Steffan Reservoir Weather Forecast

    • -5
    • -3

    Cold

    • -3
    • 11

    Mostly Cloudy

    • -6
    • 11

    Partly Sunny

    • 8
    • 31

    Mostly Sunny

    • 5
    • 25

    Mostly Cloudy

    • 1
    • 21

    Mostly Cloudy

Today 23 Jan Knox

Mostly cloudy. Much Colder with Highs around 2 below. North Winds 10 to 15 Mph. Wind chill Values as low as 34 below.

Tonight 23 Jan Knox

Cloudy with a 20 percent chance of snow. Cold. Near steady temperature around 3 below. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Steffan Reservoir Temperature Statistics

January Temperature

Yankton, Chan Gurney Municipal Airport (11.2 miles)

  • Lowest 19 January, 2026

    -2.9 °F

  • Average January

    28.1 °F

  • Highest 7 January, 2026

    59 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    39.2 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    61.4 °F
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