Helen Lake Weather Forecast

    • 40
    • 54

    Mostly Sunny

    • 40
    • 54

    Partly Sunny

    • 38
    • 49

    Chance Rain/Snow

    • 35
    • 43

    Rain/Snow Likely

    • 35
    • 46

    Chance Rain/Snow

    • 37
    • 49

    Mostly Sunny

Today 16 Sep Yosemite NP outside of the valley

Sunny. Highs 62 to 76. Southeast Winds up to 10 Mph shifting to the southwest in the afternoon.

Tonight 16 Sep Yosemite NP outside of the valley

Mostly clear. Lows 42 to 56. East Winds up to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Helen Lake Temperature Statistics

September Temperature

Mammoth Yosemite Airport (25.5 miles)

  • Lowest 7 September, 2025

    35.6 °F

  • Average September

    57.4 °F

  • Highest 1 September, 2025

    80.6 °F

Climate (2020–Present)

Mammoth Yosemite Airport (25.5 miles)

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

  • Average Low 2020–2025

    29.7 °F

  • Average 2020–2025

    46.2 °F

  • Average High 2020–2025

    61 °F
Get WillyWeather+ to remove ads