Lannon Lake Weather Forecast

    • 51
    • 75

    Mostly Cloudy

    • 44
    • 70

    Chance Rain Showers

    • 40
    • 57

    Partly Sunny

    • 41
    • 61

    Chance Rain Showers

    • 38
    • 59

    Chance Rain Showers

    • 32
    • 52

    Partly Sunny

Today 11 Oct Big Stone

Partly sunny and not as warm. Near steady temperature in the mid 60s. North Winds 10 to 15 Mph.

Tonight 11 Oct Big Stone

Mostly cloudy. Lows in the lower 50s. North Winds around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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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