Campbell Lake Weather Forecast

    • 73
    • 99

    Hot

    • 73
    • 98

    Hot

    • 73
    • 98

    Hot

    • 71
    • 96

    Mostly Sunny

    • 70
    • 95

    Partly Sunny

    • 64
    • 89

    Chance Rain Showers

Today 15 Sep Jackson

Sunny, hot with Highs in the upper 90s. South Winds 5 to 10 Mph. Highest heat index Readings heat index Readings up to 106 this afternoon.

Tonight 15 Sep Jackson

Mostly clear. Lows in the lower 70s. South Winds around 5 Mph.

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Campbell Lake Temperature Statistics

September Temperature

Southern Illinois Airport (11.8 miles)

  • Lowest 8 September, 2026

    58.6 °F

  • Average September

    82.2 °F

  • Highest 5 September, 2026

    103.6 °F

Climate (2021–2026)

Southern Illinois Airport (11.8 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    58.9 °F

  • Average High 2021–2026

    69.5 °F
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