Mason City Weather Forecast

    • 56
    • 79

    Chance Rain Showers

    • 58
    • 80

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 60
    • 80

    Partly Sunny

    • 63
    • 85

    Mostly Sunny

Today 11 May Jefferson

Mostly cloudy. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 11 May Jefferson

Mostly cloudy in the Evening, then becoming partly cloudy. Less humid with Lows in the mid 50s. North Winds 5 to 10 Mph.

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Mason City Temperature Statistics

May Temperature

Birmingham, Birmingham International Airport (8.7 miles)

  • Lowest 3 May, 2026

    41.6 °F

  • Average May

    63.4 °F

  • Highest 4 May, 2026

    80.7 °F

Climate (2021–Present)

Birmingham, Birmingham International Airport (8.7 miles)

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  • Average Low 2021–2026

    55.5 °F

  • Average 2021–2026

    65.4 °F

  • Average High 2021–2026

    76 °F
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