Chatham Weather Forecast

    • 18
    • 24

    Snow Likely

    • 15
    • 31

    Chance Snow

    • -3
    • 21

    Partly Sunny

    • -5
    • 3

    Cold

    • -1
    • 8

    Slight Chance Snow Showers

    • 5
    • 13

    Partly Sunny

Today 20 Jan Central Cook

Sunny in the Morning, then becoming partly cloudy. Highs in the lower to mid 20s. Southwest Winds 10 to 15 Mph. Wind chill Values as low as 13 below in the morning.

Tonight 20 Jan Central Cook

Cloudy. A slight chance of snow in the Evening, then snow likely after midnight. Total snow accumulation around an inch possible. Lows around 18. Temperature rising into the upper 20s after midnight. South Winds 5 to 10 Mph. Chance of precipitation 70 percent.

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Chatham Temperature Statistics

January Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 1 January, 2026

    12 °F

  • Average January

    31.7 °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

    54.3 °F

  • Average High 2021–2026

    61.9 °F
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