The Gap Weather Forecast

    • 38
    • 42

    Mostly Cloudy

    • 34
    • 45

    Mostly Cloudy

    • 41
    • 42

    Rain Likely

    • 45
    • 45

    Chance Rain

    • 38
    • 51

    Mostly Cloudy

    • 30
    • 49

    Mostly Cloudy

Today 22 Dec Central Cook

Mostly cloudy. A slight chance of Sprinkles in the afternoon. Highs in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Dec Central Cook

Mostly cloudy. A slight chance of Sprinkles early in the evening. Near steady temperature in the upper 30s. Southwest Winds around 10 Mph.

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The Gap Temperature Statistics

December Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 14 December, 2025

    -0.9 °F

  • Average December

    24.1 °F

  • Highest 18 December, 2025

    52 °F

Climate (2020–Present)

Chicago, Chicago Midway Airport (7.5 miles)

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  • Average Low 2020–2025

    46.7 °F

  • Average 2020–2025

    54.3 °F

  • Average High 2020–2025

    61.8 °F
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