Lake Murphysboro Weather Forecast

    • 72
    • 95

    Becoming Sunny

    • 71
    • 98

    Hot

    • 65
    • 85

    Rain Showers

    • 67
    • 88

    Chance Rain Showers

    • 67
    • 90

    Chance Rain Showers

    • 66
    • 90

    Slight Chance Rain Showers

Today 8 Sep Jackson

Sunny, hot with Highs in the mid 90s. South Winds around 5 Mph.

Tonight 8 Sep Jackson

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 70s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Lake Murphysboro Temperature Statistics

September Temperature

Southern Illinois Airport (7.5 miles)

  • Lowest 1 September, 2026

    70.6 °F

  • Average September

    89.2 °F

  • Highest 5 September, 2026

    100.4 °F

Climate (2021–2026)

Southern Illinois Airport (7.5 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    69.4 °F
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