Steffan Reservoir Weather Forecast

    • 34
    • 68

    Increasing Clouds

    • 29
    • 52

    Chance Rain/Snow

    • 29
    • 47

    Partly Sunny

    • 33
    • 66

    Breezy

    • 32
    • 50

    Slight Chance Rain/Snow

    • 26
    • 55

    Chance Rain/Snow

Today 9 Mar Knox

Sunny. Highs around 70. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming east this afternoon.

Tonight 9 Mar Knox

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 30s. East Winds 5 to 10 Mph, becoming northeast 10 to 15 Mph with Gusts up to 30 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Steffan Reservoir Temperature Statistics

March Temperature

Yankton, Chan Gurney Municipal Airport (11.2 miles)

  • Lowest 1 March, 2026

    10.9 °F

  • Average March

    37.5 °F

  • Highest 5 March, 2026

    64 °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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