Grant River Recreation Area Weather Forecast

    • 27
    • 43

    Mostly Cloudy

    • 34
    • 39

    Cloudy

    • 38
    • 40

    Cloudy

    • 34
    • 45

    Mostly Cloudy

    • 18
    • 46

    Mostly Cloudy

    • 10
    • 27

    Partly Sunny

Today 23 Dec Grant

Partly sunny. Highs in the lower 40s. Northwest Winds 5 to 10 Mph.

Tonight 23 Dec Grant

Partly cloudy. Lows in the upper 20s. Light Winds.

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Grant River Recreation Area Temperature Statistics

December Temperature

Platteville Municipal Airport (13 miles)

  • Lowest 14 December, 2025

    -7.8 °F

  • Average December

    19.1 °F

  • Highest 18 December, 2025

    39 °F

Climate (2020–Present)

Platteville Municipal Airport (13 miles)

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  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    49.8 °F

  • Average High 2020–2025

    58.6 °F
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