Mason City Weather Forecast

    • 63
    • 81

    Increasing Clouds

    • 60
    • 81

    Mostly Sunny

    • 55
    • 78

    Mostly Sunny

    • 57
    • 77

    Mostly Cloudy

    • 60
    • 77

    Partly Sunny

    • 62
    • 81

    Slight Chance Thunderstorms

Today 20 Aug Cerro Gordo

Patchy fog this morning. Mostly sunny. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 20 Aug Cerro Gordo

Partly cloudy with a slight chance of Showers and Thunderstorms. Humid with Lows in the lower 60s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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Mason City Temperature Statistics

August Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 6 August, 2026

    51.7 °F

  • Average August

    71.1 °F

  • Highest 11 August, 2026

    85.6 °F

Climate (2021–2026)

Mason City Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    58.6 °F
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