Boulder Reservoir Weather Forecast

    • 38
    • 66

    Increasing Clouds

    • 30
    • 56

    Breezy

    • 30
    • 51

    Breezy

    • 35
    • 59

    Mostly Sunny

    • 40
    • 66

    Mostly Sunny

    • 45
    • 73

    Mostly Sunny

Today 15 May Northern Washoe County

Sunny. Highs 71 to 81. Light Winds becoming west around 10 Mph in the afternoon.

Tonight 15 May Northern Washoe County

Partly cloudy in the evening then becoming mostly cloudy. Lows 37 to 47. Northwest Winds 15 to 25 Mph decreasing to 10 to 15 Mph after midnight. Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

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Boulder Reservoir Temperature Statistics

May Temperature

Alturas (42.9 miles)

  • Lowest 1 May, 2026

    30.7 °F

  • Average May

    58.9 °F

  • Highest 12 May, 2026

    88.6 °F

Climate (2021–Present)

Alturas (42.9 miles)

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  • Average Low 2021–2026

    33.6 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    65 °F
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