Boulder Reservoir Weather Forecast

    • 46
    • 72

    Increasing Clouds

    • 50
    • 74

    Mostly Cloudy

    • 50
    • 77

    Partly Sunny

    • 51
    • 79

    Mostly Sunny

    • 52
    • 79

    Mostly Sunny

    • 51
    • 80

    Mostly Sunny

Today 19 Sep Northern Washoe County

Sunny. Highs 72 to 82. Light Winds.

Tonight 19 Sep Northern Washoe County

Clear. Lows 44 to 54. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Boulder Reservoir Temperature Statistics

September Temperature

Alturas (42.9 miles)

  • Lowest 14 September, 2026

    28.7 °F

  • Average September

    58.8 °F

  • Highest 10 September, 2026

    85.6 °F

Climate (2021–2026)

Alturas (42.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    64.7 °F
Get WillyWeather+ to remove ads