Mason City Weather Forecast

    • 72
    • 90

    Increasing Clouds

    • 74
    • 93

    Mostly Cloudy

    • 69
    • 92

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 67
    • 89

    Slight Chance Thunderstorms

    • 66
    • 88

    Chance Thunderstorms

Today 25 Jul Cerro Gordo

Mostly sunny. Highs around 90. Southwest Winds 5 to 10 Mph. Heat index Values up to 102.

Tonight 25 Jul Cerro Gordo

Partly cloudy in the Evening, then becoming mostly cloudy. Humid with Lows in the lower 70s. South Winds 5 to 10 Mph. Heat index Values up to 103 early in the evening.

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Mason City Temperature Statistics

July Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 22 July, 2026

    53.1 °F

  • Average July

    74.2 °F

  • Highest 16 July, 2026

    90.6 °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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