Lannon Lake Weather Forecast

    • 36
    • 47

    Rain

    • 39
    • 51

    Areas Fog

    • 35
    • 61

    Rain

    • 36
    • 57

    Partly Sunny

    • 42
    • 58

    Chance Rain

    • 46
    • 60

    Chance Rain

    • 44
    • 62

    Mostly Cloudy

Today 26 Oct Big Stone

Mostly cloudy in the Morning, then becoming partly sunny. A 50 percent chance of rain. Highs in the upper 50s.

Tonight 26 Oct Big Stone

Rain. Near steady temperature in the upper 30s. East Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Real-Time

Lannon Lake Temperature Statistics

October Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 19 October, 2026

    30.2 °F

  • Average October

    54.5 °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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