Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Winchester (ITD41)

Lat: 46.25521°NLon: 116.6051°WElev: 3761.0ft.

NA

38°F

3°C

Humidity 97%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility 1.24 mi
Last update 09 Dec 06:00 PM PST
Extended Forecast for

10 Miles SSW Winchester ID

  • Tonight

    Tonight: Rain, possibly mixed with snow, becoming all rain after 8pm.  Snow level 5500 feet rising to 9300 feet after midnight. Temperature falling to near 36 by 9pm, then rising to around 44 during the remainder of the night. Southwest wind 5 to 10 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow
    then Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 50. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 36 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Breezy. Rain
    Likely then
    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 10pm.  Mostly cloudy, with a low around 42. Southwest wind 11 to 15 mph, with gusts as high as 24 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 10am.  Cloudy, with a high near 47. West wind 10 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before 4am.  Cloudy, with a low around 41. Southwest wind around 7 mph, with gusts as high as 18 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain before 10am.  Snow level 6500 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 49.

    High: 49 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain after 10pm.  Snow level 6500 feet. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain, possibly mixed with snow, becoming all rain after 8pm. Snow level 5500 feet rising to 9300 feet after midnight. Temperature falling to near 36 by 9pm, then rising to around 44 during the remainder of the night. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 50. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of rain after 10pm. Mostly cloudy, with a low around 42. Southwest wind 11 to 15 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain likely, mainly after 10am. Cloudy, with a high near 47. West wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 50 percent chance of rain, mainly before 4am. Cloudy, with a low around 41. Southwest wind around 7 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain before 10am. Snow level 6500 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 49.
Friday Night
A 20 percent chance of rain after 10pm. Snow level 6500 feet. Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
A 20 percent chance of rain. Snow level 5900 feet. Mostly cloudy, with a high near 44.
Sunday Night
A 20 percent chance of rain. Snow level 6000 feet. Mostly cloudy, with a low around 34.
Monday
A 40 percent chance of rain. Snow level 6300 feet. Mostly cloudy, with a high near 44.
Monday Night
Rain likely. Snow level 6500 feet. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.
Tuesday
Rain and snow likely. Snow level 5400 feet. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SSW Winchester ID
 46.1°N 116.68°W (Elev. 4600 ft)
5:48 pm PST Dec 9, 2025
6pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

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