Boulder Reservoir Weather Forecast

    • 47
    • 75

    Partly Sunny

    • 47
    • 76

    Mostly Sunny

    • 40
    • 75

    Breezy

    • 32
    • 54

    Breezy

    • 36
    • 54

    Chance Rain/Snow

    • 40
    • 60

    Chance Rain Showers

Today 23 May Northern Washoe County

Sunny. Highs 79 to 89. Southwest Winds 10 to 15 Mph.

Tonight 23 May Northern Washoe County

Partly cloudy. Lows 46 to 56. West Winds 15 to 20 Mph with Gusts up to 30 Mph decreasing to around 10 Mph after midnight.

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  • Temperature Forecast NOAA

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Boulder Reservoir Temperature Statistics

May Temperature

Alturas (42.9 miles)

  • Lowest 19 May, 2026

    27.6 °F

  • Average May

    56.1 °F

  • Highest 12 May, 2026

    88.6 °F

Climate (2021–Present)

Alturas (42.9 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    65 °F
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