Lake Yankton Weather Forecast

    • 2
    • 31

    Chance Snow

    • 21
    • 30

    Mostly Cloudy

    • 8
    • 30

    Mostly Sunny

    • 23
    • 31

    Mostly Cloudy

    • 25
    • 41

    Mostly Cloudy

    • 21
    • 33

    Mostly Cloudy

Today 18 Dec Lyon

Snow likely. Snow accumulation around an inch. Very windy and cooler with Highs in the lower 30s. Temperature falling to around 10 above this afternoon. Northwest Winds 30 to 40 Mph. Gusts up to 60 Mph this afternoon. Chance of snow 70 percent. Wind chill Values as low as 16 below this afternoon.

Tonight 18 Dec Lyon

Partly cloudy in the Evening, then clearing. Windy and much Colder with Lows around 1 above. Northwest Winds 25 to 35 Mph with Gusts up to 55 Mph, Diminishing to 10 to 15 Mph with Gusts up to 25 Mph after midnight. Wind chill Values as low as 16 below.

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  • Temperature Real-Time

Lake Yankton Temperature Statistics

December Temperature

Tracy, Tracy Municipal Airport (12.4 miles)

  • Lowest 3 December, 2025

    -7.6 °F

  • Average December

    16.7 °F

  • Highest 16 December, 2025

    50 °F

Climate (2020–Present)

Tracy, Tracy Municipal Airport (12.4 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    57.1 °F
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