Hartington Weather Forecast

    • 61
    • 70

    Chance Rain Showers

    • 61
    • 72

    Mostly Cloudy

    • 61
    • 70

    Rain Showers

    • 58
    • 68

    Chance Rain Showers

    • 56
    • 68

    Chance Rain Showers

    • 53
    • 65

    Slight Chance Rain Showers

Today 26 Sep Cedar

Mostly cloudy. Showers likely with a slight chance of Thunderstorms this morning. Patchy fog this morning. Highs around 70. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 26 Sep Cedar

A slight chance of Thunderstorms in the evening. Mostly cloudy with a slight chance of Showers. Patchy fog after midnight. Humid with Lows in the lower 60s. Southeast Winds 5 to 10 Mph, becoming east after midnight. Chance of rain 20 percent.

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Hartington Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (21.1 miles)

  • Lowest 13 September, 2026

    48.9 °F

  • Average September

    68.7 °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

    50.5 °F

  • Average High 2021–2026

    61.8 °F
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