Hartington Weather Forecast

    • 71
    • 95

    Chance Thunderstorms

    • 71
    • 93

    Chance Thunderstorms

    • 70
    • 90

    Chance Thunderstorms

    • 74
    • 91

    Chance Thunderstorms

    • 64
    • 89

    Partly Sunny

    • 62
    • 85

    Slight Chance Rain Showers

    • 63
    • 83

    Partly Sunny

Today 4 Sep Cedar

Sunny, hot. Near steady temperature in the upper 80s. East Winds 5 to 10 Mph. Heat index Values up to 114.

Tonight 4 Sep Cedar

Mostly clear. A slight chance of Showers and Thunderstorms. Lows in the lower 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hartington Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (21.1 miles)

  • Lowest 2 September, 2026

    66.9 °F

  • Average September

    77.6 °F

  • Highest 2 September, 2026

    91.9 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (21.1 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
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