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

35°F

2°C

Humidity 97%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 07 Dec 01:06 PM PST
Extended Forecast for

10 Miles ENE Mazama WA

  • This Afternoon

    This Afternoon: Snow likely. Mostly cloudy, with a high near 33. Southeast wind around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 3 inches possible.

    High: 33 °F

    Snow Likely

  • Tonight

    Tonight: Rain and snow likely, becoming all snow after 11pm. Mostly cloudy, with a low around 32. Southeast wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow
    Likely then
    Snow Likely

  • Monday

    Monday: Snow likely before 10am, then rain, possibly mixed with snow between 10am and 3pm, then rain after 3pm. High near 37. Southwest wind 3 to 6 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow

  • Monday Night

    Monday Night: Rain before 10pm, then rain and snow likely. Low around 32. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow

  • Tuesday

    Tuesday: A chance of snow before 1pm, then snow likely, possibly mixed with rain. Partly sunny, with a high near 38. West wind 5 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Rain and snow. Low around 32. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 32 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow, becoming all rain after 1pm. High near 39. Chance of precipitation is 90%. 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. 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 7am, then rain and snow likely. Partly sunny, with a high near 38. Chance of precipitation is 60%.

    High: 38 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Snow likely. Mostly cloudy, with a high near 33. Southeast wind around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Rain and snow likely, becoming all snow after 11pm. Mostly cloudy, with a low around 32. Southeast wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
Snow likely before 10am, then rain, possibly mixed with snow between 10am and 3pm, then rain after 3pm. High near 37. Southwest wind 3 to 6 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday Night
Rain before 10pm, then rain and snow likely. Low around 32. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday
A chance of snow before 1pm, then snow likely, possibly mixed with rain. Partly sunny, with a high near 38. West wind 5 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Tuesday Night
Rain and snow. Low around 32. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Rain and snow, becoming all rain after 1pm. High near 39. Chance of precipitation is 90%. 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. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Thursday
A chance of snow before 7am, then rain and snow likely. Partly sunny, with a high near 38. Chance of precipitation is 60%.
Thursday Night
Snow likely, possibly mixed with rain, mainly before 10pm. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 50%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Saturday
Rain and snow likely. Partly sunny, with a high near 40. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles ENE Mazama WA
 48.68°N 120.25°W (Elev. 3435 ft)
Last Update:
1:21 pm PST Dec 7, 2025
Forecast Valid:
1pm PST Dec 7, 2025-6pm PST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation