Summit Weather Forecast

    • 51
    • 57

    Increasing Clouds

    • 54
    • 63

    Rain Showers

    • 54
    • 67

    Chance Rain Showers

    • 58
    • 66

    Rain Showers Likely

    • 58
    • 71

    Rain Showers Likely

    • 52
    • 68

    Rain Showers Likely

    • 48
    • 63

    Chance Rain Showers

Today 30 Oct Central Cook

Mostly cloudy. Highs around 60.

Tonight 30 Oct Central Cook

Cloudy. A slight chance of Showers until early Morning, then a chance of Showers late. Nearly steady Temperatures in the lower 50s. East Winds 5 to 10 Mph. Chance of precipitation 30 percent.

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Summit Temperature Statistics

October Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 17 October, 2026

    41 °F

  • Average October

    61.8 °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

    46.7 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    61.9 °F
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