Mason City Weather Forecast

    • 57
    • 69

    Slight Chance Rain Showers

    • 50
    • 66

    Chance Rain Showers

    • 46
    • 58

    Rain Showers Likely

    • 43
    • 60

    Partly Sunny

    • 48
    • 64

    Partly Sunny

    • 52
    • 66

    Slight Chance Rain Showers

    • 54
    • 70

    Mostly Cloudy

Today 19 Sep Cerro Gordo

Partly sunny with a 20 percent chance of Showers. Highs in the upper 60s.

Tonight 19 Sep Cerro Gordo

Cloudy. A chance of Showers with a slight chance of Thunderstorms Early, then a slight chance of Showers this evening. A slight chance of drizzle after midnight. Lows in the mid 50s. North Winds 5 to 10 Mph. Chance of rain 40 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 16 September, 2026

    46.7 °F

  • Average September

    69.4 °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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