Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

Lat: 47.54548°NLon: 122.3147°WElev: 20.0ft.

smoke

78°F

26°C

Humidity	38%
Wind Speed	W 6 MPH
Barometer	29.96 in (1014.56 mb)
Dewpoint	51°F (11°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	26 Aug 05:53 PM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Mercer Island WA

Tonight
Low: 60 °F
Increasing
Clouds
Thursday
High: 74 °F
Gradual
Clearing
Thursday Night
Low: 58 °F
Increasing
Clouds
Friday
High: 73 °F
Decreasing
Clouds
Friday Night
Low: 56 °F
Showers
Likely
Saturday
High: 71 °F
Showers
Likely then
Chance
Showers
Saturday Night
Low: 53 °F
Slight Chance
Rain then
Partly Cloudy
Sunday
High: 72 °F
Partly Sunny
Sunday Night
Low: 54 °F
Partly Cloudy

Detailed Forecast

Tonight

Increasing clouds, with a low around 60. South wind 3 to 7 mph.

Thursday

Cloudy through mid morning, then gradual clearing, with a high near 74. Southwest wind 6 to 10 mph.

Thursday Night

Increasing clouds, with a low around 58. Southwest wind 5 to 9 mph becoming light south after midnight.

Friday

Cloudy, then gradually becoming mostly sunny, with a high near 73. Light and variable wind.

Friday Night

Showers likely, mainly after 11pm. Mostly cloudy, with a low around 56. Light and variable wind becoming north northwest around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Showers likely, mainly before 11am. Partly sunny, with a high near 71. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night

A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 53.

Sunday

Partly sunny, with a high near 72.

Sunday Night

Partly cloudy, with a low around 54.

Monday

Partly sunny, with a high near 73.

Monday Night

Mostly cloudy, with a low around 56.

Tuesday

A slight chance of rain. Mostly cloudy, with a high near 71.