Mason City Weather Forecast

    • 60
    • 68

    Rain Showers

    • 50
    • 70

    Rain Showers Likely

    • 57
    • 64

    Rain Showers Likely

    • 57
    • 70

    Rain Showers Likely

    • 58
    • 70

    Rain Showers Likely

    • 54
    • 71

    Slight Chance Rain Showers

Today 14 Sep Cerro Gordo

Showers with a slight chance of Thunderstorms this Morning, then Showers with a chance of Thunderstorms this afternoon. Breezy with Highs in the upper 60s. Southeast Winds 15 to 25 Mph with Gusts up to 40 Mph. Chance of rain 80 percent.

Tonight 14 Sep Cerro Gordo

Showers with Thunderstorms likely in the Evening, then a chance of Showers and Thunderstorms after midnight. More humid with Lows around 60. South Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming southwest 10 to 15 Mph after midnight. Chance of rain near 100 percent.

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Mason City Temperature Statistics

September Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 10 September, 2026

    52.6 °F

  • Average September

    73.6 °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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