Johnston Weather Forecast

    • 55
    • 77

    Areas Smoke

    • 57
    • 77

    Partly Sunny

    • 60
    • 78

    Partly Sunny

    • 64
    • 83

    Mostly Sunny

    • 69
    • 86

    Partly Sunny

    • 70
    • 89

    Slight Chance Thunderstorms

Today 2 Aug Polk

Mostly sunny. Areas of smoke. Highs in the upper 70s. Southeast Winds around 5 Mph.

Tonight 2 Aug Polk

Mostly cloudy. Lows in the mid 50s. Northeast Winds around 5 Mph.

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Johnston Temperature Statistics

August Temperature

Ankeny Regional Airport (6.8 miles)

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Climate (2020–Present)

Ankeny Regional Airport (6.8 miles)

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  • Average Low 2020–2025

    40.9 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    61.7 °F
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