Grantsburg Weather Forecast

    • 48
    • 53

    Chance Rain Showers

    • 55
    • 62

    Chance Rain Showers

    • 58
    • 67

    Mostly Cloudy

    • 60
    • 70

    Mostly Cloudy

    • 50
    • 68

    Partly Sunny

    • 36
    • 64

    Mostly Cloudy

Today 22 Dec Johnson

Mostly sunny in the Morning, then cloudy with a slight chance of rain Showers in the afternoon. Highs in the lower 50s. South Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 22 Dec Johnson

Partly cloudy. Near steady temperature in the lower 30s. Southeast Winds around 5 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

    34.5 °F

  • Highest 17 December, 2025

    59 °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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