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

Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Overcast

66°F

19°C

Humidity 69%
Wind Speed SE 4 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 01 Sep 12:53 PM PDT
Extended Forecast for

Newcastle WA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 71. Southwest wind around 8 mph.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. Southwest wind 6 to 8 mph becoming south southeast after midnight.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after 1pm. High near 67. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 52. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 65. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain. Partly sunny, with a high near 66.

    High: 66 °F

    Chance Rain

  • Friday Night

    Friday Night: A slight chance of rain before 11pm. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain after 11am. Mostly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Partly sunny, with a high near 71. Southwest wind around 8 mph.
Tonight
Mostly cloudy, with a low around 56. Southwest wind 6 to 8 mph becoming south southeast after midnight.
Wednesday
Rain, mainly after 1pm. High near 67. South wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 52. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 65. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 52.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 66.
Friday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 51.
Saturday
A slight chance of rain after 11am. Mostly sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
A chance of rain. Partly cloudy, with a low around 54.
Labor Day
A chance of rain. Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Newcastle WA
 47.55°N 122.14°W (Elev. 538 ft)
Last Update:
12:40 pm PDT Sep 1, 2026
Forecast Valid:
1pm PDT Sep 1, 2026-6pm PDT Sep 7, 2026
 
Forecast Discussion
 
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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