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

Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Ankeny Regional Airport (KIKV)

Lat: 41.69°NLon: 93.57°WElev: 886ft.

Fair

81°F

27°C

Humidity 62%
Wind Speed S 10 G 16 mph
Barometer 29.91 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 11 Sep 1:35 pm CDT
Extended Forecast for

Johnston IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. South wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 66. South wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 81. West southwest wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 59. North wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 4pm, then showers likely after 4pm. Partly sunny, with a high near 71. Light northeast wind becoming east northeast 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Breezy. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 90%.

    Low: 64 °F

    Showers
    Likely then
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 1pm, then showers likely. High near 72. Chance of precipitation is 80%.

    High: 72 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 82. South wind 8 to 10 mph, with gusts as high as 18 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 66. South wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 81. West southwest wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 59. North wind around 5 mph becoming calm in the evening.
Sunday
Showers likely before 10am, then showers likely and possibly a thunderstorm between 10am and 4pm, then showers likely after 4pm. Partly sunny, with a high near 71. Light northeast wind becoming east northeast 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Breezy. Chance of precipitation is 70%.
Monday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 90%.
Tuesday
Showers and possibly a thunderstorm before 1pm, then showers likely. High near 72. Chance of precipitation is 80%.
Tuesday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnston IA
 41.69°N 93.71°W
Last Update:
1:26 pm CDT Sep 11, 2026
Forecast Valid:
1pm CDT Sep 11, 2026-6pm CDT Sep 17, 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