Grinnell Lake Weather Forecast

    • 39
    • 61

    Partly Sunny

    • 39
    • 61

    Mostly Sunny

    • 37
    • 59

    Partly Sunny

    • 37
    • 56

    Partly Sunny

    • 37
    • 57

    Mostly Sunny

    • 36
    • 58

    Mostly Sunny

Today 2 Oct Upper San Joaquin River

Sunny in the morning then becoming partly sunny. Patchy smoke late in the afternoon. Highs 61 to 77. Southwest Winds up to 10 Mph.

Tonight 2 Oct Upper San Joaquin River

Mostly cloudy in the evening then becoming partly cloudy. Patchy smoke. Lows 43 to 55. Northeast Winds up to 5 Mph. Gusts up to 25 Mph in the evening.

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Grinnell Lake Temperature Statistics

October Temperature

Mammoth Yosemite Airport (10.6 miles)

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  • Average October

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Climate (2021–2026)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2021–2026

    29.4 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.5 °F
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