Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

41°F

5°C

Humidity 39%
Wind Speed NE 5 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 31 Dec 02:53 PM MST
Extended Forecast for

6 Miles S Lysite WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 43. South wind around 6 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 24. South southeast wind around 8 mph.

    Low: 24 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Isolated showers between 3pm and 4pm.  Increasing clouds, with a high near 45. South wind 6 to 10 mph becoming west southwest in the afternoon.  Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Isolated
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. South southwest wind 6 to 10 mph.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 49. West southwest wind 6 to 8 mph.

    High: 49 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. South southwest wind around 8 mph.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 50. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 29 mph.

    High: 50 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. Breezy.

    Low: 33 °F

    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. Breezy.

    High: 52 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 43. South wind around 6 mph.
Tonight
Partly cloudy, with a low around 24. South southeast wind around 8 mph.
New Year's Day
Isolated showers between 3pm and 4pm. Increasing clouds, with a high near 45. South wind 6 to 10 mph becoming west southwest in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 29. South southwest wind 6 to 10 mph.
Friday
Partly sunny, with a high near 49. West southwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 28. South southwest wind around 8 mph.
Saturday
Partly sunny, with a high near 50. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 29 mph.
Saturday Night
Mostly cloudy, with a low around 33. Breezy.
Sunday
Mostly sunny, with a high near 52. Breezy.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
Partly sunny, with a high near 50. Breezy.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles S Lysite WY
 43.15°N 107.71°W (Elev. 5476 ft)
2:32 pm MST Dec 31, 2025
3pm MST Dec 31, 2025-6pm MST Jan 6, 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