Steffan Reservoir Weather Forecast

    • 23
    • 41

    Decreasing Clouds

    • 30
    • 49

    Partly Sunny

    • 36
    • 55

    Partly Sunny

    • 34
    • 64

    Partly Sunny

    • 25
    • 46

    Slight Chance Snow

    • 26
    • 44

    Chance Rain/Snow

Today 6 Feb Knox

Partly cloudy Early, then mostly cloudy with a chance of Sprinkles and Flurries this morning. Mostly cloudy this afternoon. Breezy and much cooler with Highs in the lower 40s. Northwest Winds 15 to 25 Mph with Gusts up to 35 Mph, becoming north 10 to 15 Mph with Gusts up to 25 Mph this afternoon.

Tonight 6 Feb Knox

Partly cloudy. Cooler with Lows in the mid 20s. Northeast Winds around 5 Mph, becoming southeast 10 to 15 Mph after midnight.

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Steffan Reservoir Temperature Statistics

February Temperature

Yankton, Chan Gurney Municipal Airport (11.2 miles)

  • Lowest 1 February, 2026

    16 °F

  • Average February

    30.1 °F

  • Highest 2 February, 2026

    42.1 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    61.4 °F
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