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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 >

Hazardous Weather Conditions

Current conditions at

Hailey, Friedman Memorial Airport (KSUN)

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

Clear

66°F

19°C

Humidity 34%
Wind Speed WNW 9 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 01 Aug 12:55 AM MDT
Extended Forecast for

5 Miles NW Lost River ID

Heat Advisory August 1, 01:24am 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
  •  
    Heat Advisory August 1, 01:24am until August 2, 12:00am

    NOW until 12:00am Sun

    Heat Advisory

  • Overnight

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Light and variable wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 28 mph.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. West northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 28 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 81. Breezy, with a west southwest wind 6 to 11 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 81 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. West wind 10 to 20 mph, with gusts as high as 31 mph.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 62. Calm wind.
Saturday
Sunny, with a high near 86. Light and variable wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 28 mph.
Saturday Night
Partly cloudy, with a low around 58. West northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 28 mph.
Sunday
Sunny, with a high near 81. Breezy, with a west southwest wind 6 to 11 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.
Sunday Night
Mostly clear, with a low around 50. West wind 10 to 20 mph, with gusts as high as 31 mph.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Lost River ID
 43.76°N 113.62°W (Elev. 7444 ft)
Last Update:
12:46 am MDT Aug 1, 2026
Forecast Valid:
1am MDT Aug 1, 2026-6pm MDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation