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

48°F

9°C

Humidity 69%
Wind Speed W 3 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 09 Dec 04:15 AM PST
Extended Forecast for

19 Miles ESE Union OR

  • Overnight

    Overnight: Snow.  Steady temperature around 33. West wind around 18 mph, with gusts as high as 34 mph.  Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 33 °F

    Snow

  • Tuesday

    Tuesday: Snow. The snow could be heavy at times.  High near 33. West wind 7 to 16 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 33 °F

    Heavy Snow

  • Tuesday Night

    Tuesday Night: Rain, possibly mixed with snow, becoming all rain after 1am. The snow could be heavy at times.  Snow level 8600 feet rising to 9400 feet after midnight. Temperature rising to around 35 by 4am. West wind 8 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 30 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain likely before 10am, then a chance of rain and snow.  Snow level 9500 feet lowering to 8400 feet in the afternoon . Mostly cloudy, with a high near 35. Southwest wind around 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 35 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly before 10pm.  Mostly cloudy, with a low around 32. West wind around 9 mph.

    Low: 32 °F

    Chance Snow

  • Thursday

    Thursday: A 40 percent chance of snow.  Mostly cloudy, with a high near 34.

    High: 34 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow before 10pm.  Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Friday Night

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

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Snow. Steady temperature around 33. West wind around 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 3 inches possible.
Tuesday
Snow. The snow could be heavy at times. High near 33. West wind 7 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Tuesday Night
Rain, possibly mixed with snow, becoming all rain after 1am. The snow could be heavy at times. Snow level 8600 feet rising to 9400 feet after midnight. Temperature rising to around 35 by 4am. West wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Rain likely before 10am, then a chance of rain and snow. Snow level 9500 feet lowering to 8400 feet in the afternoon . Mostly cloudy, with a high near 35. Southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 32. West wind around 9 mph.
Thursday
A 40 percent chance of snow. Mostly cloudy, with a high near 34.
Thursday Night
A 30 percent chance of snow before 10pm. Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 36.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 35.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A chance of snow. Partly sunny, with a high near 29.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 26.
Monday
Snow likely. Mostly cloudy, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles ESE Union OR
 45.13°N 117.47°W (Elev. 8399 ft)
4:20 am PST Dec 9, 2025
4am 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