Lannon Lake Weather Forecast

    • 56
    • 76

    Breezy

    • 37
    • 63

    Chance Rain Showers

    • 36
    • 51

    Chance Rain

    • 34
    • 47

    Chance Rain

    • 39
    • 52

    Chance Rain

    • 35
    • 58

    Partly Sunny

    • 33
    • 53

    Partly Sunny

Today 23 Oct Big Stone

Partly sunny. A slight chance of rain in the afternoon. Highs in the lower 50s. Chance of rain 20 percent.

Tonight 23 Oct Big Stone

Mostly cloudy this Evening, then clearing. Breezy with Lows in the mid 50s. South Winds 15 to 25 Mph with Gusts up to 35 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

    54.2 °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

    54.4 °F
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