Lannon Lake Weather Forecast

    • 64
    • 83

    Chance Thunderstorms

    • 61
    • 84

    Becoming Sunny

    • 55
    • 79

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 63
    • 81

    Chance Thunderstorms

    • 64
    • 82

    Chance Rain Showers

    • 62
    • 83

    Chance Rain Showers

Today 24 Aug Big Stone

Partly sunny. Near steady temperature in the lower 80s. South Winds 10 to 15 Mph.

Tonight 24 Aug Big Stone

Mostly cloudy. A slight chance of Thunderstorms this Evening, then a chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

August Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 8 August, 2026

    50 °F

  • Average August

    69.4 °F

  • Highest 20 August, 2026

    86 °F

Climate (2021–2026)

Wheaton Municipal Airport (16.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    34.7 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    54.4 °F
Get WillyWeather+ to remove ads