Johnston Weather Forecast

    • 9
    • 48

    Increasing Clouds

    • -2
    • 17

    Increasing Clouds

    • -2
    • 6

    Cold

    • -8
    • 8

    Cold

    • 4
    • 12

    Partly Sunny

    • 17
    • 32

    Mostly Cloudy

    • 12
    • 28

    Mostly Cloudy

Today 17 Jan Polk

Sunny. Highs in the lower 50s. Temperature falling into the lower 40s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 17 Jan Polk

Mostly cloudy and Breezy, cooler with Lows around 10 above. Northwest Winds 10 to 15 Mph, increasing to north 20 to 25 Mph with Gusts up to 35 Mph.

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  • Temperature Real-Time

Johnston Temperature Statistics

January Temperature

Ankeny Regional Airport (6.8 miles)

  • Lowest 14 January, 2025

    -0.4 °F

  • Average January

    18.5 °F

  • Highest 11 January, 2025

    37.4 °F

Climate (2020–Present)

Ankeny Regional Airport (6.8 miles)

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  • Average Low 2020–2025

    41 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    61.4 °F
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