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

Ririe (ITD18)

Lat: 43.6111°NLon: 111.70531°WElev: 5106.0ft.

NA

29°F

-2°C

Humidity 64%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility 1.24 mi
Last update 21 Jan 01:30 PM MST
Extended Forecast for

Swan Valley ID

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 30. Light east wind.

    High: 30 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 14. East wind 3 to 6 mph.

    Low: 14 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 30. East southeast wind around 6 mph becoming calm  in the morning.

    High: 30 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 17. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 17 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after 11am.  Partly sunny, with a high near 31. East southeast wind around 6 mph becoming northwest in the afternoon.

    High: 31 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: Mostly clear, with a low around 2.

    Low: 2 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 25.

    High: 25 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 30. Light east wind.
Tonight
Mostly cloudy, with a low around 14. East wind 3 to 6 mph.
Thursday
Mostly cloudy, with a high near 30. East southeast wind around 6 mph becoming calm in the morning.
Thursday Night
Mostly cloudy, with a low around 17. Calm wind becoming east southeast around 5 mph after midnight.
Friday
A 20 percent chance of snow after 11am. Partly sunny, with a high near 31. East southeast wind around 6 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 2.
Saturday
Sunny, with a high near 25.
Saturday Night
Partly cloudy, with a low around 4.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Mostly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
Swan Valley ID
 43.46°N 111.34°W (Elev. 5509 ft)
1:17 pm MST Jan 21, 2026
1pm MST Jan 21, 2026-6pm MST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database