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
55°F
13°C
| Humidity | 71% |
| Wind Speed | N 0 MPH |
| Barometer | 30.15 in (1021.0 mb) |
| Dewpoint | 46°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 21 May 02:35 AM PDT |
Extended Forecast for
Mercer Island WA
Overnight
Low: 51 °F
Mostly Clear
Thursday
High: 71 °F
Sunny
Thursday Night
Low: 53 °F
Mostly Clear
Friday
High: 73 °F
Sunny
Friday Night
Low: 54 °F
Partly Cloudy
Saturday
High: 72 °F
Partly Sunny
Saturday Night
Low: 53 °F
Partly Cloudy
Sunday
High: 65 °F
Mostly Cloudy
Sunday Night
Low: 50 °F
Chance Rain
Detailed Forecast
Overnight
Mostly clear, with a low around 51. Calm wind.
Thursday
Sunny, with a high near 71. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 53. North northwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 73. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 54. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly cloudy, with a high near 65.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 50.
Memorial Day
Rain likely. Mostly cloudy, with a high near 59.
Monday Night
Rain likely. Mostly cloudy, with a low around 48.
Tuesday
A slight 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
47.58°N 122.25°W (Elev. 105 ft)
47.58°N 122.25°W (Elev. 105 ft)
11:26 pm PDT May 20, 2026
2am PDT May 21, 2026-6pm PDT May 27, 2026
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