Mason City Weather Forecast

    • 66
    • 88

    Mostly Sunny

    • 68
    • 88

    Partly Sunny

    • 68
    • 88

    Chance Thunderstorms

    • 67
    • 87

    Rain Showers Likely

    • 66
    • 86

    Chance Thunderstorms

    • 66
    • 84

    Chance Thunderstorms

Today 17 May Jefferson

Sunny. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 17 May Jefferson

Mostly clear. Near steady temperature in the mid 60s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mason City Temperature Statistics

May Temperature

Birmingham, Birmingham International Airport (8.7 miles)

  • Lowest 3 May, 2026

    41.6 °F

  • Average May

    66.1 °F

  • Highest 10 May, 2026

    84.7 °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

    65.5 °F

  • Average High 2021–2026

    76 °F
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