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

  • Overnight

    Overnight: A slight chance of showers between 4am and 5am. Partly cloudy, with a low around 36. South southwest wind 7 to 11 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 60. Windy, with a west wind 11 to 16 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 60 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29. Breezy, with a west wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph.

    Low: 29 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 62. West northwest wind 5 to 9 mph.

    High: 62 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 31. West northwest wind 8 to 11 mph.

    Low: 31 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Breezy, with a west southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 67 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 42. Breezy, with a south southwest wind 14 to 23 mph, with gusts as high as 33 mph.

    Low: 42 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 61. Windy. Chance of precipitation is 60%.

    High: 61 °F

    Windy. Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Rain showers likely before 9pm, then snow showers likely. Mostly cloudy, with a low around 25. Windy. Chance of precipitation is 70%.

    Low: 25 °F

    Rain/Snow
    Likely and
    Windy

Detailed Forecast

Overnight
A slight chance of showers between 4am and 5am. Partly cloudy, with a low around 36. South southwest wind 7 to 11 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 60. Windy, with a west wind 11 to 16 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph.
Monday Night
Partly cloudy, with a low around 29. Breezy, with a west wind 16 to 21 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph.
Tuesday
Sunny, with a high near 62. West northwest wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 31. West northwest wind 8 to 11 mph.
Wednesday
Mostly sunny, with a high near 67. Breezy, with a west southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 42. Breezy, with a south southwest wind 14 to 23 mph, with gusts as high as 33 mph.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 61. Windy. Chance of precipitation is 60%.
Thursday Night
Rain showers likely before 9pm, then snow showers likely. Mostly cloudy, with a low around 25. Windy. Chance of precipitation is 70%.
Friday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 42. Breezy.
Friday Night
A slight chance of snow showers. Partly cloudy, with a low around 18. Blustery.
Saturday
Sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 26.
Sunday
Mostly sunny, with a high near 64.
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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:
3:33 am MDT Apr 13, 2026
Forecast Valid:
3am MDT Apr 13, 2026-6pm MDT Apr 19, 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