Current conditions at
Boeing Field - King County International Airport (KBFI)
Lat: 47.54548°NLon: 122.3147°WElev: 20.0ft.
Mostly Cloudy
43°F
6°C
| Humidity | 70% |
| Wind Speed | NNW 4 MPH |
| Barometer | 30.3 in (1026.08 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 41°F (5°C) |
| Last update | 27 Dec 12:00 PM PST |
Extended Forecast for
Mercer Island WA
This Afternoon
High: 43 °F
Mostly Sunny
Tonight
Low: 34 °F
Mostly Cloudy
Sunday
High: 44 °F
Partly Sunny
Sunday Night
Low: 35 °F
Mostly Cloudy
Monday
High: 46 °F
Mostly Cloudy
Monday Night
Low: 36 °F
Mostly Cloudy
Tuesday
High: 47 °F
Mostly Cloudy
Tuesday Night
Low: 38 °F
Mostly Cloudy
Wednesday
High: 49 °F
Slight Chance
Rain
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 43. Light north wind.
Tonight
Mostly cloudy, with a low around 34. Calm wind.
Sunday
Partly sunny, with a high near 44. Calm wind.
Sunday Night
Mostly cloudy, with a low around 35. Calm wind.
Monday
Mostly cloudy, with a high near 46. Calm wind.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
Mostly cloudy, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
A slight chance of rain after 10am. Mostly cloudy, with a high near 49.
Wednesday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 41.
New Year's Day
A chance of rain. Cloudy, with a high near 50.
Thursday Night
Rain likely. Mostly cloudy, with a low around 42.
Friday
Rain likely. Mostly cloudy, with a high near 48.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mercer Island WA
47.6°N 122.22°W (Elev. 3 ft)
47.6°N 122.22°W (Elev. 3 ft)
7:01 am PST Dec 27, 2025
12pm PST Dec 27, 2025-6pm PST Jan 2, 2026
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