River Forest Weather Forecast

    • 48
    • 65

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 52
    • 74

    Partly Sunny

    • 52
    • 69

    Partly Sunny

    • 53
    • 68

    Mostly Sunny

    • 58
    • 71

    Mostly Sunny

Today 5 Oct Central Cook

Sunny. Highs in the mid 60s. North Winds 5 to 10 Mph, becoming northeast in the afternoon.

Tonight 5 Oct Central Cook

Clear. Lows in the upper 40s. Southeast Winds around 5 Mph.

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River Forest Temperature Statistics

October Temperature

Chicago, Chicago-O'Hare International Airport (6.8 miles)

  • Lowest 2 October, 2026

    52 °F

  • Average October

    62.2 °F

  • Highest 1 October, 2026

    70 °F

Climate (2021–2026)

Chicago, Chicago-O'Hare International Airport (6.8 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    61.9 °F
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