Lannon Lake Weather Forecast

    • 44
    • 49

    Patchy Fog

    • 36
    • 56

    Rain

    • 35
    • 54

    Partly Sunny

    • 36
    • 55

    Mostly Cloudy

    • 45
    • 57

    Slight Chance Rain

    • 46
    • 61

    Mostly Cloudy

    • 41
    • 58

    Chance Rain

Today 27 Oct Big Stone

Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s. Highs in the mid 50s.

Tonight 27 Oct Big Stone

Cloudy. Patchy fog this Evening, then Areas of fog after midnight. Near steady temperature in the mid 40s. South 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

    53.9 °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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