7-Day Forecast 41.67°N 93.69°W (Text-Only)
NWS Forecast for: Johnston IA
Issued by: National Weather Service Des Moines, IA
Last Update: 5:06 am CST Dec 14, 2025
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  • Today

    Today: Sunny and cold, with a high near 10. Wind chill values as low as -20. Northwest wind 5 to 8 mph becoming calm.

    High: 10 °F

    Cold


  • Tonight

    Tonight: Mostly clear, with a temperature rising to around 16 by 4am. Wind chill values as low as -5. South southwest wind 7 to 14 mph, with gusts as high as 25 mph.

    Low: 6 °F

    Mostly Clear


  • Monday

    Monday: Sunny, with a high near 33. Wind chill values as low as 5. West wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 33 °F

    Sunny


  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 17. Light and variable wind.

    Low: 17 °F

    Partly Cloudy


  • Tuesday

    Tuesday: Partly sunny, with a high near 40. South wind 3 to 7 mph.

    High: 40 °F

    Partly Sunny


  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy


  • Wednesday

    Wednesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny


  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of rain after midnight.  Mostly cloudy, with a low around 37.

    Low: 37 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 42. Breezy.

    High: 42 °F

    Mostly Sunny
    and Breezy



  • Today: Sunny and cold, with a high near 10. Wind chill values as low as -20. Northwest wind 5 to 8 mph becoming calm.

    Tonight: Mostly clear, with a temperature rising to around 16 by 4am. Wind chill values as low as -5. South southwest wind 7 to 14 mph, with gusts as high as 25 mph.

    Monday: Sunny, with a high near 33. Wind chill values as low as 5. West wind 5 to 11 mph, with gusts as high as 23 mph.

    Monday Night: Partly cloudy, with a low around 17. Light and variable wind.

    Tuesday: Partly sunny, with a high near 40. South wind 3 to 7 mph.

    Tuesday Night: Partly cloudy, with a low around 25.

    Wednesday: Partly sunny, with a high near 42.

    Wednesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 37.

    Thursday: Mostly sunny, with a high near 42. Breezy.

    Thursday Night: Partly cloudy, with a low around 13.

    Friday: Partly sunny, with a high near 37.

    Friday Night: Mostly cloudy, with a low around 29.

    Saturday: Partly sunny, with a high near 41.



    Johnston IA
     41.67°N 93.69°W

    Visit your local NWS office at: https://www.weather.gov/desmoines