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

Renton Municipal Airport (KRNT)

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

Partly Cloudy

51°F

11°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 08 Oct 03:01 AM PDT
Extended Forecast for

3 Miles SSE Newcastle WA

  • Overnight

    Overnight: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70. Calm wind.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely after 5am. Increasing clouds, with a low around 52. Light and variable wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Partly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain, mainly before noon. High near 61. South southwest wind 5 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 47. South wind 3 to 8 mph.

    Low: 47 °F

    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 11am. Partly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 50. Calm wind.
Thursday
Partly sunny, with a high near 70. Calm wind.
Thursday Night
Rain likely after 5am. Increasing clouds, with a low around 52. Light and variable wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly before noon. High near 61. South southwest wind 5 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 47. South wind 3 to 8 mph.
Saturday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 60.
Sunday Night
Clear, with a low around 40.
Columbus Day
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
A chance of rain. Partly sunny, with a high near 62.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 47.
Wednesday
A slight chance of rain. Partly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Newcastle WA
 47.51°N 122.13°W (Elev. 400 ft)
Last Update:
2:20 am PDT Oct 8, 2026
Forecast Valid:
3am PDT Oct 8, 2026-6pm PDT Oct 14, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation