Jackson SPB Weather Forecast

    • 56
    • 84

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

    • 61
    • 86

    Partly Sunny

    • 62
    • 80

    Mostly Cloudy

    • 61
    • 76

    Chance Rain Showers

    • 62
    • 78

    Chance Rain Showers

Today 16 Sep McHenry

Mostly sunny. Highs in the lower 80s. East Winds 5 to 10 Mph.

Tonight 16 Sep McHenry

Mostly clear. Lows in the mid 50s. East Winds 5 to 10 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Jackson SPB Temperature Statistics

September Temperature

Chicago / West Chicago, Dupage Airport (23.6 miles)

  • Lowest 7 September, 2025

    44.1 °F

  • Average September

    64 °F

  • Highest 14 September, 2025

    84.9 °F

Climate (2020–Present)

Chicago / West Chicago, Dupage Airport (23.6 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    61.3 °F
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