Three Island Lake Weather Forecast

    • 32
    • 46

    Partly Sunny

    • 29
    • 45

    Decreasing Clouds

    • 28
    • 44

    Partly Sunny

    • 28
    • 43

    Mostly Sunny

    • 24
    • 38

    Snow Likely

    • 19
    • 27

    Snow Likely

    • 17
    • 26

    Chance Snow

Today 26 Mar Upper San Joaquin River

Mostly sunny. Highs 51 to 69. West Winds up to 10 Mph.

Tonight 26 Mar Upper San Joaquin River

Mostly cloudy until early morning then becoming partly cloudy. Lows 34 to 48. East Winds 5 to 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Island Lake Temperature Statistics

March Temperature

Mammoth Yosemite Airport (23 miles)

  • Lowest 4 March, 2026

    19.4 °F

  • Average March

    46 °F

  • Highest 19 March, 2026

    78.8 °F

Climate (2021–Present)

Mammoth Yosemite Airport (23 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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