Chatham Weather Forecast

    • 2
    • 15

    Decreasing Clouds

    • 2
    • 15

    Partly Sunny

    • 4
    • 13

    Partly Sunny

    • 9
    • 16

    Chance Snow

    • 8
    • 23

    Mostly Cloudy

    • 15
    • 24

    Mostly Cloudy

Today 27 Jan Central Cook

Mostly cloudy. Areas of blowing and Drifting snow. A chance of Flurries in the afternoon. Blustery. Near steady temperature around 13. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 27 Jan Central Cook

Mostly clear. Lows around 2 above. West Winds 5 to 10 Mph. Wind chill Values as low as 13 below after midnight.

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Chatham Temperature Statistics

January Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 23 January, 2026

    -9 °F

  • Average January

    25.7 °F

  • Highest 8 January, 2026

    60.1 °F

Climate (2021–Present)

Chicago, Chicago Midway Airport (7.5 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.8 °F
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