Hetch Hetchy Reservoir Weather Forecast

    • 51
    • 82

    Mostly Sunny

    • 52
    • 82

    Slight Chance Thunderstorms

    • 51
    • 83

    Slight Chance Thunderstorms

    • 50
    • 83

    Mostly Sunny

    • 50
    • 82

    Sunny

    • 54
    • 85

    Sunny

Today 22 Jul Yosemite NP outside of the valley

Sunny. Highs 58 to 70. Southwest Winds up to 15 Mph.

Tonight 22 Jul Yosemite NP outside of the valley

Mostly clear. Lows 37 to 49. South Winds up to 10 Mph shifting to the east after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hetch Hetchy Reservoir Temperature Statistics

July Temperature

MCMWTC BRIDGEPORT (30.4 miles)

  • Lowest 5 July, 2025

    34 °F

  • Average July

    65.7 °F

  • Highest 14 July, 2025

    93 °F

Climate (2020–Present)

MCMWTC BRIDGEPORT (30.4 miles)

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  • Average Low 2020–2025

    29.3 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    60.7 °F
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