Mason City Weather Forecast

    • 63
    • 84

    Becoming Sunny

    • 64
    • 86

    Sunny

    • 65
    • 87

    Sunny

    • 66
    • 88

    Sunny

    • 66
    • 89

    Mostly Sunny

    • 68
    • 88

    Slight Chance Thunderstorms

Today 11 Jul Cerro Gordo

Patchy fog Early, then Areas of fog this morning. Partly cloudy. Humid with Highs in the mid 80s. Light and variable Winds, becoming southeast around 5 Mph.

Tonight 11 Jul Cerro Gordo

Mostly clear. Humid with Lows in the lower 60s. Southeast Winds around 5 Mph.

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Mason City Temperature Statistics

July Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 5 July, 2026

    62.7 °F

  • Average July

    74.5 °F

  • Highest 7 July, 2026

    87.7 °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

    58.5 °F
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