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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Henry's Lake (ITD55)

Lat: 44.61831°NLon: 111.33548°WElev: 6617.0ft.

NA

79°F

26°C

Humidity 18%
Wind Speed WSW 11 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility 1.24 mi
Heat Index78°F (26°C)
Last update 19 Aug 05:30 PM MDT
Extended Forecast for

7 Miles W Island Park ID

  • Tonight

    Tonight: Mostly clear, with a low around 50. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 73. North northwest wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. West southwest wind 6 to 8 mph becoming north northeast after midnight.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 58. West southwest wind 8 to 10 mph becoming east northeast after midnight.

    Low: 58 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.

    High: 67 °F

    Chance Rain
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 50. West wind 6 to 10 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 73. North northwest wind 5 to 10 mph becoming east in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 56. West southwest wind 6 to 8 mph becoming north northeast after midnight.
Friday
Mostly sunny, with a high near 75. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 58. West southwest wind 8 to 10 mph becoming east northeast after midnight.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.
Saturday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53.
Sunday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 66.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 65.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Tuesday
A 20 percent chance of rain and thunderstorms. Mostly sunny, with a high near 66.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles W Island Park ID
 44.57°N 111.47°W (Elev. 8950 ft)
Last Update:
5:31 pm MDT Aug 19, 2026
Forecast Valid:
5pm MDT Aug 19, 2026-6pm MDT Aug 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation