Summit Lake Weather Forecast

    • 24
    • 38

    Slight Chance Freezing Rain

    • 23
    • 35

    Partly Sunny

    • 20
    • 26

    Mostly Cloudy

    • 29
    • 37

    Mostly Cloudy

    • 18
    • 39

    Slight Chance Snow

    • 17
    • 27

    Slight Chance Snow

    • 10
    • 26

    Mostly Cloudy

Today 21 Dec Grant

Partly sunny and not as cold. Near steady temperature in the mid 30s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 21 Dec Grant

Mostly cloudy with a 20 percent chance of freezing rain. Not as cold with Lows in the lower 20s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Lake Temperature Statistics

December Temperature

Sisseton, Sisseton Municipal Airport (26.1 miles)

  • Lowest 7 December, 2025

    -13 °F

  • Average December

    15.2 °F

  • Highest 16 December, 2025

    51.1 °F

Climate (2020–Present)

Sisseton, Sisseton Municipal Airport (26.1 miles)

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  • Average Low 2020–2025

    36.2 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    57.2 °F
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