Helen Lake Weather Forecast

    • 18
    • 27

    Blustery

    • 21
    • 29

    Partly Sunny

    • 24
    • 27

    Snow

    • 21
    • 25

    Snow

    • 18
    • 24

    Snow Likely

    • 15
    • 19

    Snow Likely

Today 29 Dec Yosemite NP outside of the valley

Not as cool. Sunny. Highs 37 to 51. Northeast Winds 5 to 15 Mph. Gusts up to 35 Mph in the morning.

Tonight 29 Dec Yosemite NP outside of the valley

Clear. Lows 21 to 35. Northeast Winds 5 to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helen Lake Temperature Statistics

December Temperature

Mammoth Yosemite Airport (25.5 miles)

  • Lowest 27 December, 2025

    3.2 °F

  • Average December

    38.2 °F

  • Highest 11 December, 2025

    66.2 °F

Climate (2020–Present)

Mammoth Yosemite Airport (25.5 miles)

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  • Average Low 2020–2025

    29.7 °F

  • Average 2020–2025

    46 °F

  • Average High 2020–2025

    60.9 °F
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