Chatham Weather Forecast

    • 72
    • 84

    Thunderstorms Likely

    • 70
    • 80

    Rain Showers Likely

    • 68
    • 80

    Rain Showers Likely

    • 67
    • 81

    Chance Thunderstorms

    • 64
    • 77

    Chance Rain Showers

    • 62
    • 73

    Chance Thunderstorms

Today 9 Aug Central Cook

Mostly cloudy. A chance of Showers and Thunderstorms in the late morning and afternoon. Humid with Highs in the mid 80s. South Winds 10 to 15 Mph. Chance of precipitation 50 percent.

Tonight 9 Aug Central Cook

Mostly clear. Lows in the mid 60s. South Winds around 5 Mph.

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Chatham Temperature Statistics

August Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 3 August, 2026

    63 °F

  • Average August

    73.7 °F

  • Highest 4 August, 2026

    84.9 °F

Climate (2021–2026)

Chicago, Chicago Midway Airport (7.5 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    62 °F
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