Union Valley Reservoir Weather Forecast

    • 60
    • 90

    Sunny

    • 59
    • 87

    Mostly Sunny

    • 58
    • 84

    Mostly Sunny

    • 56
    • 82

    Partly Sunny

    • 54
    • 78

    Slight Chance Thunderstorms

    • 52
    • 76

    Slight Chance Thunderstorms

Today 9 Aug Sierra Nevada of El Dorado and Amador Counties Between 3000-5000 ft Including Highway 50

Sunny. Highs 90 to 100. Light Winds becoming southwest up to 10 Mph in the afternoon.

Tonight 9 Aug Sierra Nevada of El Dorado and Amador Counties Between 3000-5000 ft Including Highway 50

Clear. Lows 64 to 74. Light Winds.

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Union Valley Reservoir Temperature Statistics

August Temperature

Placerville Airport (21.1 miles)

  • Lowest 1 August, 2026

    71.6 °F

  • Average August

    85 °F

  • Highest 3 August, 2026

    98.6 °F

Climate (2021–2026)

Placerville Airport (21.1 miles)

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  • Average Low 2021–2026

    52.6 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    69.1 °F
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