Mason City Weather Forecast

    • 70
    • 85

    Chance Rain Showers

    • 67
    • 90

    Slight Chance Thunderstorms

    • 67
    • 87

    Chance Thunderstorms

    • 64
    • 83

    Slight Chance Thunderstorms

    • 67
    • 81

    Chance Rain Showers

    • 67
    • 87

    Rain Showers Likely

    • 62
    • 84

    Slight Chance Rain Showers

Today 3 Sep Cerro Gordo

Showers likely with a slight chance of Thunderstorms. Near steady temperature in the mid 70s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 3 Sep Cerro Gordo

Mostly clear. A chance of Showers with a slight chance of Thunderstorms early. A slight chance of Showers and Thunderstorms after midnight. Humid with Lows around 70. South Winds 10 to 15 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mason City Temperature Statistics

September Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 1 September, 2026

    63 °F

  • Average September

    75.1 °F

  • Highest 1 September, 2026

    86 °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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