Boulder Reservoir Weather Forecast

    • 37
    • 54

    Mostly Cloudy

    • 34
    • 52

    Becoming Sunny

    • 31
    • 53

    Mostly Sunny

    • 32
    • 55

    Mostly Sunny

    • 34
    • 56

    Sunny

    • 33
    • 58

    Mostly Sunny

    • 33
    • 57

    Partly Sunny

Today 31 Jan Northern Washoe County

Mostly cloudy in the morning then becoming partly cloudy. Highs 55 to 60. Light Winds becoming southeast around 10 Mph in the afternoon.

Tonight 31 Jan Northern Washoe County

Mostly cloudy. Lows 26 to 36. Light Winds.

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Boulder Reservoir Temperature Statistics

January Temperature

Alturas (42.9 miles)

  • Lowest 9 January, 2026

    4.6 °F

  • Average January

    35.7 °F

  • Highest 14 January, 2026

    60.7 °F

Climate (2021–Present)

Alturas (42.9 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    64.6 °F
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