Hetch Hetchy Reservoir Weather Forecast

    • 49
    • 85

    Increasing Clouds

    • 44
    • 76

    Sunny

    • 46
    • 73

    Mostly Sunny

    • 47
    • 76

    Mostly Sunny

    • 48
    • 75

    Mostly Sunny

    • 50
    • 76

    Chance Rain

    • 53
    • 79

    Chance Rain Showers

Today 31 Aug Yosemite NP outside of the valley

Sunny. Highs 60 to 74. South Winds up to 15 Mph.

Tonight 31 Aug Yosemite NP outside of the valley

Colder. Partly cloudy. Lows 35 to 47. South Winds up to 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hetch Hetchy Reservoir Temperature Statistics

August Temperature

MCMWTC BRIDGEPORT (30.4 miles)

  • Lowest 15 August, 2026

    37.9 °F

  • Average August

    67.3 °F

  • Highest 1 August, 2026

    93 °F

Climate (2021–2026)

MCMWTC BRIDGEPORT (30.4 miles)

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  • Average Low 2021–2026

    29.9 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.6 °F
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