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 >

Hazardous Weather Conditions

Current conditions at

Storm Lake (KSLB)

Lat: 42.6°NLon: 95.23°WElev: 1489ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

5 Miles SE Sac City IA

  • This Afternoon

    This Afternoon: A slight chance of showers, with thunderstorms also possible after 4pm.  Partly sunny, with a high near 78. Light northeast wind.  Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 64. South southwest wind 3 to 5 mph.  Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 84. Light west northwest wind.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 63. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 78. Light northeast wind. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 58. Light and variable wind.
Thursday
Mostly sunny, with a high near 82. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 64. South southwest wind 3 to 5 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 84. Light west northwest wind.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 63. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Mostly cloudy, with a low around 59.
Monday
Partly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Sac City IA
 42.37°N 94.94°W
11:43 am CDT Aug 19, 2026
12pm CDT Aug 19, 2026-6pm CDT 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