Summit Weather Forecast

    • -2
    • 18

    Snow

    • 5
    • 8

    Cold

    • 2
    • 17

    Mostly Cloudy

    • 1
    • 15

    Partly Sunny

    • 4
    • 14

    Partly Sunny

    • 7
    • 17

    Partly Sunny

    • 11
    • 23

    Partly Sunny

Today 25 Jan Central Cook

Snow in the late morning and early Afternoon, then a chance of snow late. Snow may be heavy at Times in the late morning and early afternoon. Snow accumulation of 1 to 3 Inches. Highs around 19. North Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon. Chance of precipitation near 100 percent.

Tonight 25 Jan Central Cook

Mostly cloudy. Scattered snow Showers early in the evening. Little or no snow accumulation. Lows around 1 below. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 50 percent. Wind chill Values as low as 19 below.

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Summit Temperature Statistics

January Temperature

Chicago, Chicago Midway Airport (2.5 miles)

  • Lowest 23 January, 2026

    -9 °F

  • Average January

    26.8 °F

  • Highest 8 January, 2026

    60.1 °F

Climate (2021–Present)

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

    61.8 °F
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