Mason City Weather Forecast

    • 48
    • 68

    Chance Rain Showers

    • 60
    • 73

    Rain Showers

    • 52
    • 69

    Chance Rain Showers

    • 57
    • 64

    Rain Showers Likely

    • 53
    • 68

    Chance Rain Showers

    • 53
    • 70

    Chance Rain Showers

Today 13 Sep Cerro Gordo

Partly sunny. A chance of Showers in the morning. Highs in the upper 60s. North Winds around 5 Mph. Chance of rain 40 percent.

Tonight 13 Sep Cerro Gordo

Mostly clear. Near steady temperature in the lower 50s. Northwest Winds around 5 Mph.

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Mason City Temperature Statistics

September Temperature

Mason City Municipal Airport (6.2 miles)

  • Lowest 10 September, 2026

    53.1 °F

  • Average September

    74.2 °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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