Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

27°F

-3°C

Humidity 68%
Wind Speed SSW 6 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 08 Dec 04:05 AM MST
Extended Forecast for

Riverton WY

  • Today

    Today: Mostly sunny, with a high near 44. Southwest wind 6 to 10 mph.

    High: 44 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 24 mph.

    Low: 30 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 51. Breezy, with a south southwest wind 9 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 51 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 8pm, then a slight chance of rain and snow.  Mostly cloudy, with a low around 27. West northwest wind 7 to 9 mph becoming south southeast in the evening.  Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of rain and snow before 8am, then a slight chance of rain between 8am and 11am.  Partly sunny, with a high near 55. Southwest wind 6 to 9 mph.  Chance of precipitation is 20%.

    High: 55 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Southwest wind around 10 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 52. East northeast wind around 8 mph.

    High: 52 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 44. Southwest wind 6 to 10 mph.
Tonight
Mostly cloudy, with a low around 30. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, with a high near 51. Breezy, with a south southwest wind 9 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Tuesday Night
A slight chance of rain before 8pm, then a slight chance of rain and snow. Mostly cloudy, with a low around 27. West northwest wind 7 to 9 mph becoming south southeast in the evening. Chance of precipitation is 20%.
Wednesday
A slight chance of rain and snow before 8am, then a slight chance of rain between 8am and 11am. Partly sunny, with a high near 55. Southwest wind 6 to 9 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 33. Southwest wind around 10 mph.
Thursday
Partly sunny, with a high near 52. East northeast wind around 8 mph.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 42.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.04°N 108.41°W (Elev. 5046 ft)
2:51 am MST Dec 8, 2025
4am MST Dec 8, 2025-6pm MST Dec 14, 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