Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Hailey, Friedman Memorial Airport (KSUN)

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

Mostly Cloudy

59°F

15°C

Humidity 67%
Wind Speed NW 5 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 17 Aug 07:47 AM MDT
Extended Forecast for

4 Miles SE Sun Valley ID

Red Flag Warning August 17, 12:00pm until August 17, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  • Today

    Today: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 78. Light and variable wind becoming south 5 to 10 mph in the afternoon.  Chance of precipitation is 60%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light and variable  after midnight.

    Low: 53 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82. East wind 5 to 10 mph becoming south southwest in the afternoon.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. South southwest wind 5 to 10 mph becoming north northeast after midnight.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. North northeast wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

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

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Light and variable wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 60%.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 82. East wind 5 to 10 mph becoming south southwest in the afternoon.
Monday Night
Mostly clear, with a low around 55. South southwest wind 5 to 10 mph becoming north northeast after midnight.
Tuesday
Sunny, with a high near 86. North northeast wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 84.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Sun Valley ID
 43.63°N 114.26°W (Elev. 6175 ft)
5:31 am MDT Aug 17, 2025
8am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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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