Summit Lake Weather Forecast

    • 35
    • 45

    Rain Showers Likely

    • 44
    • 53

    Rain Showers

    • 33
    • 49

    Rain Showers

    • 32
    • 49

    Partly Sunny

    • 34
    • 54

    Partly Sunny

    • 31
    • 49

    Partly Sunny

Today 25 Apr Grant

Showers likely. Highs in the upper 40s. West Winds 5 to 10 Mph, becoming north this afternoon. Chance of rain 70 percent.

Tonight 25 Apr Grant

Mostly cloudy. A chance of rain Showers, mainly in the evening. Lows in the upper 30s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Lake Temperature Statistics

April Temperature

Sisseton, Sisseton Municipal Airport (26.1 miles)

  • Lowest 7 April, 2026

    15.1 °F

  • Average April

    39.1 °F

  • Highest 16 April, 2026

    84.9 °F

Climate (2021–Present)

Sisseton, Sisseton Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    46.6 °F

  • Average High 2021–2026

    57.1 °F
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