Lannon Lake Weather Forecast

    • 53
    • 74

    Increasing Clouds

    • 53
    • 74

    Mostly Cloudy

    • 56
    • 76

    Rain Showers

    • 53
    • 72

    Rain Showers

    • 52
    • 71

    Slight Chance Thunderstorms

    • 54
    • 75

    Partly Sunny

Today 20 Jun Big Stone

Mostly sunny. Near steady temperature in the lower 70s. North Winds 5 to 10 Mph.

Tonight 20 Jun Big Stone

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 50s. Northeast Winds 5 to 10 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

    68.9 °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

    44.6 °F

  • Average High 2021–2026

    54.4 °F
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