Margos Lake Weather Forecast
- 52
- 70
Decreasing Clouds
- 54
- 74
Mostly Sunny
- 53
- 78
Mostly Sunny
- 52
- 72
Chance Rain
- 50
- 69
Partly Sunny
- 50
- 68
Partly Sunny
Today 23 Aug San Juan County
Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms in the Morning, then mostly sunny in the afternoon. Highs in the mid 60s to lower 70s. South wind 10 to 15 Mph.
Tonight 23 Aug San Juan County
Mostly clear. Lows in the 50s. South wind around 10 Mph in the evening becoming light.
Margos Lake Temperature Statistics
August Temperature
Friday Harbor Airport (3.1 miles)
Lowest 3 August, 2026
48.9 °FAverage August
60.1 °FHighest 4 August, 2026
78.1 °F
Climate (2021–2026)
Friday Harbor Airport (3.1 miles)
Average Low 2021–2026
44.5 °FAverage 2021–2026
51.9 °FAverage High 2021–2026
59.6 °F