Cook County Forest Preserve Weather Forecast

    • 51
    • 66

    Chance Rain Showers

    • 59
    • 73

    Chance Rain Showers

    • 60
    • 84

    Rain Showers Likely

    • 67
    • 87

    Slight Chance Thunderstorms

    • 69
    • 89

    Chance Thunderstorms

    • 56
    • 85

    Rain Showers Likely

    • 51
    • 71

    Slight Chance Rain Showers

Today 14 May Northern Cook

Sunny. Highs in the upper 60s Inland, but only in the upper 50s near the lake. Southeast Winds 5 to 10 Mph.

Tonight 14 May Northern Cook

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Showers late. Lows around 50. Southeast Winds 5 to 10 Mph. Chance of precipitation 30 percent.

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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

    53.4 °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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