Portland, Oregon – After a damp start to Memorial Day, Portland dries out fast — and summer heat follows quickly behind.
A 30% chance of rain lingers Monday morning before clouds clear and temperatures climb to a mild 71°F. According to the National Weather Service in Portland, sunshine dominates the rest of the week with highs rising sharply by midweek — nearing 89°F by Wednesday. Residents should prepare now for a summer-like stretch and take precautions as fire danger may increase across western Oregon.
While travelers on I-5 near Portland could see slick roads early Monday, conditions improve by midday. The light rain ends before noon, leaving the rest of the holiday dry and seasonable. Winds remain calm, but UV levels will climb midweek. Anyone planning extended outdoor activities or barbecues should stay hydrated and apply sunscreen frequently.
Tuesday brings mostly sunny skies with a high near 81°F. By Wednesday, Portland could hit its warmest day of the season so far at 89°F under clear skies — a 15-degree jump from the holiday. Overnight lows stay in the upper 50s, offering mild relief.
Looking ahead, Thursday and Friday remain mostly sunny with highs in the upper 70s and mid-80s, respectively. No major storm systems are expected, but elevated fire weather conditions are possible if dry heat continues into the weekend.
