Seattle starts Thursday with clear skies and temperatures around 61 degrees at Boeing Field, then heads for another sunny afternoon near 80. Winds should stay light from the north-northwest, making this a prime late-summer day for parks, patios, and errands before the weekend changes the script.
Thursday Stays Sunny, Friday Turns Cloudier
The National Weather Service Seattle forecast calls for a low near 60 Thursday night, followed by another high around 80 on Friday. Friday will be mostly cloudy rather than fully gray, with a light northwest breeze around 5 mph and almost no chance of daytime rain.
Rain Arrives Late Friday
The weekend is where the forecast changes gears. Rain has a 50% chance of arriving after 11 p.m. Friday, and Saturday could see light rain before 5 p.m., mostly cloudy skies, south-southwest winds around 10 mph, and a much cooler high near 71.
Saturday Could Bring Thunderstorms
The broader forecast discussion says the system moving through Western Washington could produce showers and possible thunderstorms, with the highest odds over the Olympics and Cascades but some threat even in the lowlands. Seattle's point forecast lists new rainfall amounts below a tenth of an inch, though downpours, lightning, and gusty or erratic winds could develop near any storm, so outdoor plans may want a backup option.
Quieter, Cooler Pattern Returns Sunday
Sunday looks partly sunny with a high near 72, followed by mostly sunny conditions Monday and Tuesday in the low to mid-70s. Wednesday stays mostly sunny with a high near 72, and no watches or warnings are currently posted for the Seattle area.
