Portlanders are waking up Tuesday, June 9, 2026, to a gray start and a chill in the air, with temperatures sitting near 55°F at Portland International Airport and a messy mix of showers and scattered thunderstorms expected through midmorning. Rain should back off to more hit-or-miss showers by afternoon, with the high topping out near 64°F and southwest winds around 13 mph, gusting up to 24 mph in the stronger cells.
Morning Showers And Brief Thunder
The storm action is front-loaded. Showers and thunderstorms are most likely before 10 a.m., with a smaller chance for a few additional rumbles into early afternoon. The overall chance of precipitation this morning sits near 60%, and any storms that do pop could deliver heavy downpours in quick bursts.
Out on the coast, mariners get no free pass: Small Craft Advisories remain in effect into the evening, so conditions will be choppy. For timing and the latest details, see the National Weather Service.
Winds Could Slow The Commute
Southwest winds around 13 mph, with gusts up to 24 mph, may nudge around high-profile vehicles and slow the morning commute on local bridges. Brief visibility drops are possible in heavier showers, which could turn a routine drive into more of a crawl.
By afternoon, skies should begin trending partly sunny, while winds are expected to ease overnight as this system finally pulls away.
Major Heat Wave Expected June 13–16
The cool, cloudy start does not stick around for long. Forecast models point to a rapid warmup later this week, building into a multi-day heat event from Saturday, June 13, through Tuesday, June 16, 2026.
Current guidance suggests a 45–75% chance of daytime highs above 90°F in parts of the Willamette Valley on Saturday. By Sunday, June 14, odds jump to 30–50% for hitting 100°F, with Portland and the northern valley carrying the highest probabilities.
Overnight lows are not expected to offer much relief, and drier, gustier conditions will raise both fire-weather concerns and heat-related impacts. In other words, this is the kind of stretch you plan for, not just sweat through.
How To Prepare
As temperatures climb later this week, shift strenuous outdoor work to the coolest hours of the day, stay on top of hydration, and check in on older neighbors or anyone who lacks air conditioning.
For yesterday’s background on this unfolding pattern, see an earlier update on yesterday’s soaking rains and howling south winds.
