Lake Shannon Weather Forecast
- 40
- 43
Rain
- 42
- 44
Rain
- 43
- 47
Rain
- 42
- 45
Rain
- 43
- 47
Rain
- 44
- 48
Rain
Today 3 Dec Foothills and Valleys of the North Cascades
Mostly cloudy. Patchy fog late in the morning. A slight chance of rain late in the morning. A chance of rain early in the Afternoon, then a slight chance of rain late in the afternoon. Highs in the lower to mid 40s. Light wind.
Tonight 3 Dec Foothills and Valleys of the North Cascades
Mostly cloudy. Patchy fog in the evening. A slight chance of rain in the evening. A chance of rain after Midnight, then rain likely in the morning. Rainfall Amounts less than a tenth of an inch likely. Lows near 40. Light wind.
Lake Shannon Temperature Statistics
December Temperature
Burlington/Mount Vernon, Skagit Regional Airport (32.9 miles)
Lowest 1 December, 2025
33.8 °FAverage December
39.1 °FHighest 1 December, 2025
44.6 °F
Climate (2020–Present)
Burlington/Mount Vernon, Skagit Regional Airport (32.9 miles)
Average Low 2020–2025
43.7 °FAverage 2020–2025
51.3 °FAverage High 2020–2025
59.7 °F