St. Pat's Weather Forecast

    • 56
    • 65

    Mostly Cloudy

    • 54
    • 69

    Partly Sunny

    • 50
    • 68

    Partly Sunny

    • 52
    • 66

    Mostly Cloudy

    • 54
    • 69

    Mostly Cloudy

    • 57
    • 73

    Partly Sunny

Today 23 Sep Northern Will

Mostly cloudy. Highs in the mid 60s. Northeast Winds 10 to 15 Mph.

Tonight 23 Sep Northern Will

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. Northeast Winds 5 to 10 Mph.

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St. Pat's Temperature Statistics

September Temperature

Joliet Regional Airport (3.7 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    74.4 °F

  • Highest 2 September, 2026

    95.9 °F

Climate (2021–2026)

Joliet Regional Airport (3.7 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    63.3 °F
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