Chatham Weather Forecast

    • 51
    • 77

    Chance Thunderstorms

    • 44
    • 57

    Partly Sunny

    • 49
    • 58

    Chance Rain Showers

    • 57
    • 76

    Slight Chance Thunderstorms

    • 60
    • 85

    Chance Thunderstorms

    • 62
    • 84

    Rain Showers Likely

Today 12 May Central Cook

Mostly cloudy. Scattered Showers in the afternoon. A slight chance of Thunderstorms late. Windy. Highs in the upper 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph, becoming southwest 15 to 25 Mph with Gusts up to 40 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 12 May Central Cook

Mostly cloudy in the Evening, then clearing. Scattered Showers with a slight chance of Thunderstorms early in the evening. Breezy with Lows in the lower 50s. West Winds 15 to 20 Mph with Gusts up to 35 Mph, becoming northwest 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of precipitation 50 percent.

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Chatham Temperature Statistics

May Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 2 May, 2026

    33.1 °F

  • Average May

    54.1 °F

  • Highest 4 May, 2026

    80.1 °F

Climate (2021–Present)

Chicago, Chicago Midway Airport (7.5 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    62 °F
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