Pacific Storm System Across the West; Fire Weather Concerns in the Southeast

A Pacific storm system will bring strong winds and low elevation rain to much of the West Coast, and heavy high elevation mountain snow to the Sierra-Nevada through Wednesday. Fire weather concerns will continue into Tuesday across the Mid-South and Southeast as gusty winds and dry conditions persist. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Clear

54°F

12°C

Humidity 71%
Wind Speed S 3 MPH
Barometer 29.79 in (1008.81 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 21 Apr 05:00 AM PDT
Extended Forecast for

Mercer Island WA

  • Today

    Today: Rain likely, mainly after 4pm.  Mostly cloudy, with a high near 61. South southwest wind 5 to 7 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Chance Rain
    then Rain
    Likely

  • Tonight

    Tonight: Rain, mainly after 3am.  Low around 50. South wind around 6 mph becoming calm.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 11am.  Mostly cloudy, with a high near 58. South southwest wind 8 to 11 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 48. South southwest wind 8 to 11 mph.

    Low: 48 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62. South southwest wind around 6 mph becoming northwest in the afternoon.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Today
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 61. South southwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after 3am. Low around 50. South wind around 6 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain likely, mainly before 11am. Mostly cloudy, with a high near 58. South southwest wind 8 to 11 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 48. South southwest wind 8 to 11 mph.
Thursday
Partly sunny, with a high near 62. South southwest wind around 6 mph becoming northwest in the afternoon.
Thursday Night
Clear, with a low around 44.
Friday
Sunny, with a high near 67.
Friday Night
Clear, with a low around 46.
Saturday
Sunny, with a high near 69.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.56°N 122.21°W (Elev. 121 ft)
11:26 pm PDT Apr 20, 2026
5am PDT Apr 21, 2026-6pm PDT Apr 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database