Portland woke up to clear skies and a crisp 57°F start, but the cool air will not stick around for long. The city is in for a quick warmup: expect a sunny, dry Sunday, July 19, 2026, with afternoon highs landing near 86°F. Light north‑northwest breezes will help keep inland neighborhoods warmer than the riverfront, while coastal spots stay noticeably cooler under a blanket of marine clouds. Today’s pleasant warmth is just the opening act for a more serious heat stretch building through the week.
Midweek Heat Peak
Temperatures are set to climb each day, with the hottest period expected on Tuesday, July 21, and Wednesday, July 22, when many inland valleys could push into the mid‑90s. Overnight lows holding in the 60s will limit cooling after dark and increase the risk of heat stress for anyone without air conditioning. The National Weather Service expects a strengthening ridge of high pressure to drive this warm spell, and you can find the full breakdown from NWS Portland.
Heat Risks And Precautions
Forecasters are flagging elevated heat risk across interior lowlands, and the Portland–Vancouver metro may brush up against a Major HeatRisk category on Tuesday if clouds stay scarce. Officials are urging basic but important steps: skip strenuous outdoor work during the hottest parts of the afternoon, drink more water than usual, check on older neighbors and infants, and move pets or people who are sensitive to medication into cooler environments. Employers and outdoor crews are advised to shift heavy labor into the morning or evening hours and watch closely for signs of heat exhaustion.
Coastal Winds And Small Craft Advisories
The coast will be dealing with a different flavor of summer. North‑northwest winds are expected to strengthen this afternoon, with gusts up to 25 kt, and a fresh northwest swell building seas to about 6–7 ft, prompting Small Craft Advisories that stretch into early Monday. Beaches will run cooler than Portland, but conditions offshore will be choppy and uncomfortable, so mariners should plan with care and pull the latest marine forecast before leaving the dock. Visitors heading to the shoreline can bank on cooler air on land paired with brisk, potentially hazardous conditions out on the water.
Cooling Options And Local Resources
Multnomah County, along with city partners, is prepared to open cooling centers when temperature thresholds are met. For the latest locations and resources, residents can call 211 or check the county’s heat guidance. Multnomah County maintains an updated map of cool spaces, including libraries and community centers. Anyone who is vulnerable to heat, or knows someone who is, is urged to make a plan now for where to go during the hottest hours of the day.
