Cook County Forest Preserve Weather Forecast

    • 5
    • 8

    Cold

    • 2
    • 17

    Mostly Cloudy

    • 1
    • 15

    Mostly Cloudy

    • 4
    • 14

    Partly Sunny

    • 7
    • 17

    Slight Chance Snow

    • 11
    • 23

    Slight Chance Snow

Today 26 Jan Northern Cook

Partly cloudy in the Morning, then clearing. Highs around 8 above. West Winds 10 to 15 Mph. Wind chill Values as low as 22 below.

Tonight 26 Jan Northern Cook

Mostly cloudy and Blustery. Lows around 4 above. Temperature rising to around 13 after midnight. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Wind chill Values as low as 13 below in the evening.

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Cook County Forest Preserve Temperature Statistics

January Temperature

Chicago, Chicago-O'Hare International Airport (2.5 miles)

  • Lowest 23 January, 2026

    -11 °F

  • Average January

    26.6 °F

  • Highest 8 January, 2026

    60.7 °F

Climate (2021–Present)

Chicago, Chicago-O'Hare International Airport (2.5 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    61.7 °F
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