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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Afton WY (KAFO)

Lat: 42.71133°NLon: 110.94217°WElev: 6201.0ft.

Clear

66°F

19°C

Humidity 52%
Wind Speed NW 3 MPH
Barometer 30.39 in (1029.12 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 31 Jul 10:35 AM MDT
Extended Forecast for

Afton WY

Heat Advisory August 1, 12:00pm until August 2, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Isolated showers and thunderstorms after 2pm. Patchy smoke. Sunny, with a high near 90. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 90 °F

    Patchy Smoke
    then Isolated
    T-storms

  • Tonight

    Tonight: Patchy smoke. Mostly clear, with a low around 52. North northeast wind 8 to 13 mph becoming light and variable.

    Low: 52 °F

    Patchy Smoke

  • Saturday

    Saturday: Patchy smoke. Sunny, with a high near 94. Light and variable wind becoming southwest 8 to 13 mph in the morning.

    High: 94 °F

    Patchy Smoke

  • Saturday Night

    Saturday Night: Patchy smoke between 8pm and 9pm. Partly cloudy, with a low around 57. West southwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 57 °F

    Patchy Smoke
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 92. Light and variable wind becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. West northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
Isolated showers and thunderstorms after 2pm. Patchy smoke. Sunny, with a high near 90. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Patchy smoke. Mostly clear, with a low around 52. North northeast wind 8 to 13 mph becoming light and variable.
Saturday
Patchy smoke. Sunny, with a high near 94. Light and variable wind becoming southwest 8 to 13 mph in the morning.
Saturday Night
Patchy smoke between 8pm and 9pm. Partly cloudy, with a low around 57. West southwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 92. Light and variable wind becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 24 mph.
Sunday Night
Mostly clear, with a low around 51. West northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.
Monday
Sunny, with a high near 83. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Clear, with a low around 45.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Clear, with a low around 46.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Afton WY
 42.73°N 110.93°W (Elev. 6266 ft)
Last Update:
9:48 am MDT Jul 31, 2026
Forecast Valid:
10am MDT Jul 31, 2026-6pm MDT Aug 6, 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