Grand Crossing Weather Forecast

    • 66
    • 69

    Rain Showers

    • 58
    • 68

    Rain Showers Likely

    • 54
    • 65

    Chance Rain Showers

    • 55
    • 64

    Mostly Cloudy

    • 56
    • 65

    Mostly Cloudy

    • 56
    • 66

    Mostly Cloudy

Today 19 Sep Central Cook

Partly cloudy. Highs in the lower 70s.

Tonight 19 Sep Central Cook

Showers and a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Humid. Near steady temperature in the upper 60s. East Winds around 5 Mph, becoming west after midnight. Chance of precipitation near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Crossing Temperature Statistics

September Temperature

Chicago, Chicago Midway Airport (8.1 miles)

  • Lowest 14 September, 2026

    53.1 °F

  • Average September

    75.7 °F

  • Highest 2 September, 2026

    96.1 °F

Climate (2021–2026)

Chicago, Chicago Midway Airport (8.1 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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