Mason City Weather Forecast

    • 70
    • 85

    Chance Thunderstorms

    • 66
    • 85

    Chance Thunderstorms

    • 59
    • 79

    Partly Sunny

    • 58
    • 78

    Mostly Sunny

    • 58
    • 79

    Mostly Sunny

    • 57
    • 80

    Partly Sunny

Today 17 Aug Cerro Gordo

Mostly sunny. Highs in the mid 80s. Southeast Winds 5 to 10 Mph.

Tonight 17 Aug Cerro Gordo

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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Mason City Temperature Statistics

August Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 3 August, 2025

    51.7 °F

  • Average August

    70.1 °F

  • Highest 8 August, 2025

    88.6 °F

Climate (2020–Present)

Mason City Municipal Airport (6.2 miles)

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  • Average Low 2020–2025

    36.9 °F

  • Average 2020–2025

    47.6 °F

  • Average High 2020–2025

    58.2 °F
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