Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

34°F

1°C

Humidity 100%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 08 Dec 09:06 PM PST
Extended Forecast for

15 Miles N Mazama WA

  • Tonight

    Tonight: Snow, mainly before 1am. The snow could be heavy at times.  Low around 20. Windy, with a west wind 31 to 34 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. Total nighttime snow accumulation of 7 to 11 inches possible.

    Low: 20 °F

    Heavy Snow
    and Windy

  • Tuesday

    Tuesday: A slight chance of snow before 7am, then snow likely after 1pm. The snow could be heavy at times.  Mostly cloudy, with a high near 24. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 37 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 24 °F

    Breezy.
    Slight Chance
    Snow then
    Heavy Snow

  • Tuesday Night

    Tuesday Night: Snow. The snow could be heavy at times.  Temperature rising to around 30 by 4am. Breezy, with a southwest wind 15 to 22 mph.  Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.

    Low: 21 °F

    Heavy Snow
    and Breezy

  • Wednesday

    Wednesday: Snow. The snow could be heavy at times.  High near 30. Windy, with a west wind 17 to 26 mph, with gusts as high as 36 mph.  Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

    High: 30 °F

    Heavy Snow
    and Windy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times.  Low around 24. Breezy, with a west wind 17 to 20 mph.  Chance of precipitation is 80%. New snow accumulation of 6 to 10 inches possible.

    Low: 24 °F

    Heavy Snow
    and Breezy

  • Thursday

    Thursday: Snow.  High near 26. Breezy.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 26 °F

    Snow and
    Breezy

  • Thursday Night

    Thursday Night: Snow likely.  Mostly cloudy, with a low around 24. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Snow Likely

  • Friday

    Friday: Snow likely, mainly before 10am.  Mostly cloudy, with a high near 30. Chance of precipitation is 60%.

    High: 30 °F

    Snow Likely

  • Friday Night

    Friday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 26.

    Low: 26 °F

    Chance Snow

Detailed Forecast

Tonight
Snow, mainly before 1am. The snow could be heavy at times. Low around 20. Windy, with a west wind 31 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 7 to 11 inches possible.
Tuesday
A slight chance of snow before 7am, then snow likely after 1pm. The snow could be heavy at times. Mostly cloudy, with a high near 24. Breezy, with a west wind 18 to 23 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow. The snow could be heavy at times. Temperature rising to around 30 by 4am. Breezy, with a southwest wind 15 to 22 mph. Chance of precipitation is 100%. New snow accumulation of 9 to 13 inches possible.
Wednesday
Snow. The snow could be heavy at times. High near 30. Windy, with a west wind 17 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 24. Breezy, with a west wind 17 to 20 mph. Chance of precipitation is 80%. New snow accumulation of 6 to 10 inches possible.
Thursday
Snow. High near 26. Breezy. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 24. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Snow likely, mainly before 10am. Mostly cloudy, with a high near 30. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 26.
Saturday
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Saturday Night
Snow. Low around 23. Breezy. Chance of precipitation is 80%.
Sunday
Snow. High near 24. Breezy. Chance of precipitation is 80%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 70%.
Monday
Snow. High near 26. Breezy. Chance of precipitation is 80%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles N Mazama WA
 48.82°N 120.48°W (Elev. 7648 ft)
8:22 pm PST Dec 8, 2025
9pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database