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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Mostly Cloudy

36°F

2°C

Humidity 80%
Wind Speed NW 26 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 26 Dec 06:30 PM MST
Extended Forecast for

Riverton WY

  • Tonight

    Tonight: A slight chance of rain showers, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 28. Breezy, with a south southwest wind 17 to 22 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain/Snow and
    Breezy then
    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow showers after 4pm. Mostly sunny, with a high near 48. Breezy, with a south southwest wind 8 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 48 °F

    Mostly Sunny
    then Chance
    Snow Showers
    and Breezy

  • Saturday Night

    Saturday Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 13. North wind 9 to 14 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Sunny, with a high near 29. West wind 3 to 7 mph.

    High: 29 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Light west southwest wind.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 33. Light and variable wind.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12. Light and variable wind becoming south southwest around 5 mph after midnight.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain showers, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 28. Breezy, with a south southwest wind 17 to 22 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Saturday
A 30 percent chance of snow showers after 4pm. Mostly sunny, with a high near 48. Breezy, with a south southwest wind 8 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A 50 percent chance of snow showers. Mostly cloudy, with a low around 13. North wind 9 to 14 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Sunday
Sunny, with a high near 29. West wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 7. Light west southwest wind.
Monday
Sunny, with a high near 33. Light and variable wind.
Monday Night
Mostly clear, with a low around 12. Light and variable wind becoming south southwest around 5 mph after midnight.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 18.
New Year's Day
Partly sunny, with a high near 43.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
A slight chance of rain and snow showers. Partly sunny, with a high near 48.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
Last Update:
6:17 pm MST Dec 26, 2025
Forecast Valid:
6pm MST Dec 26, 2025-6pm MST Jan 2, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation