Summit Weather Forecast

    • 39
    • 55

    Decreasing Clouds

    • 41
    • 58

    Sunny

    • 43
    • 63

    Sunny

    • 46
    • 67

    Mostly Sunny

    • 49
    • 69

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 53
    • 72

    Partly Sunny

Today 16 Oct Central Cook

Partly cloudy. Highs in the lower 70s.

Tonight 16 Oct Central Cook

Mostly cloudy in the evening then clearing. Breezy. Lows in the upper 30s. North Winds 15 to 25 Mph with Gusts up to 30 Mph, Diminishing to 10 to 15 Mph after midnight.

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Summit Temperature Statistics

October Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 3 October, 2026

    48.9 °F

  • Average October

    65.4 °F

  • Highest 12 October, 2026

    88 °F

Climate (2021–2026)

Chicago, Chicago Midway Airport (2.5 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.8 °F
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