National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

57°F

14°C

Humidity 58%
Wind Speed NNW 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 Apr 11:55 AM PDT
Extended Forecast for

Sammamish WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 69. Calm wind.

    High: 69 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 74. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. Light east northeast wind.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 72. Light and variable wind.

    High: 72 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of rain. Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 11am. Cloudy, with a high near 55.

    High: 55 °F

    Rain Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 69. Calm wind.
Tonight
Partly cloudy, with a low around 46. Calm wind.
Sunday
Partly sunny, with a high near 74. Calm wind becoming east northeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 48. Light east northeast wind.
Monday
Partly sunny, with a high near 72. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 64.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 48.
Wednesday
Rain likely, mainly before 11am. Cloudy, with a high near 55.
Wednesday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 46.
Thursday
A slight chance of rain. Partly sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sammamish WA
 47.6°N 122.03°W (Elev. 463 ft)
Last Update:
11:26 am PDT Apr 18, 2026
Forecast Valid:
12pm PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation