Lake Vermillion Recreation Area Weather Forecast

    • 65
    • 84

    Partly Sunny

    • 58
    • 84

    Chance Rain Showers

    • 64
    • 86

    Slight Chance Thunderstorms

    • 66
    • 86

    Chance Thunderstorms

    • 62
    • 82

    Slight Chance Thunderstorms

    • 62
    • 79

    Chance Rain Showers

Today 6 Aug McCook

Patchy fog early this morning. Mostly sunny. Highs in the mid 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 6 Aug McCook

Partly cloudy. A chance of Sprinkles with a slight chance of Thunderstorms after midnight. Warmer with Lows in the mid 60s. South Winds 15 to 20 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Vermillion Recreation Area Temperature Statistics

August Temperature

Sioux Falls, Foss Field (21.1 miles)

  • Lowest 4 August, 2026

    57.9 °F

  • Average August

    72.6 °F

  • Highest 3 August, 2026

    89.1 °F

Climate (2021–2026)

Sioux Falls, Foss Field (21.1 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    61 °F
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