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

Joslin Field - Magic Valley Regional Airport (KTWF)

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

Clear

81°F

27°C

Humidity 30%
Wind Speed N 8 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 19 Aug 11:35 AM MDT
Extended Forecast for

11 Miles SSW Castleford ID

  • Today

    Today: Mostly sunny and hot, with a high near 92. North northeast wind 5 to 10 mph.

    High: 92 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 63. North northeast wind 7 to 10 mph becoming south after midnight.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 97. South wind 6 to 10 mph becoming north in the afternoon.

    High: 97 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. North northeast wind 8 to 13 mph becoming south southwest after midnight.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 98. South wind 7 to 9 mph becoming east in the afternoon.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon.  Partly sunny and hot, with a high near 90.

    High: 90 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny and hot, with a high near 92. North northeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 63. North northeast wind 7 to 10 mph becoming south after midnight.
Thursday
Mostly sunny and hot, with a high near 97. South wind 6 to 10 mph becoming north in the afternoon.
Thursday Night
Partly cloudy, with a low around 66. North northeast wind 8 to 13 mph becoming south southwest after midnight.
Friday
Mostly sunny and hot, with a high near 98. South wind 7 to 9 mph becoming east in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 68.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny and hot, with a high near 90.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 63.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 60.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Castleford ID
 42.36°N 114.93°W (Elev. 4639 ft)
3:53 am MDT Aug 19, 2026
11am 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