Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through Monday. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Partly Cloudy

48°F

9°C

Humidity 93%
Wind Speed S 3 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 01 Feb 08:00 PM PST
Extended Forecast for

Newcastle WA

  • Tonight

    Tonight: A slight chance of rain before 4am, then a slight chance of rain after 5am.  Mostly cloudy, with a low around 43. South southeast wind around 8 mph.  Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    Rain

  • Monday

    Monday: Rain, mainly before 1pm.  High near 49. Southeast wind around 6 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain

  • Monday Night

    Monday Night: A 30 percent chance of rain before 10pm.  Mostly cloudy, with a low around 44. East southeast wind 3 to 6 mph.

    Low: 44 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Light east wind.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. East southeast wind around 6 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain before 4am, then a slight chance of rain after 5am. Mostly cloudy, with a low around 43. South southeast wind around 8 mph. Chance of precipitation is 20%.
Monday
Rain, mainly before 1pm. High near 49. Southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 30 percent chance of rain before 10pm. Mostly cloudy, with a low around 44. East southeast wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 57. Light east wind.
Tuesday Night
Mostly cloudy, with a low around 46. East southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 57.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 44.
Saturday
A chance of rain. Partly sunny, with a high near 54.
Saturday Night
Rain likely. Mostly cloudy, with a low around 46.
Sunday
Rain likely. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
7:00 pm PST Feb 1, 2026
8pm PST Feb 1, 2026-6pm PST Feb 8, 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