Critical Fire Weather in the Plains; Unseasonably Warm in the Southwest and Southern U.S.

Unseasonably warm temperatures continue through the weekend across the Southwest and southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Elevated to critical fire weather conditions will persist across the Plains and Southeast U.S. this weekend. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

48°F

9°C

Humidity 61%
Wind Speed N 6 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 27 Mar 11:20 PM PDT
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 42. Light northeast wind.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 10 percent chance of rain after 5pm.  Partly sunny, with a high near 54. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 54 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A slight chance of rain before 9pm, then a slight chance of rain after 4am.  Mostly cloudy, with a low around 37. West northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Rain, possibly mixed with snow, mainly after 11am.  High near 47. East wind 5 to 8 mph becoming southwest in the afternoon.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow before 8pm, then rain likely between 8pm and 11pm, then a slight chance of snow after 11pm.  Mostly cloudy, with a low around 32. West northwest wind 5 to 8 mph becoming south in the evening.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Monday

    Monday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain after 11pm.  Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 42. Light northeast wind.
Saturday
A 10 percent chance of rain after 5pm. Partly sunny, with a high near 54. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
A slight chance of rain before 9pm, then a slight chance of rain after 4am. Mostly cloudy, with a low around 37. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
Rain, possibly mixed with snow, mainly after 11am. High near 47. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday Night
Rain likely, possibly mixed with snow before 8pm, then rain likely between 8pm and 11pm, then a slight chance of snow after 11pm. Mostly cloudy, with a low around 32. West northwest wind 5 to 8 mph becoming south in the evening. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday
Sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Mostly cloudy, with a high near 51.
Tuesday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 40.
Wednesday
Rain. Cloudy, with a high near 48.
Wednesday Night
Rain. Mostly cloudy, with a low around 38.
Thursday
Rain likely. Mostly cloudy, with a high near 50.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 39.
Friday
A slight chance of rain. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
11:27 pm PDT Mar 27, 2026
11pm PDT Mar 27, 2026-6pm PDT Apr 3, 2026
 
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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