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

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

Current conditions at

MANSON (MASW)

Lat: 47.91694°NLon: 120.12444°WElev: 1972.0ft.

NA

36°F

2°C

Humidity 97%
Wind Speed NE 1 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 07 Dec 05:00 PM PST
Extended Forecast for

6 Miles N Chelan WA

Flood Watch December 8, 07:00am until December 9, 04:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 20 percent chance of snow. Snow level 4100 feet. Mostly sunny, with a high near 35. Southwest wind around 6 mph.

    High: 35 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A 20 percent chance of rain between 1am and 4am. Snow level 4000 feet. Mostly cloudy, with a steady temperature around 32. Southwest wind around 8 mph.

    Low: 32 °F

    Slight Chance
    Rain

  • Monday

    Monday: A chance of snow before 10am, then rain. Snow level 3900 feet rising to 7200 feet in the afternoon. High near 38. Southwest wind 6 to 10 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow
    Likely then
    Rain

  • Monday Night

    Monday Night: Rain before 1am, then rain likely, possibly mixed with snow between 1am and 4am, then rain likely after 4am. Snow level 7000 feet lowering to 4800 feet after midnight . Low around 32. West wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain, possibly mixed with snow before 5pm, then a chance of snow. High near 38. Southwest wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow
    then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then rain and snow between 10pm and 4am, then rain after 4am. Snow level 3900 feet rising to 4600 feet after midnight. Low around 31. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 31 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain, possibly mixed with snow before 1pm, then rain likely between 1pm and 4pm, then a chance of rain and snow after 4pm. Snow level 5200 feet. High near 39. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 4am, then a chance of snow. Snow level 4500 feet. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.

    Low: 30 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow before 10am, then a chance of rain and snow. Snow level 4300 feet. Partly sunny, with a high near 36. Chance of precipitation is 40%.

    High: 36 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Snow level 4100 feet. Mostly sunny, with a high near 35. Southwest wind around 6 mph.
Tonight
A 20 percent chance of rain between 1am and 4am. Snow level 4000 feet. Mostly cloudy, with a steady temperature around 32. Southwest wind around 8 mph.
Monday
A chance of snow before 10am, then rain. Snow level 3900 feet rising to 7200 feet in the afternoon. High near 38. Southwest wind 6 to 10 mph. 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 rain likely after 4am. Snow level 7000 feet lowering to 4800 feet after midnight . Low around 32. West wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tuesday
Rain, possibly mixed with snow before 5pm, then a chance of snow. High near 38. Southwest wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow before 10pm, then rain and snow between 10pm and 4am, then rain after 4am. Snow level 3900 feet rising to 4600 feet after midnight. Low around 31. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Rain, possibly mixed with snow before 1pm, then rain likely between 1pm and 4pm, then a chance of rain and snow after 4pm. Snow level 5200 feet. High near 39. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain and snow before 4am, then a chance of snow. Snow level 4500 feet. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Thursday
A chance of snow before 10am, then a chance of rain and snow. Snow level 4300 feet. Partly sunny, with a high near 36. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow. Snow level 4800 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Friday
A slight chance of rain and snow. Snow level 5400 feet. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.
Friday Night
A slight chance of rain and snow. Snow level 5600 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Saturday
A chance of rain and snow. Snow level 5100 feet. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Saturday Night
A chance of rain and snow. Snow level 4700 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Sunday
A chance of rain and snow. Snow level 4200 feet. Partly sunny, with a high near 37. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Chelan WA
 47.95°N 120.04°W (Elev. 3412 ft)
Last Update:
2:48 pm PST Dec 7, 2025
Forecast Valid:
5pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation