Lost Lake Weather Forecast

    • 45
    • 65

    Increasing Clouds

    • 40
    • 52

    Partly Sunny

    • 40
    • 51

    Partly Sunny

    • 38
    • 51

    Rain Showers Likely

    • 35
    • 41

    Chance Rain Showers

    • 36
    • 44

    Mostly Cloudy

Today 21 Sep Western Chelan County

Partly cloudy. Highs in the mid 70s to mid 80s.

Tonight 21 Sep Western Chelan County

Mostly cloudy. Lows in the mid to upper 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

September Temperature

Stampede Pass (41.6 miles)

  • Lowest 3 September, 2026

    39.9 °F

  • Average September

    50.8 °F

  • Highest 9 September, 2026

    71.1 °F

Climate (2021–2026)

Stampede Pass (41.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    41.5 °F

  • Average High 2021–2026

    48.2 °F
Get WillyWeather+ to remove ads