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

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

37°F

3°C

Humidity 85%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 09 Dec 03:06 PM PST
Extended Forecast for

Mazama WA

  • This Afternoon

    This Afternoon: Rain and snow. Steady temperature around 39. Calm wind. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow

  • Tonight

    Tonight: Rain, possibly mixed with snow, becoming all rain after 2am. Temperature falling to near 34 by 9pm, then rising to around 39 during the remainder of the night. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 34 °F⇑

    Rain/Snow

  • Wednesday

    Wednesday: Rain. High near 45. Northwest wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 45 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 38. West wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 38 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 10am. Partly sunny, with a high near 45. West wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain likely, possibly mixed with snow, becoming all rain after 10am. Mostly cloudy, with a high near 45. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain. Partly sunny, with a high near 43.

    High: 43 °F

    Chance Rain

Detailed Forecast

This Afternoon
Rain and snow. Steady temperature around 39. Calm wind. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Rain, possibly mixed with snow, becoming all rain after 2am. Temperature falling to near 34 by 9pm, then rising to around 39 during the remainder of the night. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday
Rain. High near 45. Northwest wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday Night
Rain. Low around 38. West wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday
Rain likely, mainly before 10am. Partly sunny, with a high near 45. West wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 50%. Little or no snow accumulation expected.
Friday
Rain likely, possibly mixed with snow, becoming all rain after 10am. Mostly cloudy, with a high near 45. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 43.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Sunday
Rain likely. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Monday
Rain. High near 42. Chance of precipitation is 80%.
Monday Night
Rain. Low around 33. Chance of precipitation is 90%.
Tuesday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 42. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mazama WA
 48.62°N 120.45°W (Elev. 2343 ft)
Last Update:
3:08 pm PST Dec 9, 2025
Forecast Valid:
4pm PST Dec 9, 2025-6pm PST Dec 16, 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