Mason City Weather Forecast

    • 61
    • 69

    Rain Showers

    • 57
    • 71

    Rain Showers Likely

    • 45
    • 65

    Chance Rain Showers

    • 44
    • 64

    Partly Sunny

    • 47
    • 64

    Partly Sunny

    • 42
    • 62

    Mostly Sunny

Today 29 Sep Cerro Gordo

Mostly cloudy. Showers with a slight chance of Thunderstorms this afternoon. Highs in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 29 Sep Cerro Gordo

Cloudy with a slight chance of Thunderstorms. Showers Likely, mainly in the evening. Some Thunderstorms may produce heavy rainfall. Near steady temperature in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Real-Time

Mason City Temperature Statistics

September Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 23 September, 2026

    42.7 °F

  • Average September

    66.5 °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

    58.5 °F
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