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

Centerville Municipal Airport (KTVK)

Lat: 40.68°NLon: 92.9°WElev: 1030ft.

Overcast

72°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 19 Aug 3:35 am CDT
Extended Forecast for

Rathbun IA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly before 5am.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a steady temperature around 71. Calm wind.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after noon.  Patchy fog before 9am.  Otherwise, partly sunny, with a high near 80. Light northeast wind.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Light east northeast wind.

    Low: 64 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 82. Calm wind.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Light south southwest wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly before 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a steady temperature around 71. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after noon. Patchy fog before 9am. Otherwise, partly sunny, with a high near 80. Light northeast wind. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 64. Light east northeast wind.
Thursday
Sunny, with a high near 82. Calm wind.
Thursday Night
Mostly clear, with a low around 66. Light south southwest wind.
Friday
Sunny, with a high near 85.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Rathbun IA
 40.81°N 92.88°W
1:26 am CDT Aug 19, 2026
3am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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