Mazon Weather Forecast

    • 52
    • 80

    Chance Thunderstorms

    • 42
    • 67

    Partly Sunny

    • 49
    • 70

    Chance Rain Showers

    • 59
    • 77

    Chance Thunderstorms

    • 60
    • 86

    Chance Thunderstorms

    • 65
    • 87

    Chance Thunderstorms

Today 12 May Grundy

Partly cloudy in the Morning, then becoming mostly cloudy. Patchy blowing dust in the afternoon. Scattered Showers and a slight chance of Thunderstorms late. Windy. Highs around 80. South Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming southwest 15 to 25 Mph with Gusts up to 40 Mph in the afternoon. Chance of precipitation 40 percent.

Tonight 12 May Grundy

Mostly cloudy in the Evening, then clearing. Scattered Showers with a chance of Thunderstorms early in the evening. Breezy with Lows in the lower 50s. West Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming northwest 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of precipitation 50 percent.

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Mazon Temperature Statistics

May Temperature

Joliet Regional Airport (22.4 miles)

  • Lowest 2 May, 2026

    29.8 °F

  • Average May

    54.7 °F

  • Highest 4 May, 2026

    81.7 °F

Climate (2021–Present)

Joliet Regional Airport (22.4 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    63.4 °F
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