Grantfork Weather Forecast

    • 32
    • 39

    Mostly Cloudy

    • 17
    • 39

    Chance Snow

    • 21
    • 31

    Partly Sunny

    • 35
    • 46

    Mostly Cloudy

    • 25
    • 46

    Chance Rain

    • 20
    • 40

    Mostly Cloudy

Today 6 Dec Madison

Partly sunny. Highs in the upper 30s. West Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 6 Dec Madison

Mostly cloudy. A chance of rain after midnight. Near steady temperature in the lower 30s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

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Grantfork Temperature Statistics

December Temperature

St. Louis Regional Airport (19.9 miles)

  • Lowest 3 December, 2025

    15.3 °F

  • Average December

    24.5 °F

  • Highest 3 December, 2025

    35.6 °F

Climate (2020–Present)

St. Louis Regional Airport (19.9 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    66.2 °F
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