Lake Oahe Weather Forecast

    • 11
    • 19

    Slight Chance Snow

    • 18
    • 38

    Mostly Cloudy

    • 13
    • 29

    Mostly Sunny

    • 23
    • 35

    Mostly Cloudy

    • 20
    • 43

    Mostly Cloudy

    • 21
    • 33

    Mostly Cloudy

Today 18 Dec Dewey

Partly sunny. A slight chance of snow in the morning. Strong Winds and much Colder with Highs around 20. Northwest Winds 40 to 50 Mph with Gusts up to 75 Mph, Diminishing to 30 to 40 Mph with Gusts up to 55 Mph in the afternoon. Chance of snow 20 percent.

Tonight 18 Dec Dewey

Mostly cloudy with a 20 percent chance of snow. Strong Winds and much Colder with Lows around 9 above. West Winds 40 to 50 Mph with Gusts up to 75 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Oahe Temperature Statistics

December Temperature

Mobridge, Mobridge Municipal Airport (20.5 miles)

  • Lowest 13 December, 2025

    -9 °F

  • Average December

    17.9 °F

  • Highest 9 December, 2025

    42.1 °F

Climate (2020–Present)

Mobridge, Mobridge Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    59.9 °F
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