National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Ankeny Regional Airport (KIKV)

Lat: 41.69°NLon: 93.57°WElev: 886ft.

Fair

57°F

14°C

Humidity 94%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 20 Jun 12:35 am CDT
Extended Forecast for

Johnston IA

  • Overnight

    Overnight: Mostly clear, with a low around 56. Light west southwest wind.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 81. Light west northwest wind.

    High: 81 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 60. East wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm before noon, then showers likely. Some of the storms could produce heavy rainfall. High near 70. Breezy, with an east northeast wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 70 °F

    Heavy Rain
    then Heavy
    Rain and
    Breezy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 56. North northeast wind 7 to 14 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 56. Light west southwest wind.
Saturday
Increasing clouds, with a high near 81. Light west northwest wind.
Saturday Night
A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 60. East wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm before noon, then showers likely. Some of the storms could produce heavy rainfall. High near 70. Breezy, with an east northeast wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Sunday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 56. North northeast wind 7 to 14 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Johnston IA
 41.69°N 93.68°W
Last Update:
10:47 pm CDT Jun 19, 2026
Forecast Valid:
12am CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation