Lannon Lake Weather Forecast
- 28
- 37
Mostly Cloudy
- 27
- 41
Mostly Cloudy
- 21
- 38
Partly Sunny
- 22
- 37
Mostly Cloudy
- 23
- 37
Slight Chance Snow
- 25
- 40
Partly Sunny
Today 8 Feb Big Stone
Partly sunny. Highs in the upper 30s. Southeast Winds around 5 Mph.
Tonight 8 Feb Big Stone
Partly cloudy and not as cold. Near steady temperature in the lower 20s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph.
Lannon Lake Temperature Statistics
February Temperature
Wheaton Municipal Airport (16.8 miles)
Lowest 3 February, 2026
-9.4 °FAverage February
19 °FHighest 5 February, 2026
44.6 °F
Climate (2021–Present)
Wheaton Municipal Airport (16.8 miles)
Average Low 2021–2026
34.8 °FAverage 2021–2026
44.7 °FAverage High 2021–2026
54.5 °F