Rosemont Weather Forecast

    • 53
    • 71

    Mostly Cloudy

    • 57
    • 74

    Decreasing Clouds

    • 57
    • 77

    Partly Sunny

    • 56
    • 77

    Sunny

    • 63
    • 82

    Mostly Sunny

    • 68
    • 87

    Mostly Cloudy

    • 68
    • 87

    Chance Thunderstorms

Today 30 May Central Cook

Mostly cloudy. Temperatures in the lower 70s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 30 May Central Cook

Mostly cloudy. Lows in the mid 50s. East Winds around 10 Mph.

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  • Temperature Real-Time

Rosemont Temperature Statistics

May Temperature

Chicago, Chicago-O'Hare International Airport (1.2 miles)

  • Lowest 2 May, 2026

    32.6 °F

  • Average May

    60.2 °F

  • Highest 17 May, 2026

    87.7 °F

Climate (2021–Present)

Chicago, Chicago-O'Hare International Airport (1.2 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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