Summit Lake Weather Forecast

    • 50
    • 71

    Slight Chance Thunderstorms

    • 54
    • 72

    Partly Sunny

    • 52
    • 67

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

    • 53
    • 70

    Chance Thunderstorms

    • 54
    • 71

    Slight Chance Thunderstorms

Today 19 Jun Grant

Partly sunny. A slight chance of Thunderstorms this morning. Highs in the mid 70s. Southwest Winds 10 to 15 Mph, becoming west 15 to 20 Mph this afternoon. Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 19 Jun Grant

Mostly clear. Lows around 50. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Lake Temperature Statistics

June Temperature

Sisseton, Sisseton Municipal Airport (26.1 miles)

  • Lowest 14 June, 2026

    46 °F

  • Average June

    69.8 °F

  • Highest 9 June, 2026

    93 °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

    57.1 °F
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