Mason City Weather Forecast

    • 49
    • 69

    Decreasing Clouds

    • 57
    • 68

    Chance Rain Showers

    • 57
    • 74

    Rain Showers

    • 60
    • 73

    Rain Showers

    • 54
    • 74

    Chance Rain Showers

    • 49
    • 67

    Partly Sunny

Today 15 Sep Cerro Gordo

Mostly cloudy. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 15 Sep Cerro Gordo

Mostly cloudy. Lows around 50. North Winds around 5 Mph.

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Mason City Temperature Statistics

September Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 13 September, 2026

    46.9 °F

  • Average September

    71.5 °F

  • Highest 4 September, 2026

    90.6 °F

Climate (2021–2026)

Mason City Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    37.3 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    58.6 °F
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