Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

97°F

36°C

Humidity 16%
Wind Speed SW 16 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 25 Jul 04:00 PM MDT
Extended Forecast for

Arapahoe WY

Heat Advisory July 25, 04:26pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 25, 04:26pm until July 26, 09:00pm

    NOW until 9:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 97 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 64. West wind 5 to 11 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 99. Light and variable wind becoming north 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. North wind 5 to 11 mph becoming south southwest after midnight.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 96. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 62. North wind 5 to 11 mph becoming west southwest in the evening.

    Low: 62 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming north around 6 mph in the afternoon.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny and hot, with a high near 97. West wind around 14 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 64. West wind 5 to 11 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 99. Light and variable wind becoming north 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 63. North wind 5 to 11 mph becoming south southwest after midnight.
Monday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
Monday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. North wind 5 to 11 mph becoming west southwest in the evening.
Tuesday
Sunny, with a high near 96. Calm wind becoming north around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.
Wednesday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96.
Wednesday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62.
Thursday
Sunny, with a high near 96.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Sunny and hot, with a high near 98.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe WY
 42.97°N 108.49°W (Elev. 5036 ft)
2:47 pm MDT Jul 25, 2026
4pm MDT Jul 25, 2026-6pm MDT Jul 31, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database