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

Riverton Regional Airport (KRIW)

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

Clear

N/A

Humidity 75%
Wind Speed NE 6 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 01 Apr 11:45 PM MDT
Extended Forecast for

3 Miles WNW Arapahoe WY

  • Today

    Today: Partly sunny, with a high near 71. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: Isolated showers between 8pm and 10pm. Mostly cloudy, with a low around 41. West southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Isolated
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 71. Breezy, with a southwest wind 6 to 11 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 40%.

    High: 71 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 37. Breezy, with a southwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph.

    Low: 37 °F

    Slight Chance
    Showers and
    Breezy then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. Breezy, with a southwest wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 69 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 38. Breezy, with a southwest wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph.

    Low: 38 °F

    Chance
    Showers and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 63. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 63 °F

    Breezy.
    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 62. Chance of precipitation is 20%.

    High: 62 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 71. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
Isolated showers between 8pm and 10pm. Mostly cloudy, with a low around 41. West southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Saturday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 71. Breezy, with a southwest wind 6 to 11 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 40%.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 37. Breezy, with a southwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph.
Sunday
Mostly sunny, with a high near 69. Breezy, with a southwest wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph.
Sunday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 38. Breezy, with a southwest wind 19 to 24 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph.
Monday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 63. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 29 mph.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 35. Breezy.
Tuesday
A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 62. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 64. Breezy.
Wednesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 36. Breezy.
Thursday
A slight chance of rain and snow showers. Mostly sunny, with a high near 62. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Arapahoe WY
 42.99°N 108.56°W (Elev. 5197 ft)
Last Update:
3:32 am MDT Apr 10, 2026
Forecast Valid:
4am MDT Apr 10, 2026-6pm MDT Apr 16, 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