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.

Overcast

64°F

18°C

Humidity 86%
Wind Speed SSE 3 MPH
Barometer 29.79 in (1008.81 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 29 Sep 04:53 PM PDT
Extended Forecast for

3 Miles E Newcastle WA

  • This Afternoon

    This Afternoon: Showers. Patchy fog. Steady temperature around 60. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers likely, mainly before 2am. Patchy fog before 7pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 51. South wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm. Patchy fog before 8am. Otherwise, increasing clouds, with a high near 67. East southeast wind 5 to 11 mph becoming south in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Patchy Fog
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 53. South wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Rain

  • Wednesday

    Wednesday: Rain likely before 11am, then showers between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 64. South wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 52. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Showers

  • Thursday

    Thursday: Showers. High near 60. Chance of precipitation is 80%.

    High: 60 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 62.

    High: 62 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Showers. Patchy fog. Steady temperature around 60. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers likely, mainly before 2am. Patchy fog before 7pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 51. South wind around 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain likely, mainly after 4pm. Patchy fog before 8am. Otherwise, increasing clouds, with a high near 67. East southeast wind 5 to 11 mph becoming south in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain. Low around 53. South wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain likely before 11am, then showers between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 64. South wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers. Low around 52. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers. High near 60. Chance of precipitation is 80%.
Thursday Night
A chance of showers, mainly before 11pm. Mostly cloudy, with a low around 50.
Friday
A slight chance of showers. Partly sunny, with a high near 62.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50.
Saturday
A chance of showers. Partly sunny, with a high near 60.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Newcastle WA
 47.53°N 122.11°W (Elev. 1237 ft)
Last Update:
2:25 pm PDT Sep 29, 2025
Forecast Valid:
5pm PDT Sep 29, 2025-6pm PDT Oct 6, 2025
 
Forecast Discussion
 
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Additional Resources

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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