Old School Forest Preserve Weather Forecast

    • 62
    • 78

    Rain Showers

    • 66
    • 70

    Rain Showers Likely

    • 63
    • 75

    Rain Showers Likely

    • 66
    • 76

    Chance Rain Showers

    • 63
    • 81

    Chance Thunderstorms

    • 59
    • 75

    Chance Rain Showers

Today 15 Sep Lake

Mostly cloudy. Showers early in the morning. A chance of Thunderstorms. A chance of Showers in the late morning and afternoon. More humid with Highs in the upper 70s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming west 5 to 10 Mph in the afternoon. Chance of precipitation 80 percent.

Tonight 15 Sep Lake

Mostly cloudy. A slight chance of Showers and Thunderstorms early in the evening. A slight chance of Showers and Thunderstorms late. Lows in the lower 60s. Northwest Winds 5 to 10 Mph, becoming north after midnight. Chance of precipitation 20 percent.

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  • Temperature Real-Time

Old School Forest Preserve Temperature Statistics

September Temperature

Chicago / Wheeling, Pal-Waukee Airport (9.9 miles)

  • Lowest 11 September, 2026

    56.6 °F

  • Average September

    75.9 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

Chicago / Wheeling, Pal-Waukee Airport (9.9 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    61.6 °F
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