Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Mostly Cloudy

23°F

-5°C

Humidity 62%
Wind Speed NE 5 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 19 Jan 04:05 AM MST
Extended Forecast for

Riverton WY

  • M.L.King Day

    M.L.King Day: Patchy fog before 10am.  Otherwise, sunny, with a high near 41. Light and variable wind.

    High: 41 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 18. Light and variable wind becoming southwest around 5 mph in the evening.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 41. Light and variable wind becoming north northeast 9 to 14 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 41 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 11. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 11 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 35. Calm wind becoming north northeast 5 to 8 mph in the morning.

    High: 35 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 9. North northeast wind around 5 mph becoming calm  in the evening.

    Low: 9 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 37. Calm wind becoming north northeast 5 to 7 mph in the afternoon.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

Detailed Forecast

M.L.King Day
Patchy fog before 10am. Otherwise, sunny, with a high near 41. Light and variable wind.
Tonight
Mostly clear, with a low around 18. Light and variable wind becoming southwest around 5 mph in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 41. Light and variable wind becoming north northeast 9 to 14 mph in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 11. Calm wind becoming south southwest around 5 mph after midnight.
Wednesday
Sunny, with a high near 35. Calm wind becoming north northeast 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 9. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 37. Calm wind becoming north northeast 5 to 7 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 28.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Sunny, with a high near 35.
Saturday Night
Mostly clear, with a low around 11.
Sunday
Sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
2:33 am MST Jan 19, 2026
4am MST Jan 19, 2026-6pm MST Jan 25, 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