Oak Forest Weather Forecast

    • 18
    • 42

    Becoming Sunny

    • 22
    • 31

    Partly Sunny

    • 37
    • 43

    Cloudy

    • 33
    • 47

    Mostly Cloudy

    • 46
    • 46

    Rain Likely

    • 41
    • 57

    Mostly Cloudy

    • 35
    • 50

    Mostly Cloudy

Today 20 Dec Southern Cook

Mostly cloudy. Breezy. Highs in the lower 40s. Southwest Winds 15 to 20 Mph, becoming west 10 to 15 Mph in the afternoon. Gusts up to 30 Mph.

Tonight 20 Dec Southern Cook

Mostly clear. Blustery. Lows around 19. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Oak Forest Temperature Statistics

December Temperature

Lansing Municipal Airport (11.8 miles)

  • Lowest 14 December, 2025

    0.1 °F

  • Average December

    23.7 °F

  • Highest 18 December, 2025

    50.9 °F

Climate (2020–Present)

Lansing Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    60.3 °F
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