Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Hailey, Friedman Memorial Airport (KSUN)

Lat: 43.5°NLon: 114.3°WElev: 5318.0ft.

Partly Cloudy

73°F

23°C

Humidity 40%
Wind Speed NW 11 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 26 Aug 10:50 AM MDT
Extended Forecast for

Arco ID

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly cloudy, with a high near 89. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm.  Partly cloudy, with a low around 57. West southwest wind 5 to 8 mph becoming northeast in the evening.

    Low: 57 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 89. North wind 5 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph.  Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming light and variable  after midnight. Winds could gust as high as 26 mph.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly after noon.  Cloudy, with a high near 80. Light and variable wind becoming southwest 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 80 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers, mainly after midnight.  Mostly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after noon.  Mostly sunny, with a high near 78. Breezy.  Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. Breezy.

    Low: 48 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 89. Light and variable wind becoming west southwest 5 to 8 mph in the afternoon.
Tonight
A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 57. West southwest wind 5 to 8 mph becoming northeast in the evening.
Thursday
A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 89. North wind 5 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 26 mph.
Friday
A 30 percent chance of showers, mainly after noon. Cloudy, with a high near 80. Light and variable wind becoming southwest 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
A 50 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 53.
Saturday
A slight chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 78. Breezy. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 48. Breezy.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 47.
Monday
A 30 percent chance of rain and thunderstorms. Partly sunny, with a high near 79.
Monday Night
A 20 percent chance of rain. Partly cloudy, with a low around 50.
Tuesday
A 20 percent chance of rain and thunderstorms. Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Arco ID
 43.62°N 113.3°W (Elev. 5364 ft)
11:31 am MDT Aug 26, 2026
11am MDT Aug 26, 2026-6pm MDT Sep 1, 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