Grinnell Lake Weather Forecast

    • 41
    • 66

    Mostly Sunny

    • 42
    • 66

    Mostly Sunny

    • 45
    • 68

    Mostly Sunny

    • 49
    • 70

    Partly Sunny

    • 48
    • 65

    Chance Rain

    • 46
    • 62

    Chance Thunderstorms

    • 46
    • 62

    Chance Thunderstorms

Today 8 Jul Upper San Joaquin River

Sunny. Highs 65 to 79. Southwest Winds up to 10 Mph increasing to 10 to 15 Mph in the afternoon. Gusts up to 30 Mph.

Tonight 8 Jul Upper San Joaquin River

Clear. Lows 44 to 54. Southwest Winds up to 10 Mph. Gusts up to 30 Mph in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Lake Temperature Statistics

July Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 4 July, 2026

    39.2 °F

  • Average July

    63.2 °F

  • Highest 4 July, 2026

    82.4 °F

Climate (2021–2026)

Mammoth Yosemite Airport (10.6 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

    60.6 °F
Get WillyWeather+ to remove ads