


Current conditions at
Renton Municipal Airport (KRNT)
Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.
Clear
66°F
19°C
Humidity | 63% |
Wind Speed | S 8 MPH |
Barometer | 29.98 in (1015.24 mb) |
Dewpoint | 54°F (12°C) |
Visibility | 10.00 mi |
Last update | 20 Sep 11:05 AM PDT |
Extended Forecast for
Newcastle WA
Today
High: 76 °F
Haze
Tonight
Low: 58 °F
Mostly Cloudy
then RainSunday
High: 66 °F
Showers then
Chance
ShowersSunday Night
Low: 51 °F
Partly Cloudy
Monday
High: 70 °F
Sunny
Monday Night
Low: 52 °F
Mostly Clear
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 53 °F
Mostly Clear
Wednesday
High: 73 °F
Mostly Sunny
Detailed Forecast
Today
Widespread haze between noon and 1pm. Sunny, with a high near 76. Southwest wind around 7 mph.
Tonight
Rain, mainly after 1am. Low around 58. South wind 8 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then a chance of rain after 2pm. High near 66. South southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 51. North northeast wind around 5 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 70. Light and variable wind.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 53.
Friday
A slight chance of rain. Partly sunny, with a high near 69.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Newcastle WA
47.52°N 122.17°W (Elev. 400 ft)
47.52°N 122.17°W (Elev. 400 ft)
8:01 am PDT Sep 20, 2025
11am PDT Sep 20, 2025-6pm PDT Sep 26, 2025