Grantsburg Weather Forecast

    • 34
    • 47

    Increasing Clouds

    • 25
    • 47

    Slight Chance Rain/Snow

    • 23
    • 37

    Mostly Sunny

    • 38
    • 47

    Mostly Cloudy

    • 29
    • 50

    Mostly Cloudy

    • 26
    • 43

    Slight Chance Rain Showers

Today 6 Dec Johnson

Mostly sunny. Highs in the mid 40s. South Winds around 5 Mph.

Tonight 6 Dec Johnson

Mostly cloudy. Near steady temperature in the mid 30s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantsburg Temperature Statistics

December Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 1 December, 2025

    26.2 °F

  • Average December

    29.8 °F

  • Highest 1 December, 2025

    35.2 °F

Climate (2021–Present)

Metropolis Municipal Airport (14.3 miles)

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  • Average Low 2021–2025

    49.2 °F

  • Average 2021–2025

    59.4 °F

  • Average High 2021–2025

    69.9 °F
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