Cook County Forest Preserve Weather Forecast

    • 43
    • 64

    Increasing Clouds

    • 42
    • 56

    Mostly Sunny

    • 51
    • 75

    Chance Rain Showers

    • 45
    • 63

    Partly Sunny

    • 50
    • 67

    Partly Sunny

    • 57
    • 76

    Slight Chance Rain Showers

Today 10 May Northern Cook

Sunny in the Morning, then becoming partly cloudy. Highs in the lower 60s Inland, but only in the mid 50s near the lake. North Winds 5 to 10 Mph, becoming northwest 10 to 15 Mph with Gusts up to 25 Mph inland and east 10 to 15 Mph near the lake in the afternoon.

Tonight 10 May Northern Cook

Mostly cloudy in the Evening, then clearing. Lows in the lower 40s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cook County Forest Preserve Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    32.6 °F

  • Average May

    52.1 °F

  • Highest 4 May, 2026

    80.7 °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

    53.5 °F

  • Average High 2021–2026

    61.9 °F
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