Jamestown Weather Forecast

    • -9
    • 6

    Cold

    • -3
    • 7

    Cold

    • 13
    • 26

    Mostly Cloudy

    • 26
    • 34

    Mostly Cloudy

    • 28
    • 37

    Chance Rain/Snow

    • 9
    • 39

    Partly Sunny

    • 21
    • 28

    Mostly Cloudy

Today 13 Dec Grant

Partly sunny. Much Colder with Highs around 6 above. Northwest Winds 10 to 15 Mph. Wind chill Values as low as 15 below.

Tonight 13 Dec Grant

Partly cloudy. Cold with Lows around 10 below. Northwest Winds 5 to 10 Mph. Wind chill Values as low as 25 below.

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Jamestown Temperature Statistics

December Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 4 December, 2025

    -3.3 °F

  • Average December

    20 °F

  • Highest 10 December, 2025

    38.7 °F

Climate (2020–Present)

Platteville Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    49.9 °F

  • Average High 2020–2025

    58.6 °F
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