Mazon Weather Forecast

    • 65
    • 79

    Mostly Cloudy

    • 75
    • 87

    Slight Chance Thunderstorms

    • 78
    • 93

    Mostly Sunny

    • 77
    • 94

    Mostly Sunny

    • 77
    • 95

    Slight Chance Thunderstorms

    • 75
    • 94

    Partly Sunny

Today 27 Jun Grundy

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

Tonight 27 Jun Grundy

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 60s. East Winds 5 to 10 Mph.

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Mazon Temperature Statistics

June Temperature

Joliet Regional Airport (22.4 miles)

  • Lowest 3 June, 2026

    47.7 °F

  • Average June

    70.6 °F

  • Highest 6 June, 2026

    91.2 °F

Climate (2021–2026)

Joliet Regional Airport (22.4 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    63.3 °F
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