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

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

67°F

19°C

Humidity 17%
Wind Speed SSW 9 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 21 Apr 09:53 PM MDT
Extended Forecast for

Riverton WY

Fire Weather Watch April 22, 09:00am until April 22, 08:00pm
Click here for hazard details and duration
Fire Weather Watch

  • Tonight

    Tonight: Mostly cloudy early, then gradual clearing, with a low around 48. South wind around 14 mph, with gusts as high as 22 mph.

    Low: 48 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Sunny, with a high near 69. Windy, with a southwest wind 13 to 23 mph increasing to 23 to 33 mph in the afternoon. Winds could gust as high as 48 mph.

    High: 69 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36. Breezy, with a south southwest wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 37 mph.

    Low: 36 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 60. Breezy, with a southwest wind 10 to 17 mph becoming west northwest in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 60 °F

    Breezy.
    Slight Chance
    Rain/Snow
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before midnight, then snow showers likely. Some thunder is also possible. Mostly cloudy, with a low around 27. Blustery, with a west northwest wind 10 to 16 mph becoming north northeast in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance
    Rain/Snow and
    Blustery then
    Snow Showers
    Likely

  • Friday

    Friday: Snow showers likely, mainly before noon. Some thunder is also possible. Partly sunny, with a high near 48. North wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 48 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers. Partly cloudy, with a low around 23. North wind 7 to 11 mph.

    Low: 23 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain showers before 9pm, then a chance of rain and snow showers between 9pm and 3am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy early, then gradual clearing, with a low around 48. South wind around 14 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 69. Windy, with a southwest wind 13 to 23 mph increasing to 23 to 33 mph in the afternoon. Winds could gust as high as 48 mph.
Wednesday Night
Mostly cloudy, with a low around 36. Breezy, with a south southwest wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 37 mph.
Thursday
A slight chance of rain and snow showers before noon, then a chance of rain showers. Partly sunny, with a high near 60. Breezy, with a southwest wind 10 to 17 mph becoming west northwest in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow showers before midnight, then snow showers likely. Some thunder is also possible. Mostly cloudy, with a low around 27. Blustery, with a west northwest wind 10 to 16 mph becoming north northeast in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly before noon. Some thunder is also possible. Partly sunny, with a high near 48. North wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow showers. Partly cloudy, with a low around 23. North wind 7 to 11 mph.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
A slight chance of rain showers before 9pm, then a chance of rain and snow showers between 9pm and 3am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Sunday
A chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Partly sunny, with a high near 50. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 29.
Monday
A slight chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 58.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
Last Update:
8:47 pm MDT Apr 21, 2026
Forecast Valid:
10pm MDT Apr 21, 2026-6pm MDT Apr 28, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation