Portland, OR – The region’s extreme heat is set to break midweek, offering relief from triple-digit highs and opening the door to a slight chance of rain before the weekend. Until then, an Extreme Heat Warning remains in effect through 10 p.m. Tuesday, with temperatures soaring between 97 and 105 degrees and warm nights holding in the upper 60s to low 70s.
According to the National Weather Service, cooler marine air will begin pushing inland by Wednesday, dropping highs into the low-to-mid 80s. By Friday, a weak weather system may bring scattered showers to Portland and surrounding valleys — the first measurable rain chance in weeks.
Health officials urge residents to continue heat precautions until Tuesday night. Stay indoors during peak afternoon heat, keep hydrated, and check on neighbors, especially those without air conditioning. Cooling centers remain open in Multnomah, Washington, and Clackamas counties.
After Friday’s possible showers, conditions look mild heading into the weekend, with highs in the 70s.
Five Day Forecast for Portland, OR:
- Monday: Sunny, extreme heat. High 99°F, low 69°F
- Tuesday: Sunny, extreme heat continues. High 98°F, low 64°F
- Wednesday: Sunny and cooler. High 84°F, low 59°F
- Thursday: Partly sunny and mild. High 77°F, low 61°F
- Friday: Chance of rain showers. High 74°F, low 63°F
