Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday
A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >
Current conditions at
Boeing Field - King County International Airport (KBFI)
Lat: 47.54548°NLon: 122.3147°WElev: 20.0ft.
Clear
66°F
19°C
| Humidity | 42% |
| Wind Speed | NW 5 MPH |
| Barometer | 30.14 in (1020.66 mb) |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 20 May 07:00 PM PDT |
Extended Forecast for
Mercer Island WA
Tonight
Low: 50 °F
Decreasing
CloudsThursday
High: 76 °F
Sunny
Thursday Night
Low: 53 °F
Mostly Clear
Friday
High: 77 °F
Sunny
Friday Night
Low: 55 °F
Partly Cloudy
Saturday
High: 77 °F
Mostly Sunny
Saturday Night
Low: 53 °F
Partly Cloudy
Sunday
High: 70 °F
Partly Sunny
Sunday Night
Low: 51 °F
Chance Rain
Detailed Forecast
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 50. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 76. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 53. North northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 77. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 55. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Partly sunny, with a high near 70.
Sunday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 51.
Memorial Day
Rain likely, mainly after 11am. Mostly cloudy, with a high near 61.
Monday Night
Rain likely. Mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 69.
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)
12:25 pm PDT May 20, 2026
7pm PDT May 20, 2026-6pm PDT May 27, 2026
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