Grinnell Lake Weather Forecast

    • 15
    • 23

    Partly Sunny

    • 15
    • 27

    Mostly Sunny

    • 17
    • 33

    Mostly Sunny

    • 17
    • 33

    Mostly Sunny

    • 20
    • 35

    Partly Sunny

    • 24
    • 37

    Partly Sunny

    • 23
    • 38

    Partly Sunny

Today 21 Nov Upper San Joaquin River

Not as cold. Mostly sunny. A 50 percent chance of snow in the morning. Patchy dense fog in the late morning and afternoon. Highs 25 to 41. Northeast Winds 5 to 15 Mph. Gusts up to 45 Mph decreasing to 30 Mph in the afternoon.

Tonight 21 Nov Upper San Joaquin River

Mostly clear. Patchy dense fog. Near steady temperature in the mid 20s. Northeast Winds 10 to 15 Mph with Gusts to around 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Lake Temperature Statistics

November Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 1 November, 2025

    23 °F

  • Average November

    42.1 °F

  • Highest 1 November, 2025

    69.8 °F

Climate (2020–Present)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2020–2025

    29.7 °F

  • Average 2020–2025

    46 °F

  • Average High 2020–2025

    60.8 °F
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