Chatham Weather Forecast

    • 62
    • 73

    Increasing Clouds

    • 70
    • 85

    Mostly Sunny

    • 62
    • 83

    Rain Showers Likely

    • 55
    • 68

    Chance Rain Showers

    • 51
    • 66

    Rain Showers Likely

    • 41
    • 59

    Mostly Cloudy

    • 40
    • 54

    Mostly Sunny

Today 11 Oct Central Cook

Mostly sunny. Highs around 60.

Tonight 11 Oct Central Cook

Clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. South Winds 5 to 10 Mph.

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Chatham Temperature Statistics

October Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 3 October, 2026

    48.9 °F

  • Average October

    62.8 °F

  • Highest 7 October, 2026

    79 °F

Climate (2021–2026)

Chicago, Chicago Midway Airport (7.5 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.8 °F
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