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

NCSB (NCSW1)

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

NA

34°F

1°C

Humidity 100%
Wind Speed NNW 3 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 07 Dec 03:06 PM PST
Extended Forecast for

6 Miles SSE Mazama WA

  • This Afternoon

    This Afternoon: Snow likely. Mostly cloudy, with a high near 32. East wind around 6 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 32 °F

    Snow Likely

  • Tonight

    Tonight: Snow likely, mainly before 4am. Mostly cloudy, with a low around 29. Southeast wind 7 to 9 mph becoming west in the evening. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: Rain, possibly mixed with snow, becoming all rain after 2pm. High near 36. Southeast wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow

  • Monday Night

    Monday Night: Rain before 10pm, then snow likely, possibly mixed with rain. Low around 29. Breezy, with a west wind 16 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Rain/Snow and
    Breezy

  • Tuesday

    Tuesday: Snow, mainly after 4pm. High near 36. West wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Chance Snow
    then Snow

  • Tuesday Night

    Tuesday Night: Snow before 1am, then rain and snow. Low around 29. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 29 °F

    Snow then
    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow. High near 37. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow likely, possibly mixed with rain before 10pm, then a chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.

    Low: 28 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Thursday

    Thursday: A chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 35. Chance of precipitation is 50%.

    High: 35 °F

    Chance Snow
    then Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Snow likely. Mostly cloudy, with a high near 32. East wind around 6 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow likely, mainly before 4am. Mostly cloudy, with a low around 29. Southeast wind 7 to 9 mph becoming west in the evening. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
Rain, possibly mixed with snow, becoming all rain after 2pm. High near 36. Southeast wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Monday Night
Rain before 10pm, then snow likely, possibly mixed with rain. Low around 29. Breezy, with a west wind 16 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday
Snow, mainly after 4pm. High near 36. West wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow before 1am, then rain and snow. Low around 29. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Rain and snow. High near 37. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow likely, possibly mixed with rain before 10pm, then a chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Thursday
A chance of snow before 1pm, then a chance of rain and snow. Partly sunny, with a high near 35. Chance of precipitation is 50%.
Thursday Night
Snow likely, possibly mixed with rain, becoming all snow after 10pm. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Saturday
Rain and snow likely. Partly sunny, with a high near 38. Chance of precipitation is 60%.
Saturday Night
Rain and snow likely. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Sunday
A chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Mazama WA
 48.54°N 120.37°W (Elev. 3986 ft)
Last Update:
2:48 pm PST Dec 7, 2025
Forecast Valid:
3pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation