Marine clouds bring cooler days in western Washington Monday–Tuesday, with sunshine and warmer highs returning by Thursday.
A weekend of sunshine in western Washington didn’t fully carry over—marine clouds moved back in early Monday, leaving many staring at a gray sky.
What’s driving the blanket of clouds
Cooler Monday and Tuesday
For day-to-day plans—school drop-offs, evening walks, and that “maybe we’ll grill” optimism—this kind of change matters.. A cooler. cloudier pattern tends to feel heavier. even when it isn’t cold enough to prompt big weather gear decisions.. The upside: while it’s gray, conditions are not described as stormy or disruptive.
Sunshine returns midweek: the Thursday shift
Thursday is then positioned as the brighter, warmer payoff—plenty of sunshine with temperatures continuing their upward trend. Forecast highs are expected to land in the mid-60s to mid-70s across western Washington, depending on location and exposure.
A quick cloud pause. then a sunnier weekend
Rain is not on the near-term radar
What this means for the next few weeks
At SEA, the warmest temperature so far this year was 74 degrees on April 19. With highs on Thursday or Sunday potentially exceeding that level, the week’s second half could feel like a real step back toward late-spring temperatures.
Mountains: higher freezing levels, mostly dry
There is only a slim chance of a late-day, isolated shower through Tuesday. Beyond that, the overall theme remains dry.