Mason City Weather Forecast

    • 60
    • 78

    Decreasing Clouds

    • 57
    • 82

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 61
    • 83

    Partly Sunny

    • 65
    • 87

    Partly Sunny

    • 67
    • 89

    Partly Sunny

Today 12 May Jefferson

Partly sunny. Highs around 80. East Winds around 5 Mph.

Tonight 12 May Jefferson

Mostly cloudy. Lows in the upper 50s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • 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

    63.9 °F

  • Highest 4 May, 2026

    80.7 °F

Climate (2021–Present)

Birmingham, Birmingham International Airport (8.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    55.5 °F

  • Average 2021–2026

    65.4 °F

  • Average High 2021–2026

    76 °F
Get WillyWeather+ to remove ads