Hartington Weather Forecast

    • 54
    • 73

    Partly Sunny

    • 57
    • 68

    Rain Showers

    • 56
    • 78

    Slight Chance Thunderstorms

    • 54
    • 70

    Mostly Cloudy

    • 55
    • 69

    Slight Chance Rain Showers

    • 56
    • 72

    Partly Sunny

Today 12 Sep Cedar

Mostly sunny. A slight chance of Showers this morning. Not as warm with Highs in the lower 70s. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 12 Sep Cedar

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 50s. North Winds around 5 Mph, becoming east after midnight.

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Hartington Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (21.1 miles)

  • Lowest 9 September, 2026

    57 °F

  • Average September

    76.8 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (21.1 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    61.8 °F
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