Central Seattle is starting off gray and cool on Saturday, July 4, 2026, with a stubborn marine layer clinging to the waterfront and low clouds filling in across town. Boeing Field clocked in around 59°F at 5:40 a.m., but that cloud deck is expected to thin out and break by afternoon, giving most neighborhoods mostly sunny skies and a high near 72°F.
Afternoon and Evening
Inland spots should warm into the low 70s, while shoreline neighborhoods hang back in the mid 60s. Southwest winds look light this afternoon (around 3 to 8 mph), then turn north-northeast tonight as lows dip to about 55°F. A recent outlook that flagged this same pattern is holding up so far.
Boaters Should Watch The Strait And Admiralty Inlet
According to the National Weather Service, small craft advisories are expected this evening (Saturday, July 4) into Sunday, July 5, for parts of the Strait of Juan de Fuca, Admiralty Inlet and the outer coast, as seas build to 6 to 10 feet through Monday, July 6. Westerly winds could gust to around 20 knots (about 23 mph), so mariners should plan on choppy conditions and look for more sheltered launches.
What This Means For Your Plans
If you are heading to waterfront parades or fireworks, count on a cool, gray start that gives way to a pleasant, mostly sunny afternoon. You will want a light jacket handy for the evening, when temperatures slide back into the mid 50s. Boaters may want to move plans earlier in the day or into protected bays, and should check the latest marine forecast before heading out.
