Ostrander Lake Weather Forecast

    • 47
    • 60

    Sunny

    • 44
    • 56

    Mostly Sunny

    • 44
    • 58

    Sunny

    • 44
    • 57

    Mostly Sunny

    • 46
    • 58

    Mostly Sunny

    • 48
    • 60

    Mostly Sunny

Today 12 Sep Yosemite NP outside of the valley

Sunny. Highs 61 to 75. South Winds 5 to 15 Mph with Gusts to around 35 Mph.

Tonight 12 Sep Yosemite NP outside of the valley

Clear. Lows 38 to 50. South Winds up to 10 Mph with Gusts to around 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ostrander Lake Temperature Statistics

September Temperature

Mammoth Yosemite Airport (38.5 miles)

  • Lowest 5 September, 2026

    33.8 °F

  • Average September

    59.6 °F

  • Highest 9 September, 2026

    84.2 °F

Climate (2021–2026)

Mammoth Yosemite Airport (38.5 miles)

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  • Average Low 2021–2026

    29.4 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.5 °F
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