Johnston Weather Forecast

    • 27
    • 36

    Decreasing Clouds

    • 35
    • 44

    Rain Likely

    • 37
    • 46

    Rain Likely

    • 37
    • 50

    Chance Rain

    • 45
    • 62

    Rain Likely

    • 31
    • 65

    Chance Rain

    • 35
    • 56

    Slight Chance Rain

Today 1 Mar Polk

Mostly cloudy. Highs in the mid 30s. East Winds 5 to 10 Mph.

Tonight 1 Mar Polk

Mostly cloudy. A slight chance of snow early. Lows in the mid 20s. East Winds 5 to 10 Mph. Chance of snow 20 percent.

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Johnston Temperature Statistics

March Temperature

Ankeny Regional Airport (6.8 miles)

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  • Average March

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Climate (2021–Present)

Ankeny Regional Airport (6.8 miles)

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  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.2 °F
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