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

Joslin Field - Magic Valley Regional Airport (KTWF)

Lat: 42.4785°NLon: 114.47739°WElev: 4163.0ft.

Clear

93°F

34°C

Humidity 16%
Wind Speed NW 9 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 19 Aug 05:00 PM MDT
Extended Forecast for

6 Miles SW Filer ID

Heat Advisory August 20, 12:00pm until August 21, 09:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Mostly clear, with a low around 62. Northeast wind 5 to 9 mph becoming south after midnight.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Southeast wind 6 to 9 mph becoming north in the afternoon.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66. North northeast wind 6 to 9 mph becoming south southwest after midnight.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 97. South southeast wind 5 to 8 mph becoming east northeast in the afternoon.

    High: 97 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm.  Mostly cloudy, with a low around 71. East northeast wind 8 to 13 mph becoming south southwest in the evening.  Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight.  Partly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 62. Northeast wind 5 to 9 mph becoming south after midnight.
Thursday
Sunny and hot, with a high near 98. Southeast wind 6 to 9 mph becoming north in the afternoon.
Thursday Night
Mostly cloudy, with a low around 66. North northeast wind 6 to 9 mph becoming south southwest after midnight.
Friday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 97. South southeast wind 5 to 8 mph becoming east northeast in the afternoon.
Friday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, with a low around 71. East northeast wind 8 to 13 mph becoming south southwest in the evening. Chance of precipitation is 20%.
Saturday
Partly sunny and hot, with a high near 92.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 64.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Filer ID
 42.52°N 114.7°W (Elev. 4065 ft)
12:32 pm MDT Aug 19, 2026
5pm MDT Aug 19, 2026-6pm MDT Aug 26, 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