Summit Weather Forecast

    • 75
    • 91

    Smoke

    • 68
    • 91

    Thunderstorms Likely

    • 68
    • 84

    Mostly Sunny

    • 72
    • 88

    Chance Thunderstorms

    • 66
    • 86

    Slight Chance Rain Showers

    • 64
    • 80

    Mostly Sunny

Today 17 Jul Central Cook

Partly cloudy. Smoke early in the Morning, then Areas of smoke late in the morning. Scattered Showers and Thunderstorms in the late morning and afternoon. Humid with Highs around 90. Southwest Winds 5 to 10 Mph. Chance of precipitation 50 percent.

Tonight 17 Jul Central Cook

Mostly cloudy. Smoke. Near steady temperature in the upper 70s. East Winds around 5 Mph.

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Summit Temperature Statistics

July Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 5 July, 2026

    66.9 °F

  • Average July

    78.7 °F

  • Highest 14 July, 2026

    95 °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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