Mammoth Lakes Weather Forecast

    • 54
    • 77

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

    • 47
    • 69

    Mostly Sunny

    • 45
    • 66

    Sunny

    • 46
    • 67

    Sunny

    • 44
    • 65

    Sunny

Today 10 Sep Mono

Partly cloudy. Slight chance of Showers in the afternoon. Highs 78 to 88. Light Winds becoming west around 10 Mph in the afternoon.

Tonight 10 Sep Mono

Partly cloudy. Slight chance of Showers in the evening. Lows 45 to 55. West Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mammoth Lakes Temperature Statistics

September Temperature

Mammoth Yosemite Airport (6.8 miles)

  • Lowest 5 September, 2026

    33.8 °F

  • Average September

    57.1 °F

  • Highest 7 September, 2026

    73.4 °F

Climate (2021–2026)

Mammoth Yosemite Airport (6.8 miles)

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

  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.5 °F
Get WillyWeather+ to remove ads