Washington County Park Weather Forecast

    • 38
    • 44

    Rain Showers

    • 18
    • 48

    Rain/Snow

    • 24
    • 35

    Rain/Snow Likely

    • 12
    • 31

    Snow Showers Likely

    • 15
    • 23

    Snow Showers Likely

    • 21
    • 34

    Snow Showers Likely

    • 16
    • 29

    Chance Snow Showers

Today 18 Dec Jefferson

Partly sunny and windy. Highs in the mid 40s. South Winds 20 to 30 Mph.

Tonight 18 Dec Jefferson

Showers from late evening on. Very windy. Early overnight Lows in the upper 30s, then Temperatures rising into the upper 40s. South Winds 30 to 40 Mph with Gusts up to 60 Mph. Chance of rain near 100 percent.

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Washington County Park Temperature Statistics

December Temperature

Watertown, Watertown International Airport (13.7 miles)

  • Lowest 5 December, 2025

    -6 °F

  • Average December

    22.6 °F

  • Highest 3 December, 2025

    36 °F

Climate (2020–Present)

Watertown, Watertown International Airport (13.7 miles)

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  • Average Low 2020–2025

    38.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    57.6 °F
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