Lannon Lake Weather Forecast

    • 10
    • 24

    Mostly Cloudy

    • 20
    • 31

    Slight Chance Freezing Rain

    • 21
    • 32

    Mostly Cloudy

    • 20
    • 31

    Mostly Cloudy

    • 22
    • 36

    Partly Sunny

    • 16
    • 33

    Mostly Cloudy

Today 3 Jan Big Stone

Partly sunny. Near steady temperature in the lower 20s. North Winds around 5 Mph.

Tonight 3 Jan Big Stone

Mostly cloudy. Lows around 11. East Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

January Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 1 January, 2026

    -2.2 °F

  • Average January

    6.2 °F

  • Highest 1 January, 2026

    12.2 °F

Climate (2021–Present)

Wheaton Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    35 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    54.6 °F
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