Grantsburg Weather Forecast

    • 44
    • 73

    Mostly Sunny

    • 45
    • 75

    Sunny

    • 45
    • 77

    Sunny

    • 45
    • 75

    Mostly Sunny

    • 46
    • 77

    Partly Sunny

    • 47
    • 76

    Partly Sunny

Today 20 Oct Johnson

Sunny. Near steady temperature in the lower 70s. Northeast Winds around 5 Mph.

Tonight 20 Oct Johnson

Mostly clear. Lows in the mid 40s. Calm Winds.

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Grantsburg Temperature Statistics

October Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 18 October, 2026

    35.4 °F

  • Average October

    65.4 °F

  • Highest 1 October, 2026

    92.1 °F

Climate (2021–2026)

Metropolis Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    49.7 °F

  • Average 2021–2026

    59.9 °F

  • Average High 2021–2026

    70.5 °F
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