Island Lake Weather Forecast

    • 66
    • 88

    Rain Showers

    • 56
    • 75

    Chance Thunderstorms

    • 58
    • 71

    Mostly Cloudy

    • 62
    • 78

    Chance Rain Showers

    • 63
    • 80

    Slight Chance Thunderstorms

    • 65
    • 83

    Slight Chance Thunderstorms

    • 62
    • 82

    Chance Thunderstorms

Today 4 Jul Marshall

Partly sunny with a 50 percent chance of Thunderstorms. Some Thunderstorms may be severe with damaging Winds and large hail. Hot. Near steady temperature in the upper 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 4 Jul Marshall

Partly sunny early. A chance of Thunderstorms Early, then Showers with Thunderstorms likely this evening. A chance of Thunderstorms after midnight. Some Thunderstorms may be severe with damaging Winds and large hail early. Humid with Lows in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming west after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Temperature Statistics

July Temperature

Sisseton, Sisseton Municipal Airport (14.3 miles)

  • Lowest 1 July, 2025

    61 °F

  • Average July

    75.6 °F

  • Highest 1 July, 2025

    86 °F

Climate (2020–Present)

Sisseton, Sisseton Municipal Airport (14.3 miles)

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  • Average Low 2020–2025

    36 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    57.1 °F
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