Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

96°F

36°C

Humidity 9%
Wind Speed SSW 9 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 01 Aug 03:53 PM MDT
Extended Forecast for

11 Miles ENE Saint Stephens WY

Heat Advisory August 1, 04:04pm until August 2, 10:00pm
Red Flag Warning August 2, 01:00pm until August 2, 09:00pm
Click here for hazard details and duration
Heat Advisory
Red Flag Warning
  •  
    Heat Advisory August 1, 04:04pm until August 2, 10:00pm

    NOW until 10:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 98 °F

    Patchy Smoke

  • Tonight

    Tonight: Patchy smoke before 3am. Partly cloudy, with a low around 65. South wind 6 to 9 mph becoming west southwest after midnight.

    Low: 65 °F

    Patchy Smoke

  • Sunday

    Sunday: Widespread smoke, mainly after 2pm. Mostly sunny and hot, with a high near 101. Breezy, with a light and variable wind becoming west 16 to 21 mph in the afternoon.

    High: 101 °F

    Smoke and
    Breezy

  • Sunday Night

    Sunday Night: Widespread smoke, mainly between 11pm and 1am. Partly cloudy, with a low around 61. Breezy, with a west wind 13 to 18 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 24 mph.

    Low: 61 °F

    Smoke and
    Breezy

  • Monday

    Monday: Sunny, with a high near 84. Breezy, with a north northeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 84 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Breezy, with an east northeast wind 11 to 21 mph, with gusts as high as 31 mph.

    Low: 52 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. East wind 7 to 13 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Patchy smoke. Sunny and hot, with a high near 98. Light north northwest wind.
Tonight
Patchy smoke before 3am. Partly cloudy, with a low around 65. South wind 6 to 9 mph becoming west southwest after midnight.
Sunday
Widespread smoke, mainly after 2pm. Mostly sunny and hot, with a high near 101. Breezy, with a light and variable wind becoming west 16 to 21 mph in the afternoon.
Sunday Night
Widespread smoke, mainly between 11pm and 1am. Partly cloudy, with a low around 61. Breezy, with a west wind 13 to 18 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 24 mph.
Monday
Sunny, with a high near 84. Breezy, with a north northeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Monday Night
Mostly clear, with a low around 52. Breezy, with an east northeast wind 11 to 21 mph, with gusts as high as 31 mph.
Tuesday
Sunny, with a high near 83. East wind 7 to 13 mph.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles ENE Saint Stephens WY
 43°N 107.99°W (Elev. 5279 ft)
2:48 pm MDT Aug 1, 2026
4pm MDT Aug 1, 2026-6pm MDT Aug 7, 2026
 
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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