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.

Rain

57°F

14°C

Humidity 100%
Wind Speed SSE 3 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 30 Sep 12:10 AM PDT
Extended Forecast for

3 Miles E Newcastle WA

  • Overnight

    Overnight: A slight chance of showers between 2am and 3am. Partly cloudy, with a steady temperature around 54. Southeast wind around 8 mph. Chance of precipitation is 20%.

    Low: 54 °F

    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. South wind 8 to 17 mph, with gusts as high as 22 mph. 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%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers

  • Thursday Night

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

    Low: 50 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Friday

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

    High: 62 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers between 2am and 3am. Partly cloudy, with a steady temperature around 54. Southeast wind around 8 mph. Chance of precipitation is 20%.
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. South wind 8 to 17 mph, with gusts as high as 22 mph. 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%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A 50 percent 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, mainly before 11am. 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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Forecast Area
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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:
8:01 pm PDT Sep 29, 2025
Forecast Valid:
12am PDT Sep 30, 2025-6pm PDT Oct 6, 2025
 
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