Summit Lake Weather Forecast

    • 33
    • 39

    Rain/Sleet

    • 41
    • 49

    Mostly Cloudy

    • 39
    • 57

    Rain Likely

    • 40
    • 54

    Partly Sunny

    • 44
    • 54

    Chance Rain

    • 48
    • 58

    Chance Rain

    • 45
    • 59

    Mostly Cloudy

Today 26 Oct Grant

Mostly cloudy with a 50 percent chance of rain. Highs in the upper 50s.

Tonight 26 Oct Grant

Rain. Lows in the mid 30s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Lake Temperature Statistics

October Temperature

Sisseton, Sisseton Municipal Airport (26.1 miles)

  • Lowest 19 October, 2026

    32 °F

  • Average October

    54.4 °F

  • Highest 10 October, 2026

    90 °F

Climate (2021–2026)

Sisseton, Sisseton Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    57 °F
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