Lannon Lake Weather Forecast

    • 44
    • 67

    Partly Sunny

    • 64
    • 76

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

    • 43
    • 72

    Mostly Cloudy

    • 38
    • 55

    Chance Rain Showers

    • 40
    • 56

    Partly Sunny

Today 8 Oct Big Stone

Partly sunny. Highs in the upper 60s. Light and variable Winds, becoming south around 5 Mph this afternoon.

Tonight 8 Oct Big Stone

Partly cloudy. Lows in the mid 40s. Southeast 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

    56.6 °F

  • Highest 6 October, 2026

    82.4 °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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