Grantsburg Weather Forecast

    • 19
    • 42

    Increasing Clouds

    • 8
    • 24

    Mostly Cloudy

    • 12
    • 17

    Snow

    • 2
    • 19

    Chance Snow

    • 5
    • 21

    Mostly Sunny

    • 17
    • 31

    Mostly Cloudy

Today 22 Jan Johnson

Mostly sunny. Highs around 40. North Winds around 5 Mph.

Tonight 22 Jan Johnson

Mostly clear in the Evening, then becoming mostly cloudy. Lows around 18. Northeast Winds around 5 Mph, increasing to north 10 to 15 Mph with Gusts up to 25 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantsburg Temperature Statistics

January Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 12 January, 2026

    21.2 °F

  • Average January

    43.5 °F

  • Highest 8 January, 2026

    68.9 °F

Climate (2021–Present)

Metropolis Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    48.8 °F

  • Average 2021–2026

    59 °F

  • Average High 2021–2026

    69.4 °F
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