Summit Lake Weather Forecast

    • 68
    • 90

    Rain Showers

    • 57
    • 77

    Chance Thunderstorms

    • 59
    • 74

    Partly Sunny

    • 63
    • 78

    Chance Thunderstorms

    • 63
    • 80

    Chance Thunderstorms

    • 64
    • 83

    Partly Sunny

Today 4 Jul Marshall

Mostly cloudy Early, then becoming partly sunny. A chance of Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Breezy, hot with Highs around 90. South Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of precipitation 50 percent.

Tonight 4 Jul Marshall

Showers. Thunderstorms Likely, mainly in the evening. Some Thunderstorms may produce heavy rainfall in the evening. Humid with Lows in the mid 60s. Southwest Winds 15 to 20 Mph. Chance of rain 90 percent.

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Summit Lake Temperature Statistics

July Temperature

Sisseton, Sisseton Municipal Airport (14.9 miles)

  • Lowest 1 July, 2025

    61 °F

  • Average July

    74.6 °F

  • Highest 1 July, 2025

    86 °F

Climate (2020–Present)

Sisseton, Sisseton Municipal Airport (14.9 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    57.1 °F
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