Grinnell Lake Weather Forecast

    • 14
    • 36

    Increasing Clouds

    • 22
    • 32

    Blizzard

    • 23
    • 32

    Blizzard

    • 22
    • 33

    Chance Snow

    • 18
    • 34

    Snow Likely

    • 13
    • 28

    Blizzard

    • 6
    • 25

    Blizzard

Today 30 Jan Upper San Joaquin River

Sunny. Highs 36 to 48. Northeast Winds up to 10 Mph shifting to the southwest in the afternoon.

Tonight 30 Jan Upper San Joaquin River

Partly cloudy until early morning then becoming mostly cloudy. Lows 19 to 31. Southeast Winds up to 10 Mph. Gusts up to 25 Mph after midnight.

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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

    30.7 °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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