Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

54°F

12°C

Humidity 27%
Wind Speed NW 27 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 11 Dec 09:20 AM MST
Extended Forecast for

Riverton WY

  • Today

    Today: Mostly sunny, with a high near 58. Southwest wind 5 to 11 mph.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 29. Southwest wind 7 to 10 mph.

    Low: 29 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 53. West southwest wind 6 to 9 mph.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29. Southwest wind around 10 mph.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51. West southwest wind 5 to 8 mph becoming northeast in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. South wind around 5 mph.

    Low: 23 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 58. Southwest wind 5 to 11 mph.
Tonight
Partly cloudy, with a low around 29. Southwest wind 7 to 10 mph.
Friday
Mostly sunny, with a high near 53. West southwest wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 29. Southwest wind around 10 mph.
Saturday
Mostly sunny, with a high near 51. West southwest wind 5 to 8 mph becoming northeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 23. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 50. Light and variable wind becoming south around 6 mph in the afternoon.
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 55.
Tuesday Night
A slight chance of rain and snow. Partly cloudy, with a low around 32. Breezy.
Wednesday
A slight chance of rain and snow. Mostly sunny, with a high near 51. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.04°N 108.41°W (Elev. 5046 ft)
8:02 am MST Dec 11, 2025
9am MST Dec 11, 2025-6pm MST Dec 17, 2025
 
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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