Grantsburg Weather Forecast

    • 17
    • 31

    Partly Sunny

    • 25
    • 36

    Mostly Sunny

    • 26
    • 45

    Partly Sunny

    • 25
    • 42

    Partly Sunny

    • 29
    • 43

    Mostly Cloudy

    • 24
    • 44

    Partly Sunny

Today 29 Dec Johnson

Mostly sunny. Much cooler with Highs around 30. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 29 Dec Johnson

Partly cloudy in the Evening, then clearing. Lows around 17. Northwest Winds 5 to 10 Mph.

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Grantsburg Temperature Statistics

December Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 14 December, 2025

    9.5 °F

  • Average December

    40.3 °F

  • Highest 24 December, 2025

    69.8 °F

Climate (2021–Present)

Metropolis Municipal Airport (14.3 miles)

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  • Average Low 2021–2025

    49 °F

  • Average 2021–2025

    59.2 °F

  • Average High 2021–2025

    69.6 °F
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