Lannon Lake Weather Forecast

    • 25
    • 37

    Becoming Sunny

    • 34
    • 62

    Breezy

    • 35
    • 61

    Partly Sunny

    • 43
    • 67

    Mostly Cloudy

    • 32
    • 58

    Mostly Cloudy

    • 28
    • 46

    Slight Chance Rain/Snow

Today 27 Mar Big Stone

Partly sunny. A chance of Flurries this morning. Highs in the upper 30s. Northwest Winds 15 to 20 Mph.

Tonight 27 Mar Big Stone

Mostly clear. Lows in the mid 20s. North Winds 10 to 15 Mph, becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

March Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 16 March, 2026

    -0.4 °F

  • Average March

    32.7 °F

  • Highest 21 March, 2026

    69.8 °F

Climate (2021–Present)

Wheaton Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    44.7 °F

  • Average High 2021–2026

    54.6 °F
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