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

Joseph State Airport AWOS (KJSY)

Lat: 45.355889°NLon: 117.254083°WElev: 4120.0ft.

Rain

43°F

6°C

Humidity 83%
Wind Speed ENE 4 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 08 Dec 09:35 PM PST
Extended Forecast for

17 Miles NNW Halfway OR

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Steady temperature around 33. Breezy, with a west wind 20 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.

    Low: 33 °F

    Heavy Snow
    and Breezy

  • Tuesday

    Tuesday: Snow. Temperature falling to around 29 by 1pm. West wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 32 °F⇓

    Snow

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. Snow level rising to 9100 feet after midnight. Temperature rising to around 35 by 1am. Southwest wind 10 to 14 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 29 °F⇑

    Rain/Snow

  • Wednesday

    Wednesday: Rain before 1pm, then rain likely, possibly mixed with snow. Snow level 9100 feet lowering to 8500 feet in the afternoon . High near 35. Southwest wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 35 °F

    Rain then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain and snow. Snow level 8100 feet. Mostly cloudy, with a low around 33. West wind around 11 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. Snow level 8000 feet. Mostly cloudy, with a high near 33. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow, mainly before 10pm. Snow level 8100 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Steady temperature around 33. Breezy, with a west wind 20 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Tuesday
Snow. Temperature falling to around 29 by 1pm. West wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Tuesday Night
Snow before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. Snow level rising to 9100 feet after midnight. Temperature rising to around 35 by 1am. Southwest wind 10 to 14 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Rain before 1pm, then rain likely, possibly mixed with snow. Snow level 9100 feet lowering to 8500 feet in the afternoon . High near 35. Southwest wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
A chance of rain and snow. Snow level 8100 feet. Mostly cloudy, with a low around 33. West wind around 11 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday
A chance of rain and snow before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. Snow level 8000 feet. Mostly cloudy, with a high near 33. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of rain and snow, mainly before 10pm. Snow level 8100 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around 26.
Sunday
A chance of snow. Partly sunny, with a high near 30.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 25.
Monday
Snow likely. Mostly cloudy, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles NNW Halfway OR
 45.11°N 117.25°W (Elev. 7854 ft)
Last Update:
9:37 pm PST Dec 8, 2025
Forecast Valid:
9pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation