Boulder Reservoir Weather Forecast

    • 60
    • 87

    Chance Rain Showers

    • 60
    • 84

    Mostly Cloudy

    • 58
    • 86

    Partly Sunny

    • 55
    • 88

    Mostly Sunny

    • 55
    • 88

    Mostly Sunny

    • 54
    • 87

    Mostly Sunny

Today 20 Jul Northern Washoe County

Mostly cloudy in the morning then clearing. Highs 89 to 99. West Winds 10 to 15 Mph.

Tonight 20 Jul Northern Washoe County

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows 60 to 70. West Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening.

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Boulder Reservoir Temperature Statistics

July Temperature

Alturas (42.9 miles)

  • Lowest 1 July, 2026

    38.6 °F
  • Average July

    69.2 °F
  • Highest 11 July, 2026

    95.6 °F

Climate (2021–2026)

Alturas (42.9 miles)

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  • Average Low 2021–2026

    33.4 °F
  • Average 2021–2026

    49.3 °F
  • Average High 2021–2026

    64.7 °F
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