Portland

Gray Start, Fireworks Finish, Portland’s July Fourth Week Heats Up

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Published on July 01, 2026
Gray Start, Fireworks Finish, Portland’s July Fourth Week Heats UpSource: Google Street View

Portland rolled out of bed under a thick marine layer on Wednesday, July 1, 2026, with most lowland temperatures stuck in the low 50s and a solid deck of clouds overhead. Today’s high is still expected to climb to about 69°F, with clouds thinning by late afternoon and a few sun breaks likely west of I-5. The coast stays cooler in the 60s, and forecasters say there is little to no measurable precipitation on tap through the first week of July. If you have outdoor plans, think cool mornings and gentler, milder afternoons.

Afternoon Winds Pick Up

By late Wednesday afternoon an onshore sea breeze will nudge winds to the northwest, with sustained speeds in the 8–13 mph range and frequent gusts of 15–20 mph. Across the Columbia River Gorge and Upper Hood River Valley, gusts could reach 25–30 mph. That may mean a choppier ride for evening cyclists and a bit more sway for high-profile vehicles than usual, according to the National Weather Service.

Coastal Waters and Boaters

Offshore, conditions remain on the rough side, with 7–9 foot seas and northwest winds. A Small Craft Advisory is in effect until 11 AM PDT Wednesday, July 1, for the outer coastal waters from Cape Shoalwater to Florence. Inexperienced mariners and smaller vessels are advised to stick to protected harbors until things calm down, per the National Weather Service.

Holiday Weekend Outlook

From Friday into the July 4 holiday, inland locations look sunnier and warmer, with most valley spots likely landing in the low to mid 80s for July 4–7 while the coast stays in the 60s. Forecasters put the odds of those inland highs at roughly 70–90% each day and keep significant rain out of the picture through the week, which should leave most outdoor holiday plans dry. Expect inland waterfront events and fireworks spots to feel noticeably warmer than the beach.

What to pack: a light jacket for that stubborn morning marine layer, layers you can shed once the afternoon sun shows up, and a bit of extra caution if you are boating or driving through the Gorge this evening. Check the National Weather Service before heading out for the latest watches and marine details.