerns remain elevated until at least midweek.
Heat warnings stay in effect through Tuesday evening. Residents should expect additional advisories if the pattern lingers.
Five Day Forecast for Pendleton, Oregon
- Sunday: Hot, high near 99°F. Low 66°F.
- Monday: Partly sunny, high near 97°F. Low 66°F.
- Tuesday: Mostly sunny, high near 97°F. Low 65°F.
- Wednesday: Mostly sunny, high near 95°F. Low 63°F.
- Thursday: Mostly sunny, high near 94°F.
