Lannon Lake Weather Forecast

    • 56
    • 76

    Increasing Clouds

    • 64
    • 79

    Mostly Cloudy

    • 70
    • 84

    Breezy

    • 69
    • 95

    Chance Thunderstorms

    • 65
    • 95

    Chance Thunderstorms

    • 65
    • 89

    Chance Thunderstorms

Today 25 Jun Big Stone

Partly sunny. Highs in the mid 70s. Northwest Winds around 5 Mph, becoming northeast this afternoon.

Tonight 25 Jun Big Stone

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 50s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lannon Lake Temperature Statistics

June Temperature

Wheaton Municipal Airport (16.8 miles)

  • Lowest 14 June, 2026

    48.2 °F

  • Average June

    67.9 °F

  • Highest 7 June, 2026

    89.6 °F

Climate (2021–2026)

Wheaton Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    34.7 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    54.4 °F
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