Lost Lake Weather Forecast
- 52
- 62
Mostly Sunny
- 51
- 68
Mostly Sunny
- 44
- 62
Rain Showers Likely
- 41
- 47
Rain Showers Likely
- 48
- 58
Mostly Sunny
- 51
- 63
Mostly Sunny
- 48
- 61
Partly Sunny
Today 18 Sep Western Chelan County
Partly cloudy in the morning then clearing. Highs in the mid 70s to mid 80s.
Tonight 18 Sep Western Chelan County
Clear, haze. Areas of smoke overnight. Lows in the lower 50s to lower 60s.
Lost Lake Temperature Statistics
September Temperature
Stampede Pass (41.6 miles)
Lowest 15 September, 2025
39.9 °FAverage September
59 °FHighest 2 September, 2025
87.1 °F
Climate (2020–Present)
Stampede Pass (41.6 miles)
Average Low 2020–2025
36.3 °FAverage 2020–2025
41.5 °FAverage High 2020–2025
48.3 °F