Steffan Reservoir Weather Forecast

    • 43
    • 63

    Increasing Clouds

    • 39
    • 71

    Slight Chance Rain

    • 24
    • 55

    Mostly Sunny

    • 14
    • 33

    Chance Snow

    • 14
    • 31

    Partly Sunny

    • 12
    • 35

    Slight Chance Snow

Today 16 Feb Knox

Partly cloudy. Highs in the upper 60s. Southwest Winds around 5 Mph, becoming southeast.

Tonight 16 Feb Knox

Mostly cloudy. Lows in the mid 40s. Southeast Winds 10 to 15 Mph.

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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

    37.1 °F

  • Highest 13 February, 2026

    66 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.4 °F

  • Average High 2021–2026

    61.7 °F
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