Forsythe Woods County Forest Preserve Weather Forecast

    • 66
    • 81

    Rain Showers

    • 57
    • 73

    Rain Showers

    • 53
    • 66

    Rain Showers Likely

    • 52
    • 65

    Slight Chance Rain Showers

    • 53
    • 68

    Mostly Cloudy

    • 54
    • 70

    Partly Sunny

Today 19 Sep Southern Will

Showers with Thunderstorms likely in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Humid. Highs in the lower 80s. East Winds 5 to 10 Mph, becoming south in the afternoon. Chance of precipitation near 100 percent.

Tonight 19 Sep Southern Will

Showers with Thunderstorms likely. Humid with Lows in the mid 60s. South Winds around 5 Mph, becoming northwest after midnight. Chance of precipitation 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Forsythe Woods County Forest Preserve Temperature Statistics

September Temperature

Joliet Regional Airport (14.9 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 (14.9 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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