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 >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

Lat: 43.06219°NLon: 108.44701°WElev: 5443.0ft.

Clear

14°F

-10°C

Humidity 85%
Wind Speed WNW 4 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 21 Jan 01:20 AM MST
Extended Forecast for

Riverton WY

  • Overnight

    Overnight: Mostly clear, with a low around 8. Wind chill values as low as zero. Southwest wind 6 to 8 mph.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 36. Calm wind becoming northeast 5 to 8 mph in the afternoon.

    High: 36 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 6. Northeast wind around 6 mph becoming light and variable  in the evening.

    Low: 6 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 30. Wind chill values as low as zero. Calm wind becoming northeast 5 to 8 mph in the morning.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. East northeast wind 8 to 10 mph.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 21. East northeast wind 6 to 10 mph.

    High: 21 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -2. North northeast wind 5 to 9 mph becoming light and variable  after midnight.

    Low: -2 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 0.

    Low: 0 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 8. Wind chill values as low as zero. Southwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 36. Calm wind becoming northeast 5 to 8 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 6. Northeast wind around 6 mph becoming light and variable in the evening.
Thursday
Mostly sunny, with a high near 30. Wind chill values as low as zero. Calm wind becoming northeast 5 to 8 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 5. East northeast wind 8 to 10 mph.
Friday
Partly sunny, with a high near 21. East northeast wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around -2. North northeast wind 5 to 9 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 27.
Saturday Night
Mostly clear, with a low around 0.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Mostly sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 44.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
1:18 am MST Jan 21, 2026
1am MST Jan 21, 2026-6pm MST Jan 27, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database