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

48°F

9°C

Humidity 76%
Wind Speed SSE 10 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 24 Nov 01:35 PM PST
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: A chance of rain before 2pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 45. South southwest wind around 7 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Tonight

    Tonight: A 10 percent chance of rain before 8pm. Mostly cloudy, with a low around 38. East southeast wind 3 to 5 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 9am. High near 43. Southeast wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 43 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 40. Southeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 48. Southeast wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 45. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Rain

  • Thanksgiving Day

    Thanksgiving Day: Rain. High near 51. Chance of precipitation is 90%.

    High: 51 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

  • Friday

    Friday: A chance of rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

Detailed Forecast

This Afternoon
A chance of rain before 2pm, then a chance of rain after 4pm. Mostly cloudy, with a high near 45. South southwest wind around 7 mph. Chance of precipitation is 30%.
Tonight
A 10 percent chance of rain before 8pm. Mostly cloudy, with a low around 38. East southeast wind 3 to 5 mph.
Tuesday
Rain, mainly after 9am. High near 43. Southeast wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 40. Southeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 48. Southeast wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 45. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thanksgiving Day
Rain. High near 51. Chance of precipitation is 90%.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 42.
Friday
A chance of rain. Mostly cloudy, with a high near 49.
Friday Night
A chance of rain. Mostly cloudy, with a low around 39.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 46.
Saturday Night
A chance of rain and snow. Partly cloudy, with a low around 33.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
Last Update:
1:26 pm PST Nov 24, 2025
Forecast Valid:
1pm PST Nov 24, 2025-6pm PST Nov 30, 2025
 
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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