Boulder Reservoir Weather Forecast

    • 31
    • 44

    Partly Sunny

    • 30
    • 49

    Decreasing Clouds

    • 35
    • 50

    Mostly Cloudy

    • 37
    • 53

    Mostly Cloudy

    • 37
    • 54

    Mostly Cloudy

    • 33
    • 53

    Mostly Sunny

    • 33
    • 53

    Mostly Sunny

Today 6 Dec Northern Washoe County

Partly cloudy. Highs 47 to 57. West Winds 10 to 15 Mph.

Tonight 6 Dec Northern Washoe County

Partly cloudy. Lows 27 to 32. West Winds around 10 Mph in the evening becoming light.

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Boulder Reservoir Temperature Statistics

December Temperature

Alturas (42.9 miles)

  • Lowest 1 December, 2025

    15.1 °F

  • Average December

    33.5 °F

  • Highest 1 December, 2025

    51.1 °F

Climate (2020–Present)

Alturas (42.9 miles)

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  • Average Low 2020–2025

    33.2 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    64.3 °F
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