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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Hailey, Friedman Memorial Airport (KSUN)

Lat: 43.5°NLon: 114.3°WElev: 5318.0ft.

Clear

19°F

-7°C

Humidity 85%
Wind Speed NW 9 MPH
Barometer 30.51 in (1033.19 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 30 Dec 07:47 AM MST
Extended Forecast for

Sun Valley ID

  • Today

    Today: Sunny, with a high near 38. Light and variable wind.

    High: 38 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 22. Light north wind.

    Low: 22 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 41. Light and variable wind.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27. Light north wind.

    Low: 27 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A chance of snow before 2pm, then a chance of rain and snow. Cloudy, with a high near 37. Light and variable wind. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow before 2am, then a chance of rain. Snow level 7200 feet. Mostly cloudy, with a low around 27. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance
    Rain/Snow

  • Friday

    Friday: A 40 percent chance of rain. Snow level 7400 feet. Mostly cloudy, with a high near 40.

    High: 40 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain before 2am, then rain likely, possibly mixed with snow. Snow level 7300 feet. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.

    Low: 28 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Saturday

    Saturday: Rain and snow likely, becoming all snow after 8am. Mostly cloudy, with a high near 37. Chance of precipitation is 60%.

    High: 37 °F

    Rain/Snow
    Likely then
    Chance Snow

Detailed Forecast

Today
Sunny, with a high near 38. Light and variable wind.
Tonight
Increasing clouds, with a low around 22. Light north wind.
Wednesday
Partly sunny, with a high near 41. Light and variable wind.
Wednesday Night
Mostly cloudy, with a low around 27. Light north wind.
New Year's Day
A chance of snow before 2pm, then a chance of rain and snow. Cloudy, with a high near 37. Light and variable wind. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of rain and snow before 2am, then a chance of rain. Snow level 7200 feet. Mostly cloudy, with a low around 27. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
A 40 percent chance of rain. Snow level 7400 feet. Mostly cloudy, with a high near 40.
Friday Night
A chance of rain before 2am, then rain likely, possibly mixed with snow. Snow level 7300 feet. Mostly cloudy, with a low around 28. Chance of precipitation is 60%.
Saturday
Rain and snow likely, becoming all snow after 8am. Mostly cloudy, with a high near 37. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 34.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 16.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sun Valley ID
 43.69°N 114.33°W (Elev. 6385 ft)
Last Update:
4:31 am MST Dec 30, 2025
Forecast Valid:
8am MST Dec 30, 2025-6pm MST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation