Lost Lake Weather Forecast

    • 37
    • 54

    Becoming Sunny

    • 41
    • 52

    Chance Rain

    • 36
    • 49

    Chance Rain

    • 42
    • 58

    Rain

    • 38
    • 44

    Rain

    • 39
    • 47

    Chance Rain Showers

    • 40
    • 49

    Chance Rain Showers

Today 15 Oct North Oregon Cascades

Sunny. Free air freezing level 9000 Feet, increasing to free air freezing level 10000 feet this afternoon. Pass Winds east 5 to 10 Mph, becoming light this afternoon.

Tonight 15 Oct North Oregon Cascades

Mostly clear. Free air freezing level 11000 Feet, increasing to free air freezing level 12000 feet after midnight. Winds light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lost Lake Temperature Statistics

October Temperature

Portland, Portland-Troutdale Airport (28.6 miles)

  • Lowest 13 October, 2025

    39 °F

  • Average October

    57 °F

  • Highest 7 October, 2025

    78.1 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (28.6 miles)

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

  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.1 °F
Get WillyWeather+ to remove ads