Lannon Lake Weather Forecast

    • 34
    • 50

    Mostly Cloudy

    • 40
    • 53

    Increasing Clouds

    • 48
    • 57

    Chance Rain

    • 50
    • 64

    Mostly Cloudy

    • 48
    • 59

    Rain

    • 41
    • 57

    Rain Likely

    • 35
    • 50

    Slight Chance Rain

Today 29 Oct Big Stone

Mostly cloudy. A 20 percent chance of rain. Lows in the mid 30s. Highs in the mid 40s.

Tonight 29 Oct Big Stone

Mostly cloudy. Lows in the mid 30s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

October Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 19 October, 2026

    30.2 °F

  • Average October

    53 °F

  • Highest 10 October, 2026

    93.2 °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

    54.5 °F
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