Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

52°F

11°C

Humidity 62%
Wind Speed SSW 10 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 13 Apr 09:15 AM PDT
Extended Forecast for

3 Miles E Newcastle WA

  • Today

    Today: A 50 percent chance of rain, mainly between 10am and 3pm.  Mostly cloudy, with a high near 49. Southwest wind 10 to 14 mph.

    High: 49 °F

    Chance Rain

  • Tonight

    Tonight: A chance of rain before 11pm, then a chance of rain after 1am.  Mostly cloudy, with a low around 41. South southwest wind around 14 mph.  Chance of precipitation is 50%.

    Low: 41 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain.  High near 45. South southwest wind 14 to 17 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain before 2am, then rain likely, possibly mixed with snow.  Low around 37. South southwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 28 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 37 °F

    Rain then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Rain, possibly mixed with snow, becoming all rain after 2pm. Some thunder is also possible.  High near 46. West southwest wind around 8 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain likely before 11pm, then a slight chance of rain and snow.  Mostly cloudy, with a low around 34. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

Detailed Forecast

Today
A 50 percent chance of rain, mainly between 10am and 3pm. Mostly cloudy, with a high near 49. Southwest wind 10 to 14 mph.
Tonight
A chance of rain before 11pm, then a chance of rain after 1am. Mostly cloudy, with a low around 41. South southwest wind around 14 mph. Chance of precipitation is 50%.
Tuesday
Rain. High near 45. South southwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain before 2am, then rain likely, possibly mixed with snow. Low around 37. South southwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday
Rain, possibly mixed with snow, becoming all rain after 2pm. Some thunder is also possible. High near 46. West southwest wind around 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Rain likely before 11pm, then a slight chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Partly sunny, with a high near 52.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 57.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 44.
Sunday
A chance of rain. Mostly cloudy, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Newcastle WA
 47.53°N 122.11°W (Elev. 1237 ft)
11:27 pm PDT Apr 12, 2026
9am PDT Apr 13, 2026-6pm PDT Apr 19, 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