Lannon Lake Weather Forecast

    • 20
    • 46

    Mostly Sunny

    • 20
    • 29

    Mostly Cloudy

    • 25
    • 39

    Mostly Cloudy

    • 4
    • 36

    Mostly Cloudy

    • 1
    • 11

    Mostly Cloudy

    • 3
    • 12

    Slight Chance Snow

Today 30 Jan Big Stone

Sunny. Highs in the upper 40s. Northwest Winds 5 to 10 Mph.

Tonight 30 Jan Big Stone

Clear in the evening then becoming partly cloudy. Lows in the lower 20s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

January Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 20 January, 2025

    -22 °F

  • Average January

    10.4 °F

  • Highest 28 January, 2025

    44.6 °F

Climate (2020–Present)

Wheaton Municipal Airport (16.8 miles)

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  • Average Low 2020–2025

    34.8 °F

  • Average 2020–2025

    44.7 °F

  • Average High 2020–2025

    54.5 °F
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