Record Heat Remains in Place This Week; Severe Thunderstorms Possible Thursday

Record warmth will persist across portions of California, the Southwest U.S., the central Great Basin and return back to areas of the central/southern Plains and mid-lower Mississippi Valley this week. Over 200 new record high temperatures are forecast. Severe thunderstorms are being outlooked on Thursday over the Midwest. Read More >

Current conditions at

Renton Municipal Airport (KRNT)

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

Clear

37°F

3°C

Humidity	86%
Wind Speed	N 0 MPH
Barometer	30.18 in (1022.01 mb)
Dewpoint	34°F (1°C)
Visibility	10.00 mi
Last update	23 Mar 09:00 AM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Newcastle WA

Today
High: 54 °F
Increasing
Clouds
Tonight
Low: 43 °F
Cloudy then
Chance Rain
Tuesday
High: 54 °F
Rain
Tuesday Night
Low: 42 °F
Rain then
Rain Likely
Wednesday
High: 51 °F
Rain
Wednesday Night
Low: 38 °F
Rain/Snow
Likely then
Chance
Rain/Snow
Thursday
High: 54 °F
Chance
Rain/Snow
then Slight
Chance Rain
Thursday Night
Low: 35 °F
Mostly Clear
Friday
High: 60 °F
Sunny

Detailed Forecast

Today

Increasing clouds, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.

Tonight

A 40 percent chance of rain, mainly after 3am. Cloudy, with a low around 43. Light and variable wind.

Tuesday

Rain. High near 54. Light south southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Tuesday Night

Rain. Low around 42. South southwest wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday

Rain. High near 51. South southwest wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night

Rain likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 38. Chance of precipitation is 70%. Little or no snow accumulation expected.

Thursday

A chance of rain and snow before 11am, then a slight chance of rain. Mostly sunny, with a high near 54. Chance of precipitation is 30%. Little or no snow accumulation expected.

Thursday Night

Mostly clear, with a low around 35.

Friday

Sunny, with a high near 60.

Friday Night

Partly cloudy, with a low around 39.

Saturday

Partly sunny, with a high near 62.

Saturday Night

Mostly cloudy, with a low around 44.

Sunday

A chance of rain. Mostly cloudy, with a high near 61.