Summit Weather Forecast

    • 61
    • 77

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 60
    • 74

    Rain Showers Likely

    • 57
    • 72

    Partly Sunny

    • 60
    • 75

    Slight Chance Thunderstorms

    • 60
    • 76

    Slight Chance Thunderstorms

Today 19 Jun Central Cook

Mostly sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph.

Tonight 19 Jun Central Cook

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers with a slight chance of Thunderstorms. Lows in the lower 60s. West Winds 5 to 10 Mph. Chance of precipitation 30 percent.

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Summit Temperature Statistics

June Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 15 June, 2026

    54 °F

  • Average June

    71.8 °F

  • Highest 10 June, 2026

    90 °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

    62 °F
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