King County Airport (BFI) Weather 07/13/2026
Today
74
Decreasing Clouds
Tonight
56
Partly Cloudy
Sunday
72
Becoming Sunny
Sunday Night
54
Mostly Clear
Monday
77
Sunny
Monday Night
56
Mostly Clear
Tuesday
83
Sunny
Tuesday Night
59
Mostly Clear
Wednesday
82
Sunny
Wednesday Night
58
Slight Chance Rain
Thursday
79
Slight Chance Rain then Mostly Sunny
Thursday Night
59
Mostly Clear
Friday
81
Sunny
Weekly Forecast
Today
Mostly cloudy, then gradually becoming sunny, with a high near 74. Southwest wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 56. West southwest wind 7 to 10 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 54. North wind 5 to 9 mph becoming light north northeast after midnight.
Monday
Sunny, with a high near 77. Calm wind becoming north 5 to 9 mph in the afternoon.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 82.
Wednesday Night
A slight chance of rain after 11pm. Mostly clear, with a low around 58.
Thursday
A slight chance of rain. Partly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 81.