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

Hailey, Friedman Memorial Airport (KSUN)

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

Clear

91°F

33°C

Humidity 18%
Wind Speed SE 5 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 31 Jul 06:55 PM MDT
Extended Forecast for

3 Miles SW Arco ID

Heat Advisory August 1, 12:00am until August 2, 12:00am
Red Flag Warning August 1, 02:00pm until August 2, 09:00pm
Click here for hazard details and duration
Heat Advisory
Red Flag Warning
  • Tonight

    Tonight: Mostly clear, with a low around 59. West southwest wind 5 to 7 mph becoming east northeast in the evening.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97. Breezy, with a light and variable wind becoming west southwest 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 97 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Patchy smoke after 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Breezy, with a west southwest wind 17 to 22 mph becoming northwest 7 to 12 mph in the evening. Winds could gust as high as 33 mph.

    Low: 61 °F

    Mostly Cloudy
    and Breezy
    then Patchy
    Smoke

  • Sunday

    Sunday: Patchy smoke before 7am. Sunny, with a high near 91. Breezy, with a west southwest wind 5 to 10 mph becoming southwest 19 to 29 mph in the morning. Winds could gust as high as 40 mph.

    High: 91 °F

    Patchy Smoke
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53. Breezy, with a west southwest wind 23 to 28 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 39 mph.

    Low: 53 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 51.

    Low: 51 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 59. West southwest wind 5 to 7 mph becoming east northeast in the evening.
Saturday
Sunny and hot, with a high near 97. Breezy, with a light and variable wind becoming west southwest 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.
Saturday Night
Patchy smoke after 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Breezy, with a west southwest wind 17 to 22 mph becoming northwest 7 to 12 mph in the evening. Winds could gust as high as 33 mph.
Sunday
Patchy smoke before 7am. Sunny, with a high near 91. Breezy, with a west southwest wind 5 to 10 mph becoming southwest 19 to 29 mph in the morning. Winds could gust as high as 40 mph.
Sunday Night
Mostly clear, with a low around 53. Breezy, with a west southwest wind 23 to 28 mph becoming northwest 10 to 15 mph after midnight. Winds could gust as high as 39 mph.
Monday
Sunny, with a high near 86.
Monday Night
Clear, with a low around 48.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Clear, with a low around 51.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Mostly clear, with a low around 59. Breezy.
Friday
Sunny and hot, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Arco ID
 43.6°N 113.32°W (Elev. 5322 ft)
5:31 pm MDT Jul 31, 2026
7pm MDT Jul 31, 2026-6pm MDT Aug 7, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database