Grand Tower Weather Forecast

    • 51
    • 73

    Becoming Sunny

    • 54
    • 80

    Mostly Sunny

    • 58
    • 81

    Mostly Sunny

    • 42
    • 86

    Partly Sunny

    • 37
    • 58

    Partly Sunny

    • 40
    • 61

    Mostly Cloudy

Today 19 Mar Jackson

Partly sunny in the Morning, then clearing. Highs in the lower 70s. South Winds around 5 Mph.

Tonight 19 Mar Jackson

Mostly clear in the Evening, then becoming partly cloudy. Lows around 50. South Winds around 5 Mph.

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Grand Tower Temperature Statistics

March Temperature

Southern Illinois Airport (17.4 miles)

  • Lowest 16 March, 2026

    26.1 °F

  • Average March

    54.4 °F

  • Highest 10 March, 2026

    78.1 °F

Climate (2021–Present)

Southern Illinois Airport (17.4 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    69 °F
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