Swan Lake Weather Forecast

    • 28
    • 32

    Increasing Clouds

    • 14
    • 37

    Mostly Sunny

    • 30
    • 38

    Mostly Cloudy

    • 29
    • 48

    Partly Sunny

    • 30
    • 41

    Mostly Cloudy

    • 35
    • 48

    Mostly Cloudy

    • 32
    • 52

    Mostly Cloudy

Today 19 Dec Turner

Mostly sunny. Highs around 30. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 19 Dec Turner

Partly cloudy this Evening, then mostly cloudy with a chance of Flurries after midnight. Not as cool with Lows in the upper 20s. Temperature rising into the lower 30s after midnight. South Winds 10 to 15 Mph, becoming northwest after midnight. Gusts up to 30 Mph.

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Swan Lake Temperature Statistics

December Temperature

Yankton, Chan Gurney Municipal Airport (24.9 miles)

  • Lowest 14 December, 2025

    -13 °F

  • Average December

    23.6 °F

  • Highest 16 December, 2025

    54 °F

Climate (2020–Present)

Yankton, Chan Gurney Municipal Airport (24.9 miles)

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  • Average Low 2020–2025

    39.2 °F

  • Average 2020–2025

    50.2 °F

  • Average High 2020–2025

    61.4 °F
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