Lannon Lake Weather Forecast

    • 45
    • 56

    Rain Showers

    • 32
    • 49

    Rain Showers

    • 35
    • 51

    Partly Sunny

    • 36
    • 56

    Partly Sunny

    • 34
    • 54

    Partly Sunny

    • 39
    • 62

    Mostly Sunny

Today 26 Apr Big Stone

Mostly cloudy. A chance of Showers this afternoon. Highs in the mid 50s. East Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 26 Apr Big Stone

Patchy fog in the evening. Showers. A slight chance of Thunderstorms after midnight. Lows in the mid 40s. East Winds around 15 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

April Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 7 April, 2026

    15.8 °F

  • Average April

    38.7 °F

  • Highest 16 April, 2026

    84.2 °F

Climate (2021–Present)

Wheaton Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    34.7 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    54.5 °F
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