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

59°F

15°C

Humidity 15%
Wind Speed NNW 5 MPH
Barometer 29.79 in (1008.81 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 14 Apr 03:35 PM MDT
Extended Forecast for

3 Miles WNW Arapahoe WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 62. West northwest wind 6 to 8 mph.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. West northwest wind 6 to 13 mph.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. Breezy, with a west southwest wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 66 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 41. Breezy, with a south wind 16 to 22 mph, with gusts as high as 32 mph.

    Low: 41 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before noon, then rain showers likely. Mostly sunny, with a high near 61. Windy, with a south wind 15 to 20 mph becoming southwest 21 to 26 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 61 °F

    Chance
    Rain/Snow and
    Breezy then
    Showers
    Likely and
    Windy

  • Thursday Night

    Thursday Night: Rain and snow showers, becoming all snow after 9pm. Low around 25. Blustery, with a west northwest wind 16 to 21 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 25 °F

    Rain/Snow and
    Blustery then
    Snow Showers

  • Friday

    Friday: Snow showers likely, mainly before noon. Mostly cloudy, with a high near 39. North wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 39 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 62. West northwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 30. West northwest wind 6 to 13 mph.
Wednesday
Mostly sunny, with a high near 66. Breezy, with a west southwest wind 6 to 11 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 41. Breezy, with a south wind 16 to 22 mph, with gusts as high as 32 mph.
Thursday
A chance of rain and snow showers before noon, then rain showers likely. Mostly sunny, with a high near 61. Windy, with a south wind 15 to 20 mph becoming southwest 21 to 26 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Rain and snow showers, becoming all snow after 9pm. Low around 25. Blustery, with a west northwest wind 16 to 21 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
Snow showers likely, mainly before noon. Mostly cloudy, with a high near 39. North wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 16.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 24.
Sunday
Sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 73. Breezy.
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Forecast Area
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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:
2:19 pm MDT Apr 14, 2026
Forecast Valid:
3pm MDT Apr 14, 2026-6pm MDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation