Grass Lake Weather Forecast

    • -16
    • 2

    Cold

    • 12
    • 17

    Partly Sunny

    • 19
    • 31

    Mostly Cloudy

    • 24
    • 40

    Partly Sunny

    • 10
    • 38

    Chance Rain

    • 4
    • 22

    Partly Sunny

Today 13 Dec Codington

Partly sunny. Colder with Highs around 2 above. Temperature falling to around 1 below this afternoon. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Wind chill Values as low as 24 below.

Tonight 13 Dec Codington

Mostly clear in the Evening, then becoming partly cloudy. Colder with Lows around 17 below. Northwest Winds 5 to 10 Mph. Wind chill Values as low as 28 below.

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Grass Lake Temperature Statistics

December Temperature

Watertown, Watertown Municipal Airport (16.2 miles)

  • Lowest 4 December, 2025

    -13 °F

  • Average December

    14.5 °F

  • Highest 9 December, 2025

    37.9 °F

Climate (2020–Present)

Watertown, Watertown Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    35.2 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    55.7 °F
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