Steffan Reservoir Weather Forecast

    • 35
    • 43

    Cloudy

    • 38
    • 57

    Partly Sunny

    • 29
    • 50

    Partly Sunny

    • 34
    • 48

    Partly Sunny

    • 33
    • 54

    Mostly Sunny

    • 34
    • 55

    Mostly Sunny

Today 18 Nov Knox

Cloudy. Highs in the mid 40s. North Winds 5 to 10 Mph.

Tonight 18 Nov Knox

Mostly cloudy. Lows in the mid 30s. East Winds around 5 Mph, becoming south after midnight.

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Steffan Reservoir Temperature Statistics

November Temperature

Yankton, Chan Gurney Municipal Airport (11.2 miles)

  • Lowest 10 November, 2025

    12 °F

  • Average November

    44.9 °F

  • Highest 14 November, 2025

    82 °F

Climate (2020–Present)

Yankton, Chan Gurney Municipal Airport (11.2 miles)

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  • Average Low 2020–2025

    39.3 °F

  • Average 2020–2025

    50.3 °F

  • Average High 2020–2025

    61.5 °F
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