Summit Weather Forecast

    • 60
    • 72

    Chance Rain Showers

    • 63
    • 77

    Partly Sunny

    • 74
    • 85

    Partly Sunny

    • 78
    • 93

    Partly Sunny

    • 78
    • 96

    Mostly Sunny

    • 78
    • 97

    Hot

Today 26 Jun Central Cook

Mostly cloudy. A slight chance of Showers early in the Morning, then a chance of Showers in the late morning and afternoon. Highs in the upper 60s. Northeast Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 26 Jun Central Cook

Mostly cloudy in the Evening, then becoming partly cloudy. A slight chance of Showers in the evening. Lows in the lower 60s. Northeast Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight. Chance of precipitation 20 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

    70.1 °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

    61.9 °F
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