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

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

SISTERS (K6K5)

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

NA

54°F

12°C

Humidity 66%
Wind Speed NA 4 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 43°F (6°C)
Visibility NA
Last update 09 Dec 01:55 AM PST
Extended Forecast for

Mount Bachelor OR

  • Overnight

    Overnight: Rain. Steady temperature around 38. Breezy, with a west wind around 23 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain. High near 41. West wind 11 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 41 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 39. West wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain Likely

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 43. West wind 10 to 14 mph, with gusts as high as 29 mph.

    High: 43 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 34. West wind around 9 mph, with gusts as high as 21 mph.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 44.

    High: 44 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain. Steady temperature around 38. Breezy, with a west wind around 23 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain. High near 41. West wind 11 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 39. West wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 40 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 43. West wind 10 to 14 mph, with gusts as high as 29 mph.
Wednesday Night
A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 34. West wind around 9 mph, with gusts as high as 21 mph.
Thursday
A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 32.
Friday
Mostly sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 34.
Saturday
A slight chance of rain after 4pm. Snow level 6300 feet rising to 6900 feet in the afternoon. Mostly sunny, with a high near 48.
Saturday Night
A chance of rain and snow. Snow level 6300 feet. Mostly cloudy, with a low around 31.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 38.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 33.
Monday
Rain and snow. Snow level 6600 feet rising to 7400 feet in the afternoon. Mostly cloudy, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Bachelor OR
 44.01°N 121.68°W (Elev. 6207 ft)
Last Update:
2:16 am PST Dec 9, 2025
Forecast Valid:
2am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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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