Portland is starting Saturday, June 13 on a clear and cool note, with temperatures around 57°F at Portland International Airport, but the break is brief. A dangerous multi-day heat wave is on deck beginning Sunday, with the National Weather Service placing the metro under an Extreme Heat Warning from 11 a.m. Sunday, June 14 through 11 p.m. Tuesday, June 16.
How Hot And When
Daytime highs are expected to rocket into the low to mid 90s on Saturday (around 93°F), then climb into the mid to upper 90s on Sunday (near 97°F) and Monday (around 99°F). Forecasters say there is a 40 to 60 percent chance that some interior Willamette Valley locations could hit 100°F or higher on Monday. Offshore and northerly winds are expected, with inland gusts up to roughly 20 to 25 mph and stronger gusts through the Columbia River Gorge. Coastal waters may see Small Craft Advisories, according to the National Weather Service Portland.
Limited Overnight Relief
Overnight conditions will not offer much of a breather. Lows are expected mostly in the low to mid 60s (about 63 to 67°F), which means many homes and apartments may not cool down much before the next scorching afternoon. That lack of nighttime relief raises the risk of heat-related illness, especially for older adults, infants, and people with chronic conditions. If night temperatures stay elevated, the cumulative stress of several hot days will increase both health and infrastructure impacts.
Local Response And Where To Find Help
Multnomah County and the City of Portland maintain lists of cooling resources and will open staffed cooling spaces if needed. Residents are encouraged to call 211 for help finding a cooling location or transportation. See Multnomah County for local guidance and shelter information. Hoodline published a weekend preview of the developing heat watch earlier this week. See its weekend heat watch preview for background.
What To Do
Drink plenty of water, avoid strenuous outdoor activity during the afternoon peak, and check on neighbors, friends, and family who may be vulnerable. Never leave children or pets in parked cars, and if you work outside try to schedule the heaviest tasks for mornings or evenings while taking frequent breaks in shade or air conditioning. If you lose power or shelter, call 211 for guidance and keep an eye on local forecasts for updates.
