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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

46°F

8°C

Humidity 70%
Wind Speed WNW 5 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 17 Oct 11:00 PM MDT
Extended Forecast for

Riverton WY

  • Tonight

    Tonight: Areas of frost after 5am. Otherwise, clear, with a low around 37. South southwest wind 3 to 5 mph.

    Low: 37 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. Calm wind becoming west around 5 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 63. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. Light and variable wind becoming west around 5 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 41. Light and variable wind.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of frost after 5am. Otherwise, clear, with a low around 37. South southwest wind 3 to 5 mph.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 61. Light and variable wind.
Sunday Night
Mostly clear, with a low around 35. Calm wind becoming west around 5 mph.
Monday
Sunny, with a high near 63. Calm wind becoming northeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 39. Light and variable wind becoming west around 5 mph.
Tuesday
Sunny, with a high near 65. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 41. Light and variable wind.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 46. Breezy.
Friday
A chance of showers. Mostly sunny, with a high near 65.
Friday Night
A chance of showers. Partly cloudy, with a low around 42.
Saturday
A chance of showers. Mostly sunny, with a high near 57.
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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:
10:32 pm MDT Oct 17, 2026
Forecast Valid:
11pm MDT Oct 17, 2026-6pm MDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

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