Grinnell Lake Weather Forecast

    • 12
    • 31

    Mostly Sunny

    • 14
    • 36

    Mostly Sunny

    • 22
    • 32

    Chance Snow

    • 23
    • 32

    Chance Snow

    • 21
    • 37

    Slight Chance Snow

    • 18
    • 36

    Chance Snow

Today 29 Jan Upper San Joaquin River

Not as cold. Sunny. Highs 32 to 44. North Winds up to 10 Mph with Gusts to around 25 Mph.

Tonight 29 Jan Upper San Joaquin River

Mostly clear. Lows 17 to 29. Northeast Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grinnell Lake Temperature Statistics

January Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 21 January, 2025

    3.2 °F

  • Average January

    30.8 °F

  • Highest 10 January, 2025

    60.8 °F

Climate (2020–Present)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2020–2025

    29.8 °F

  • Average 2020–2025

    46.4 °F

  • Average High 2020–2025

    61.3 °F
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