Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Overcast

34°F

1°C

Humidity 85%
Wind Speed WSW 6 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 09 Dec 11:53 PM MST
Extended Forecast for

Riverton WY

  • Overnight

    Overnight: Mostly cloudy, with a low around 27. East northeast wind 3 to 5 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 49. Calm wind becoming west around 5 mph in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. South southwest wind 8 to 10 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51. South wind 6 to 11 mph becoming west in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. West southwest wind 6 to 9 mph.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 54. Southwest wind 3 to 7 mph.

    High: 54 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29. Southwest wind 8 to 11 mph.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 27. East northeast wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 49. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 30. South southwest wind 8 to 10 mph.
Thursday
Mostly sunny, with a high near 51. South wind 6 to 11 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 28. West southwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 54. Southwest wind 3 to 7 mph.
Friday Night
Mostly cloudy, with a low around 29. Southwest wind 8 to 11 mph.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 54.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.04°N 108.41°W (Elev. 5046 ft)
12:01 am MST Dec 10, 2025
12am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
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