Grinnell Lake Weather Forecast

    • 37
    • 57

    Mostly Sunny

    • 40
    • 60

    Mostly Sunny

    • 42
    • 63

    Mostly Sunny

    • 43
    • 62

    Partly Sunny

    • 43
    • 62

    Mostly Sunny

    • 44
    • 65

    Mostly Sunny

Today 2 Jul Upper San Joaquin River

Sunny. Highs 56 to 70. South Winds up to 5 Mph shifting to the southwest in the afternoon. Gusts up to 25 Mph.

Tonight 2 Jul Upper San Joaquin River

Mostly clear. Lows 40 to 50. Southwest Winds up to 10 Mph shifting to the east after midnight.

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Grinnell Lake Temperature Statistics

July Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest

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  • Average July

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Climate (2021–2026)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    60.6 °F
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