Chatham Weather Forecast

    • 31
    • 38

    Increasing Clouds

    • 39
    • 52

    Mostly Cloudy

    • 50
    • 65

    Mostly Cloudy

    • 33
    • 73

    Chance Rain Showers

    • 30
    • 39

    Mostly Sunny

    • 37
    • 51

    Partly Sunny

Today 23 Mar Central Cook

Partly cloudy in the morning then clearing. Highs in the lower 40s Inland, but only in the upper 30s near the lake. North Winds 10 to 15 Mph.

Tonight 23 Mar Central Cook

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower 30s. East Winds 5 to 10 Mph, becoming south after midnight.

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Chatham Temperature Statistics

March Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 16 March, 2026

    21 °F

  • Average March

    42.3 °F

  • Highest 6 March, 2026

    73 °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

    54.3 °F

  • Average High 2021–2026

    61.9 °F
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