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

34°F

1°C

Humidity	86%
Wind Speed	S 3 MPH
Barometer	30.18 in (1022.01 mb)
Dewpoint	30°F (-1°C)
Visibility	10.00 mi
Last update	23 Mar 07:00 AM PDT

More Information:

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

Extended Forecast for

Newcastle WA

Today
High: 51 °F
Increasing
Clouds
Tonight
Low: 42 °F
Cloudy then
Chance Rain
Tuesday
High: 51 °F
Rain
Tuesday Night
Low: 40 °F
Rain then
Rain Likely
Wednesday
High: 48 °F
Rain
Wednesday Night
Low: 36 °F
Rain/Snow
Likely then
Chance
Rain/Snow
Thursday
High: 51 °F
Chance
Rain/Snow
then Slight
Chance Rain
Thursday Night
Low: 33 °F
Mostly Clear
Friday
High: 57 °F
Sunny

Detailed Forecast

Today

Increasing clouds, with a high near 51. Light and variable wind becoming north northwest around 6 mph in the morning.

Tonight

A 40 percent chance of rain, mainly after 3am. Cloudy, with a low around 42. North wind around 5 mph becoming calm in the evening.

Tuesday

Rain. High near 51. South wind 5 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Tuesday Night

Rain. Low around 40. South southwest wind 14 to 16 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 48. South southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday Night

Rain likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 36. 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 51. Chance of precipitation is 30%. Little or no snow accumulation expected.

Thursday Night

Mostly clear, with a low around 33.

Friday

Sunny, with a high near 57.

Friday Night

Partly cloudy, with a low around 39.

Saturday

Partly sunny, with a high near 60.

Saturday Night

Mostly cloudy, with a low around 43.

Sunday

A chance of rain. Mostly cloudy, with a high near 58.