Hetch Hetchy Reservoir Weather Forecast

    • 41
    • 59

    Chance Rain

    • 42
    • 67

    Mostly Sunny

    • 44
    • 67

    Rain

    • 45
    • 63

    Rain Showers

    • 43
    • 55

    Rain Showers

    • 40
    • 56

    Rain Likely

    • 39
    • 54

    Rain

Today 17 Dec Yosemite NP outside of the valley

Partly sunny until late afternoon then clearing. Rain Showers likely and slight chance of Thunderstorms early in the morning. Chance of snow in the morning. Chance of rain in the late morning and afternoon. Little or no snow accumulation. Snow level above 8000 feet. Highs 46 to 58. West Winds up to 15 Mph. Gusts up to 50 Mph decreasing to 40 Mph in the afternoon. Chance of precipitation 70 percent.

Tonight 17 Dec Yosemite NP outside of the valley

Mostly clear. Near steady temperature in the mid 30s. North 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

December Temperature

MCMWTC BRIDGEPORT (30.4 miles)

  • Lowest 4 December, 2025

    12 °F
  • Average December

    34 °F
  • Highest 11 December, 2025

    66.9 °F

Climate (2020–Present)

MCMWTC BRIDGEPORT (30.4 miles)

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  • Average Low 2020–2025

    29.6 °F
  • Average 2020–2025

    45.4 °F
  • Average High 2020–2025

    60.5 °F
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