School Grove Lake Weather Forecast

    • 64
    • 82

    Becoming Sunny

    • 55
    • 78

    Chance Rain Showers

    • 60
    • 81

    Slight Chance Thunderstorms

    • 62
    • 80

    Chance Thunderstorms

    • 59
    • 78

    Partly Sunny

    • 60
    • 78

    Partly Sunny

Today 6 Aug Lyon

Mostly sunny. Highs in the lower 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 6 Aug Lyon

Mostly clear. Near steady temperature in the lower 60s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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School Grove Lake Temperature Statistics

August Temperature

Marshall, Southwest Minnesota Regional Airport - Marshall/Ryan Field (11.8 miles)

  • Lowest 1 August, 2026

    61 °F

  • Average August

    73.9 °F

  • Highest 3 August, 2026

    86 °F

Climate (2021–2026)

Marshall, Southwest Minnesota Regional Airport - Marshall/Ryan Field (11.8 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.1 °F

  • Average High 2021–2026

    56.9 °F
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