Portland is heating up in a hurry Thursday, April 30, with mostly sunny skies and an afternoon high near 80 on the table. Light north-northeast winds around 2 to 6 mph and dropping humidity will make it feel noticeably warmer. If Portland International Airport (KPDX) hits 80 degrees today, it will mark PDX's first 80-degree day of 2026, arriving a bit ahead of the local seasonal average.
Afternoon Through Sunday
Forecasters with the National Weather Service Portland expect highs in the mid 70s on Friday and Saturday before a bigger jump to near 90 on Sunday, May 3, for parts of the Portland and Vancouver metro area. Ensemble guidance currently shows about a 60 to 80 percent chance that some neighborhoods will top 90 degrees on Sunday, which would make it the warmest day of this stretch. Temperatures will still vary by spot, depending on cloud cover and onshore flow. The southern Willamette Valley may run a few degrees cooler if showers manage to develop.
Coastal And Marine Hazards
Small Craft Advisories remain posted for portions of the coastal waters and the Columbia River Bar into the weekend, with seas holding in the 6 to 8 foot range and a moderate sneaker wave risk along area beaches through at least Friday. Stronger afternoon breezes are expected south of Cape Falcon and during strong ebb currents at the bar, so small boat operators and beachgoers should take it slow and stay alert. Razor clam diggers and anyone near the surf are urged to give the shoreline extra space and keep an eye out for large, surprise waves.
Heat Safety And Local Relief
With Sunday shaping up as the hottest day of the stretch, residents are advised to limit strenuous outdoor activity during the peak afternoon heat, drink plenty of water, and watch children and pets for any signs of heat stress. For people who need an air conditioned break, check Multnomah County for heat guidance and local cooling center listings.
What To Expect For Commuters
Morning marine stratus will hang along the coast, but inland neighborhoods can expect clear, warm afternoons. Overnight lows should settle in the low to mid 50s. Valley winds are forecast to stay under 10 mph, which means generally easy travel and comfortable conditions for most outdoor plans.
