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

34°F

1°C

Humidity 97%
Wind Speed NW 4 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill30°F (-1°C)
Last update 09 Dec 04:06 AM PST
Extended Forecast for

3 Miles SW Mazama WA

  • Overnight

    Overnight: A 20 percent chance of snow. Partly cloudy, with a low around 33. West wind around 17 mph, with gusts as high as 28 mph.

    Low: 33 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A slight chance of snow before 7am, then a chance of rain and snow after 1pm. Partly sunny, with a high near 37. West wind 8 to 13 mph becoming light and variable in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow, becoming all rain after 3am. Temperature falling to near 31 by 9pm, then rising to around 38 during the remainder of the night. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 31 °F⇑

    Rain/Snow

  • Wednesday

    Wednesday: Rain. High near 42. West wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 42 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain before 1am, then rain, possibly mixed with snow. Low around 37. West wind around 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 37 °F

    Rain then
    Rain/Snow

  • Thursday

    Thursday: Rain, possibly mixed with snow before 1pm, then rain likely between 1pm and 4pm, then rain likely, possibly mixed with snow after 4pm. High near 40. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow

  • 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: A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.

    High: 41 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.

    Low: 35 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
A 20 percent chance of snow. Partly cloudy, with a low around 33. West wind around 17 mph, with gusts as high as 28 mph.
Tuesday
A slight chance of snow before 7am, then a chance of rain and snow after 1pm. Partly sunny, with a high near 37. West wind 8 to 13 mph becoming light and variable in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
Tuesday Night
Rain and snow, becoming all rain after 3am. Temperature falling to near 31 by 9pm, then rising to around 38 during the remainder of the night. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Rain. High near 42. West wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday Night
Rain before 1am, then rain, possibly mixed with snow. Low around 37. West wind around 6 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Rain, possibly mixed with snow before 1pm, then rain likely between 1pm and 4pm, then rain likely, possibly mixed with snow after 4pm. High near 40. Chance of precipitation is 80%. Little or no snow accumulation expected.
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
A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 41. Chance of precipitation is 60%.
Friday Night
A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Saturday
A chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 40%.
Saturday Night
Rain and snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Sunday
Rain and snow likely. Mostly cloudy, with a high near 38. Chance of precipitation is 70%.
Sunday Night
Rain and snow likely. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Monday
Rain and snow. High near 39. Chance of precipitation is 80%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Mazama WA
 48.57°N 120.47°W (Elev. 3199 ft)
Last Update:
2:52 am PST Dec 9, 2025
Forecast Valid:
5am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation