Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

ISLAND PARK (IPFI1)

Lat: 44.42051°NLon: 111.36741°WElev: 6337.0ft.

NA

47°F

8°C

Humidity 98%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 19 Aug 02:54 AM MDT
Extended Forecast for

20 Miles S Lakeview MT

Heat Advisory August 21, 12:00pm until August 21, 10:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Mostly clear, with a low around 48. North northeast wind around 8 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. West southwest wind 5 to 8 mph becoming light and variable.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Northeast wind 6 to 8 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. West southwest wind around 7 mph becoming northeast after midnight.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain after 9pm.  Mostly cloudy, with a low around 56. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    T-storms then
    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 78. Chance of precipitation is 30%.

    High: 78 °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 51.

    Low: 51 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 48. North northeast wind around 8 mph.
Wednesday
Sunny, with a high near 79. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 51. West southwest wind 5 to 8 mph becoming light and variable.
Thursday
Sunny, with a high near 84. Northeast wind 6 to 8 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 55. West southwest wind around 7 mph becoming northeast after midnight.
Friday
Mostly sunny, with a high near 86.
Friday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain after 9pm. Mostly cloudy, with a low around 56. Chance of precipitation is 20%.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 51.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 49.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Tuesday
A 30 percent chance of rain and thunderstorms. Partly sunny, with a high near 75.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles S Lakeview MT
 44.31°N 111.79°W (Elev. 6499 ft)
2:31 am MDT Aug 19, 2026
3am MDT Aug 19, 2026-6pm MDT Aug 25, 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