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

SISTERS (K6K5)

Lat: 44.30445°NLon: 121.53909°WElev: 3168.0ft.

NA

55°F

13°C

Humidity 66%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 45°F (7°C)
Visibility NA
Last update 09 Dec 08:55 AM PST
Extended Forecast for

Mt Jefferson OR

  • Today

    Today: Snow before 1pm, then rain, possibly mixed with snow. The rain and snow could be heavy at times.  Snow level 9300 feet. High near 36. Windy, with a west wind 30 to 32 mph, with gusts as high as 44 mph.  Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 7 inches possible.

    High: 36 °F

    Windy. Heavy
    Snow then
    Rain/Snow

  • Tonight

    Tonight: Snow, possibly mixed with rain. The rain could be heavy at times.  Snow level 9600 feet. Low around 32. Very windy, with a west wind 44 to 47 mph, with gusts as high as 55 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Rain/Snow and
    Very Windy

  • Wednesday

    Wednesday: Snow.  Temperature falling to around 32 by 2pm. Very windy, with a west wind 36 to 46 mph, with gusts as high as 55 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow and Very
    Windy

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 10pm.  Mostly cloudy, with a low around 30. Windy, with a west wind 33 to 36 mph, with gusts as high as 43 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Snow Likely
    and Windy

  • Thursday

    Thursday: A 50 percent chance of snow, mainly before 4pm.  Mostly cloudy, with a high near 33. Breezy, with a west wind 23 to 28 mph decreasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.  New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before 10pm.  Partly cloudy, with a low around 29.

    Low: 29 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Today
Snow before 1pm, then rain, possibly mixed with snow. The rain and snow could be heavy at times. Snow level 9300 feet. High near 36. Windy, with a west wind 30 to 32 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 7 inches possible.
Tonight
Snow, possibly mixed with rain. The rain could be heavy at times. Snow level 9600 feet. Low around 32. Very windy, with a west wind 44 to 47 mph, with gusts as high as 55 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday
Snow. Temperature falling to around 32 by 2pm. Very windy, with a west wind 36 to 46 mph, with gusts as high as 55 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 30. Windy, with a west wind 33 to 36 mph, with gusts as high as 43 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
A 50 percent chance of snow, mainly before 4pm. Mostly cloudy, with a high near 33. Breezy, with a west wind 23 to 28 mph decreasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph. New snow accumulation of less than a half inch possible.
Thursday Night
A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
Snow likely, mainly after 4am. Mostly cloudy, with a low around 26. Breezy.
Sunday
Snow likely. Mostly cloudy, with a high near 28. Breezy.
Sunday Night
Snow likely. Mostly cloudy, with a low around 28.
Monday
Snow. The snow could be heavy at times. Mostly cloudy, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
Mt Jefferson OR
 44.67°N 121.81°W (Elev. 9183 ft)
9:15 am PST Dec 9, 2025
10am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

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