Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Winchester (ITD41)

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

NA

24°F

-4°C

Humidity 96%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility 1.24 mi
Last update 20 Jan 07:30 PM PST
Extended Forecast for

Winchester ID

  • Tonight

    Tonight: Partly cloudy, with a low around 22. Light southwest wind.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36. Light and variable wind.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 34. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 34 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. Light southwest wind.
Wednesday
Mostly sunny, with a high near 36. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 22. Calm wind.
Thursday
Partly sunny, with a high near 34. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 18. Calm wind.
Friday
Mostly sunny, with a high near 32.
Friday Night
Mostly clear, with a low around 16.
Saturday
Sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 17.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
A 10 percent chance of snow. Mostly cloudy, with a low around 23.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 39.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Winchester ID
 46.24°N 116.62°W (Elev. 3950 ft)
3:02 pm PST Jan 20, 2026
7pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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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