Lannon Lake Weather Forecast

    • 59
    • 79

    Partly Cloudy

    • 63
    • 81

    Chance Rain Showers

    • 61
    • 84

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 59
    • 80

    Chance Rain Showers

Today 23 Aug Big Stone

Mostly sunny. Highs in the upper 70s. Southeast Winds 5 to 10 Mph.

Tonight 23 Aug Big Stone

Partly cloudy. Not as cool with Lows in the upper 50s. Southeast Winds 5 to 10 Mph.

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

    69.6 °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

    54.5 °F
Get WillyWeather+ to remove ads