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Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

70°F

21°C

Humidity 43%
Wind Speed NNW 5 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 Apr 03:35 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: A slight chance of rain between 8pm and 1am. Partly cloudy, with a low around 49. Northwest wind 5 to 7 mph becoming south after midnight. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain. Mostly cloudy, with a high near 58. South wind 5 to 8 mph becoming west southwest in the afternoon.

    High: 58 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 11pm. Cloudy, with a low around 48. South southwest wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 11am. Cloudy, with a high near 53. South southwest wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 11pm. Mostly cloudy, with a low around 46. South southwest wind 6 to 8 mph.

    Low: 46 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain between 8pm and 1am. Partly cloudy, with a low around 49. Northwest wind 5 to 7 mph becoming south after midnight. Chance of precipitation is 20%.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 58. South wind 5 to 8 mph becoming west southwest in the afternoon.
Tuesday Night
Rain likely, mainly after 11pm. Cloudy, with a low around 48. South southwest wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain likely, mainly before 11am. Cloudy, with a high near 53. South southwest wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 30 percent chance of rain before 11pm. Mostly cloudy, with a low around 46. South southwest wind 6 to 8 mph.
Thursday
Partly sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.55°N 122.14°W (Elev. 538 ft)
Last Update:
11:26 am PDT Apr 20, 2026
Forecast Valid:
3pm PDT Apr 20, 2026-6pm PDT Apr 27, 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