King County Airport (BFI) Weather 09/22/2025
This Afternoon
71
Sunny
Tonight
53
Clear
Friday
73
Sunny
Friday Night
54
Mostly Clear
Saturday
72
Mostly Sunny
Saturday Night
58
Rain
Sunday
70
Rain Likely then Chance Rain
Sunday Night
53
Slight Chance Rain then Partly Cloudy
Monday
71
Mostly Sunny
Monday Night
55
Slight Chance Rain
Tuesday
72
Mostly Sunny
Tuesday Night
56
Slight Chance Rain
Wednesday
71
Chance Rain
Weekly Forecast
This Afternoon
Sunny, with a high near 71. North northwest wind around 9 mph.
Tonight
Clear, with a low around 53. North wind 5 to 7 mph becoming calm after midnight.
Friday
Sunny, with a high near 73. Calm wind becoming north northwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 54. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 72. Light south wind becoming south southwest 5 to 9 mph in the morning.
Saturday Night
Rain, mainly after 11pm. Low around 58. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain likely, mainly before 11am. Partly sunny, with a high near 70. Chance of precipitation is 70%.
Sunday Night
A slight chance of rain before 11pm. Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 71.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 72.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 56.
Wednesday
A chance of rain. Partly sunny, with a high near 71.