Jefferson County Fairgrounds Weather Forecast

    • 0
    • 20

    Increasing Clouds

    • 15
    • 23

    Chance Snow

    • 28
    • 35

    Rain/Snow

    • 10
    • 34

    Slight Chance Snow

    • 3
    • 23

    Chance Snow

    • -4
    • 14

    Mostly Cloudy

Today 7 Dec Jefferson

Partly sunny late in the morning then clearing. Highs around 20. North Winds 5 to 15 Mph.

Tonight 7 Dec Jefferson

Colder. Partly cloudy through around midnight then becoming mostly cloudy. Lows near zero. North Winds up to 5 Mph.

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Jefferson County Fairgrounds Temperature Statistics

December Temperature

Watertown (11.8 miles)

  • Lowest 4 December, 2025

    -1.1 °F

  • Average December

    16.2 °F

  • Highest 3 December, 2025

    29.8 °F

Climate (2020–Present)

Watertown (11.8 miles)

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  • Average Low 2020–2025

    35.8 °F

  • Average 2020–2025

    45.5 °F

  • Average High 2020–2025

    54.6 °F
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