Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

62°F

17°C

Humidity 64%
Wind Speed NE 6 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 18 Aug 01:53 AM MDT
Extended Forecast for

Riverton WY

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. North northwest wind around 5 mph becoming light and variable.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 84. Light and variable wind becoming southwest 5 to 8 mph in the afternoon.  Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 10pm.  Partly cloudy, with a low around 54. South southwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 54 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming north around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Northeast wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. West wind 3 to 8 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. North northwest wind around 5 mph becoming light and variable.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 84. Light and variable wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 54. South southwest wind 5 to 8 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 89. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. Northeast wind 5 to 8 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 93. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 59. West wind 3 to 8 mph.
Friday
Sunny, with a high near 94.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 92.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
1:02 am MDT Aug 18, 2026
2am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
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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