Lake Vermillion Recreation Area Weather Forecast

    • 59
    • 62

    Rain Showers

    • 59
    • 66

    Rain Showers

    • 58
    • 71

    Mostly Cloudy

    • 59
    • 70

    Rain Showers Likely

    • 53
    • 66

    Chance Rain Showers

    • 53
    • 65

    Slight Chance Rain Showers

Today 25 Sep McCook

Patchy fog early. Cloudy with Areas of drizzle. A chance of Showers. Near steady temperature in the lower 60s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 25 Sep McCook

Showers. Near steady temperature in the upper 50s. Southeast Winds around 15 Mph with Gusts up to 25 Mph. Chance of rain 80 percent.

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Lake Vermillion Recreation Area Temperature Statistics

September Temperature

Sioux Falls, Foss Field (21.1 miles)

  • Lowest 16 September, 2026

    46.7 °F
  • Average September

    69 °F
  • Highest 4 September, 2026

    99.6 °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

    50 °F
  • Average High 2021–2026

    61 °F
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