Old School Forest Preserve Weather Forecast

    • 68
    • 82

    Rain Showers Likely

    • 48
    • 79

    Chance Thunderstorms

    • 43
    • 57

    Partly Sunny

    • 47
    • 58

    Mostly Cloudy

    • 51
    • 64

    Slight Chance Rain Showers

    • 54
    • 68

    Partly Sunny

Today 18 May Lake

Mostly cloudy. Showers likely in the morning. A chance of Thunderstorms. A chance of Showers in the afternoon. Breezy. Highs in the lower 80s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

Tonight 18 May Lake

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Breezy with Lows in the upper 60s. South Winds 10 to 15 Mph, increasing to 15 to 20 Mph after midnight. Gusts up to 30 Mph. Chance of precipitation 70 percent.

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Old School Forest Preserve Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    53.6 °F

  • Highest 16 May, 2026

    82.9 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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