Summit Weather Forecast

    • 51
    • 66

    Increasing Clouds

    • 59
    • 73

    Chance Rain Showers

    • 60
    • 84

    Rain Showers

    • 67
    • 87

    Slight Chance Thunderstorms

    • 69
    • 89

    Chance Thunderstorms

    • 57
    • 85

    Rain Showers Likely

    • 51
    • 72

    Slight Chance Rain Showers

Today 14 May Central Cook

Sunny. Near steady temperature in the lower 60s. East Winds 5 to 10 Mph.

Tonight 14 May Central Cook

Mostly clear in the Evening, then becoming mostly cloudy. A slight chance of Showers late. Lows in the lower 50s. Southeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Temperature Statistics

May Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 2 May, 2026

    33.1 °F

  • Average May

    54.2 °F

  • Highest 4 May, 2026

    80.1 °F

Climate (2021–Present)

Chicago, Chicago Midway Airport (2.5 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    62 °F
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