Jamestown Weather Forecast

    • 37
    • 39

    Drizzle

    • 35
    • 46

    Mostly Cloudy

    • 39
    • 46

    Mostly Cloudy

    • 11
    • 42

    Chance Rain/Snow

    • 10
    • 19

    Partly Sunny

    • 17
    • 28

    Mostly Cloudy

    • 11
    • 26

    Mostly Cloudy

Today 25 Dec Grant

Cloudy with patchy very light drizzle. Highs in the upper 30s. East Winds 5 to 10 Mph.

Tonight 25 Dec Grant

Cloudy with widespread drizzle. Patchy fog this evening. Areas of fog after midnight. Lows in the mid 30s. Southeast Winds 10 to 15 Mph.

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Jamestown Temperature Statistics

December Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 14 December, 2025

    -7.8 °F

  • Average December

    20.6 °F

  • Highest 23 December, 2025

    43.7 °F

Climate (2020–Present)

Platteville Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    40.7 °F

  • Average 2020–2025

    49.8 °F

  • Average High 2020–2025

    58.6 °F
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