St. Pat's Weather Forecast

    • 62
    • 75

    Chance Thunderstorms

    • 65
    • 76

    Rain Showers

    • 56
    • 70

    Rain Showers Likely

    • 53
    • 64

    Chance Rain Showers

    • 52
    • 64

    Slight Chance Rain Showers

    • 52
    • 67

    Mostly Cloudy

Today 18 Sep Northern Will

Mostly cloudy. Isolated Showers. Near steady temperature in the lower 70s. East Winds 10 to 15 Mph. Chance of precipitation 20 percent.

Tonight 18 Sep Northern Will

Mostly cloudy. A chance of Showers and Thunderstorms after midnight. Showers and Thunderstorms likely late. Lows in the lower 60s. East Winds around 10 Mph. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St. Pat's Temperature Statistics

September Temperature

Joliet Regional Airport (3.7 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    75.4 °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

    63.4 °F
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