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.

Mostly Cloudy

36°F

2°C

Humidity 92%
Wind Speed S 3 MPH
Barometer 30.46 in (1031.49 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 27 Dec 07:53 PM PST
Extended Forecast for

3 Miles NNE Newcastle WA

  • Tonight

    Tonight: Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 11am. Otherwise, increasing clouds, with a high near 42. Calm wind.

    High: 42 °F

    Areas Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 46. Calm wind.

    High: 46 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Patchy fog before 3am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Patchy Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of rain after 10pm. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 32. Calm wind.
Sunday
Areas of fog before 11am. Otherwise, increasing clouds, with a high near 42. Calm wind.
Sunday Night
Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 33. Calm wind.
Monday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 46. Calm wind.
Monday Night
Patchy fog before 3am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 33. Calm wind.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Mostly cloudy, with a high near 49.
Wednesday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 38.
New Year's Day
A chance of rain. Mostly cloudy, with a high near 50.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40.
Friday
Rain likely. Mostly cloudy, with a high near 47.
Friday Night
Rain likely. Mostly cloudy, with a low around 38.
Saturday
A chance of rain. Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Newcastle WA
 47.59°N 122.12°W (Elev. 256 ft)
Last Update:
7:01 pm PST Dec 27, 2025
Forecast Valid:
8pm PST Dec 27, 2025-6pm PST Jan 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation