Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Ankeny Regional Airport (KIKV)

Lat: 41.69°NLon: 93.57°WElev: 886ft.

Fair

72°F

22°C

Humidity 88%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Aug 10:35 pm CDT
Extended Forecast for

Johnston IA

  • Tonight

    Tonight: A 10 percent chance of showers after 5am.  Mostly clear, with a low around 66. South wind around 5 mph.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 8am.  Sunny, with a high near 85. South wind 5 to 8 mph becoming northwest in the afternoon.

    High: 85 °F

    Slight Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Calm wind becoming north northwest 5 to 9 mph in the morning.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. North wind around 6 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 10 percent chance of showers after 5am. Mostly clear, with a low around 66. South wind around 5 mph.
Friday
A 20 percent chance of showers before 8am. Sunny, with a high near 85. South wind 5 to 8 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 65. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 81. Calm wind becoming north northwest 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 59. North wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Partly sunny, with a high near 82.
Tuesday Night
Mostly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnston IA
 41.69°N 93.71°W
10:36 pm CDT Aug 20, 2026
10pm CDT Aug 20, 2026-6pm CDT Aug 27, 2026
 
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Additional Resources

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