Hartington Weather Forecast

    • 75
    • 100

    Hot

    • 75
    • 101

    Hot

    • 72
    • 98

    Hot

    • 69
    • 94

    Partly Sunny

    • 70
    • 94

    Chance Thunderstorms

    • 68
    • 93

    Chance Thunderstorms

Today 25 Jul Cedar

Sunny. Much warmer. Humid with Highs around 100. Southwest Winds 10 to 15 Mph. Heat index Values up to 110 in the afternoon.

Tonight 25 Jul Cedar

Mostly clear. Near steady temperature in the upper 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Hartington Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (21.1 miles)

  • Lowest 22 July, 2026

    59 °F

  • Average July

    78.4 °F

  • Highest 17 July, 2026

    97 °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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