Chatham Weather Forecast

    • 55
    • 61

    Rain Showers

    • 57
    • 68

    Partly Sunny

    • 62
    • 73

    Rain Showers Likely

    • 52
    • 71

    Rain Showers Likely

    • 48
    • 61

    Chance Rain Showers

    • 52
    • 64

    Mostly Sunny

Today 15 Oct Central Cook

Cloudy. Scattered Showers early in the Morning, then isolated Showers late in the morning. Near steady temperature in the upper 50s. East Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 15 Oct Central Cook

Mostly cloudy. Lows in the mid 50s. East Winds around 5 Mph.

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Chatham Temperature Statistics

October Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 9 October, 2025

    48.9 °F

  • Average October

    67 °F

  • Highest 3 October, 2025

    89.1 °F

Climate (2020–Present)

Chicago, Chicago Midway Airport (7.5 miles)

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  • Average Low 2020–2025

    46.8 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    62 °F
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