Hartington Weather Forecast

    • 22
    • 42

    Increasing Clouds

    • 34
    • 47

    Increasing Clouds

    • 30
    • 59

    Partly Sunny

    • 34
    • 47

    Mostly Cloudy

    • 39
    • 55

    Partly Sunny

    • 31
    • 62

    Partly Sunny

    • 28
    • 50

    Mostly Cloudy

Today 20 Dec Cedar

Sunny. Highs in the lower 40s. Temperature falling into the upper 30s late. Northwest Winds 5 to 10 Mph.

Tonight 20 Dec Cedar

Mostly clear. Cooler with Lows in the lower 20s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Hartington Temperature Statistics

December Temperature

Yankton, Chan Gurney Municipal Airport (21.1 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 (21.1 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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