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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

59°F

15°C

Humidity 47%
Wind Speed WNW 8 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 17 Aug 03:53 AM MDT
Extended Forecast for

3 Miles ENE Arapahoe WY

  • Today

    Today: Mostly sunny, with a high near 88. Light and variable wind becoming south southwest 8 to 13 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. Northwest wind 5 to 10 mph becoming west southwest after midnight.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. Southwest wind around 6 mph.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. East wind 6 to 8 mph becoming west southwest after midnight.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 88. Light and variable wind becoming south southwest 8 to 13 mph in the afternoon.
Tonight
Mostly clear, with a low around 53. Northwest wind 5 to 10 mph becoming west southwest after midnight.
Monday
Sunny, with a high near 92. Calm wind becoming west southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 54. Southwest wind around 6 mph.
Tuesday
Sunny, with a high near 96. Calm wind becoming east 5 to 8 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 55. East wind 6 to 8 mph becoming west southwest after midnight.
Wednesday
Sunny and hot, with a high near 98. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 88.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Arapahoe WY
 43°N 108.41°W (Elev. 4957 ft)
Last Update:
3:28 am MDT Aug 17, 2025
Forecast Valid:
4am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation