Lannon Lake Weather Forecast

    • 48
    • 80

    Mostly Sunny

    • 43
    • 71

    Partly Sunny

    • 43
    • 67

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 54
    • 80

    Partly Sunny

    • 44
    • 67

    Chance Rain Showers

Today 6 Oct Big Stone

Mostly sunny. Highs in the lower 80s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 6 Oct Big Stone

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 40s. Northwest Winds 5 to 10 Mph.

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Lannon Lake Temperature Statistics

October Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 2 October, 2026

    33.8 °F

  • Average October

    54 °F

  • Highest 4 October, 2026

    68 °F

Climate (2021–2026)

Wheaton Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    54.4 °F
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