Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Partly Cloudy

73°F

23°C

Humidity 23%
Wind Speed SSE 20 MPH
Barometer 29.73 in (1006.77 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 26 May 07:30 PM MDT
Extended Forecast for

Riverton WY

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Breezy, with a south southeast wind 7 to 16 mph, with gusts as high as 23 mph.

    Low: 49 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm.  Partly sunny, with a high near 86. South southeast wind 7 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 10%.

    High: 86 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. Breezy, with a southeast wind 10 to 15 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.

    Low: 49 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Light and variable wind becoming south southeast 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. South southwest wind 5 to 14 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 87. Breezy, with a south southwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 87 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 51. Breezy, with a south wind 13 to 15 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 76. Windy.  Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers and
    Windy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 44. Breezy.

    Low: 44 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Breezy, with a south southeast wind 7 to 16 mph, with gusts as high as 23 mph.
Wednesday
A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. South southeast wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 10%.
Wednesday Night
Partly cloudy, with a low around 49. Breezy, with a southeast wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Thursday
Mostly sunny, with a high near 89. Light and variable wind becoming south southeast 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 51. South southwest wind 5 to 14 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 87. Breezy, with a south southwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 51. Breezy, with a south wind 13 to 15 mph, with gusts as high as 21 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Windy. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 44. Breezy.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 78.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 44.
Monday
A chance of showers and thunderstorms. Sunny, with a high near 78.
Monday Night
A chance of showers. Partly cloudy, with a low around 45.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
6:02 pm MDT May 26, 2026
7pm MDT May 26, 2026-6pm MDT Jun 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database