Jefferson County Fairgrounds Weather Forecast

    • -6
    • 14

    Becoming Sunny

    • -3
    • 12

    Mostly Sunny

    • 2
    • 15

    Partly Sunny

    • 2
    • 19

    Partly Sunny

    • 13
    • 23

    Chance Snow

    • 10
    • 27

    Mostly Cloudy

    • 16
    • 26

    Mostly Cloudy

Today 28 Jan Jefferson

Sunny. Northwest Winds around 10 Mph.

Tonight 28 Jan Jefferson

Mostly clear. Lows around 7 below. Northwest Winds 5 to 10 Mph.

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Jefferson County Fairgrounds Temperature Statistics

January Temperature

Watertown (11.8 miles)

  • Lowest 23 January, 2026

    -17.5 °F

  • Average January

    18.3 °F

  • Highest 9 January, 2026

    55.2 °F

Climate (2021–Present)

Watertown (11.8 miles)

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  • Average Low 2021–2026

    35.6 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    54.4 °F
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