Critical Fire Weather in the Plains; Severe Thunderstorms in the Upper Mississippi Valley and Great Lakes

Anomalously warm, dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the Intermountain West into the central and southern Plains today. Strong to severe thunderstorms are possible across portions of the upper Mississippi River Valley to the Great Lakes tonight through the day Tuesday. Damaging gusts, hail, and heavy rainfall are likely. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

37°F

3°C

Humidity 100%
Wind Speed NNW 5 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 37°F (3°C)
Visibility 9.00 mi
Wind Chill33°F (1°C)
Last update 30 Mar 10:05 AM PDT
Extended Forecast for

Newcastle WA

  • Today

    Today: Sunny, with a high near 48. North wind 3 to 8 mph.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. North wind 3 to 7 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. Light and variable wind becoming east around 5 mph in the afternoon.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm.  Mostly cloudy, with a low around 41. South wind 3 to 6 mph.

    Low: 41 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain.  High near 50. Southeast wind around 7 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain, mainly before 11pm, then showers likely after midnight.  Low around 39. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Rain then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 11am.  Mostly cloudy, with a high near 51. Chance of precipitation is 60%.

    High: 51 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers before 11pm.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 48. North wind 3 to 8 mph.
Tonight
Partly cloudy, with a low around 33. North wind 3 to 7 mph.
Tuesday
Partly sunny, with a high near 54. Light and variable wind becoming east around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 41. South wind 3 to 6 mph.
Wednesday
Rain. High near 50. Southeast wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain, mainly before 11pm, then showers likely after midnight. Low around 39. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely, mainly before 11am. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers before 11pm. Mostly cloudy, with a low around 39.
Friday
Partly sunny, with a high near 56.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.53°N 122.14°W (Elev. 873 ft)
5:33 am PDT Mar 30, 2026
10am PDT Mar 30, 2026-6pm PDT Apr 5, 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