Spring Valley Weather Forecast

    • 67
    • 90

    Partly Sunny

    • 62
    • 83

    Chance Thunderstorms

    • 64
    • 83

    Mostly Sunny

    • 61
    • 82

    Chance Thunderstorms

    • 58
    • 74

    Chance Thunderstorms

    • 56
    • 72

    Slight Chance Thunderstorms

    • 54
    • 73

    Partly Sunny

Today 13 Sep Turner

Mostly sunny. Highs around 90. South Winds 10 to 15 Mph.

Tonight 13 Sep Turner

Mostly cloudy. Lows in the upper 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Spring Valley Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (20.5 miles)

  • Lowest 7 September, 2025

    41 °F

  • Average September

    63.5 °F

  • Highest 11 September, 2025

    84 °F

Climate (2020–Present)

Yankton, Chan Gurney Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    39 °F

  • Average 2020–2025

    50 °F

  • Average High 2020–2025

    61.2 °F
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