National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

50°F

10°C

Humidity 93%
Wind Speed S 6 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 12 Jan 08:20 AM PST
Extended Forecast for

4 Miles SSE Newcastle WA

  • Today

    Today: A 40 percent chance of rain, mainly before 4pm. Cloudy, with a high near 52. South wind around 7 mph.

    High: 52 °F

    Chance Rain

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 47. South wind around 5 mph becoming calm after midnight.

    Low: 47 °F

    Decreasing
    Clouds

  • Tuesday

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

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Calm wind.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 40.

    Low: 40 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of rain, mainly before 4pm. Cloudy, with a high near 52. South wind around 7 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 47. South wind around 5 mph becoming calm after midnight.
Tuesday
Partly sunny, with a high near 57. Calm wind.
Tuesday Night
Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Wednesday
Partly sunny, with a high near 51. Calm wind.
Wednesday Night
Patchy fog between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Newcastle WA
 47.48°N 122.12°W (Elev. 499 ft)
Last Update:
7:00 am PST Jan 12, 2026
Forecast Valid:
8am PST Jan 12, 2026-6pm PST Jan 18, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation