Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Hydrologic Outlook

Current conditions at

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

33°F

1°C

Humidity	100%
Wind Speed	E 2 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Last update	07 Dec 05:06 PM PST

More Information:

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

Extended Forecast for

4 Miles WSW Winthrop WA

This Afternoon
High: 32 °F
Snow Likely
Tonight
Low: 31 °F
Rain/Snow
Likely then
Snow Likely
Monday
High: 37 °F
Rain/Snow
then Rain
Monday Night
Low: 33 °F
Rain then
Rain/Snow
Likely
Tuesday
High: 40 °F
Chance
Rain/Snow
then Rain
Tuesday Night
Low: 33 °F
Rain
Wednesday
High: 41 °F
Rain
Wednesday Night
Low: 31 °F
Chance
Rain/Snow
Thursday
High: 38 °F
Chance
Rain/Snow

Detailed Forecast

This Afternoon

Snow likely. Mostly cloudy, with a high near 32. Light southeast wind. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.

Tonight

Rain and snow likely, becoming all snow after 11pm, then gradually ending. Mostly cloudy, with a low around 31. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Monday

Snow likely before 10am, then rain, possibly mixed with snow between 10am and noon, then rain after noon. High near 37. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

Monday Night

Rain before 1am, then rain likely, possibly mixed with snow between 1am and 4am, then a slight chance of rain after 4am. Low around 33. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Tuesday

A slight chance of rain before 7am, then a slight chance of rain and snow between 7am and 10am, then rain after 10am. High near 40. West wind around 7 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tuesday Night

Rain. Low around 33. Chance of precipitation is 90%.

Wednesday

Rain. High near 41. Chance of precipitation is 80%.

Wednesday Night

A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

Thursday

A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.

Thursday Night

A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.

Friday

A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 40%.