Thousand Island Lake Weather Forecast

    • 34
    • 54

    Mostly Sunny

    • 35
    • 54

    Mostly Sunny

    • 36
    • 55

    Mostly Sunny

    • 42
    • 59

    Mostly Sunny

    • 45
    • 64

    Mostly Sunny

    • 46
    • 63

    Mostly Sunny

Today 30 Jun Upper San Joaquin River

Warmer, sunny. Highs 54 to 68. West Winds up to 5 Mph increasing to 5 to 15 Mph with Gusts to around 30 Mph in the afternoon.

Tonight 30 Jun Upper San Joaquin River

Mostly clear. Lows 35 to 47. Southwest Winds 5 to 10 Mph with Gusts to around 30 Mph shifting to the south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thousand Island Lake Temperature Statistics

June Temperature

Mammoth Yosemite Airport (19.3 miles)

  • Lowest 8 June, 2026

    33.8 °F

  • Average June

    65 °F

  • Highest 16 June, 2026

    86 °F

Climate (2021–2026)

Mammoth Yosemite Airport (19.3 miles)

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  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    60.6 °F
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