Lannon Lake Weather Forecast
- 48
- 68
Increasing Clouds
- 50
- 72
Mostly Sunny
- 50
- 77
Chance Thunderstorms
- 54
- 74
Chance Rain Showers
- 50
- 74
Rain Showers Likely
- 52
- 73
Partly Sunny
Today 13 Jun Big Stone
Partly sunny. Not as warm with Highs in the upper 60s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.
Tonight 13 Jun Big Stone
Partly cloudy. Lows in the mid 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.
Lannon Lake Temperature Statistics
June Temperature
Wheaton Municipal Airport (16.8 miles)
Lowest 6 June, 2026
57.2 °FAverage June
73.4 °FHighest 7 June, 2026
89.6 °F
Climate (2021–Present)
Wheaton Municipal Airport (16.8 miles)
Average Low 2021–2026
34.7 °FAverage 2021–2026
44.6 °FAverage High 2021–2026
54.5 °F