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Seattle Weather: Dry, cool Halloween forecast

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FOX 13 Seattle
Weather
Published October 31, 2026 2:30 PM PDT
Published October 31, 2026 2:30 PM PDT
Seattle Weather: Dry and cool Halloween forecast
Seattle Weather: Dry and cool Halloween forecast

Seattle Weather: Dry and cool Halloween forecast

Good Day Seattle has your weather forecast for Halloween.

The Brief

    • Trick-or-treaters will see clear, rain-free skies, though temperatures will turn chilly, dropping into the 30s.
    • Patchy dense fog redevelops late Saturday night and lingers into Sunday morning before burning off to sunshine and highs in the 50s.
    • Western Washington will stay largely dry and cool through most of the week, with the next slight chance of rain holding off until Friday.

Seattle - Halloween got off to a spooky start Saturday morning with widespread fog around Western Washington. The dense fog advisory expired by late morning as the fog burned off and sunshine took over. 

Tonight's forecast will be a treat for all that celebrate!  Skies remain dry with more fog developing overnight.  Chilly temperatures dipping into the 30s.

Trick-or-Treating forecast for Saturday night.

Cool & dry for trick-or-treaters tonight for Halloween.  (FOX13 Seattle)

Clear skies and the wet ground will allow fog to redevelop late Saturday night.  Sunday morning will start off with more patchy dense fog.  It will burn off by late morning and skies remain sunny the rest of the day. 

Fog will redevelop for early Sunday morning.

Clear skies and wet ground will lead to more fog developing overnight.  (FOX13 Seattle)

Cool sunshine is forecast for Sunday.  Afternoon highs will remain in the low to mid 50s around much of Western Washington. 

Less fog is forecast for Sunday night with overnight lows near 40. 

Forecast highs around the region.

Cool sunshine around the region on Sunday.  (FOX13 Seattle)

A chilly but dry Halloween night.  Dry skies stick around for much of the week with a slight chance of showers returning by Friday.  Afternoon highs will be a little closer to normal this upcoming week. 

The extended forecast for the Seattle metro area.

Dry skies for much of the week with a slight chance of showers returning by Friday.  (FOX13 Seattle)

The Source: Information for this story came from the FOX 13 Seattle Weather Team.

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