King County Airport (BFI) Weather 06/23/2026
Today
73
Sunny
Tonight
54
Clear
Saturday
80
Sunny
Saturday Night
59
Mostly Clear
Sunday
87
Sunny
Sunday Night
63
Partly Cloudy
Monday
88
Partly Sunny
Monday Night
63
Partly Cloudy
Tuesday
79
Sunny
Tuesday Night
57
Partly Cloudy
Wednesday
75
Mostly Sunny
Wednesday Night
56
Partly Cloudy
Thursday
76
Mostly Sunny
Weekly Forecast
Today
Sunny, with a high near 73. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Tonight
Clear, with a low around 54. North wind 5 to 7 mph becoming calm after midnight.
Saturday
Sunny, with a high near 80. Light northeast wind becoming north 5 to 10 mph in the morning.
Saturday Night
Mostly clear, with a low around 59. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 87. Calm wind becoming north 5 to 9 mph in the morning.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Partly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 76.