Grinnell Lake Weather Forecast

    • 18
    • 31

    Chance Snow

    • 12
    • 34

    Breezy

    • 17
    • 37

    Mostly Sunny

    • 21
    • 41

    Mostly Sunny

    • 24
    • 44

    Partly Sunny

    • 25
    • 44

    Mostly Sunny

    • 23
    • 43

    Mostly Sunny

Today 1 Apr Upper San Joaquin River

Mostly cloudy. Chance of rain in the morning. Chance of snow through the day. Rain likely in the afternoon. Snow accumulation up to 4 Inches. Total snow accumulation up to 9 Inches. Snow level 7300 feet. Highs 31 to 45. Southwest Winds 5 to 20 Mph with Gusts to around 60 Mph. Chance of precipitation 70 percent.

Tonight 1 Apr Upper San Joaquin River

Breezy. Mostly cloudy with a 50 percent chance of snow and rain. Lows 21 to 33. Southwest Winds 10 to 25 Mph. Gusts up to 65 Mph increasing to 85 Mph after midnight.

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Grinnell Lake Temperature Statistics

April Temperature

Mammoth Yosemite Airport (10.6 miles)

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  • Average April

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Climate (2021–Present)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2021–2026

    29.6 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    60.8 °F
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