Bethany Reservoir Weather Forecast

    • 58
    • 83

    Breezy

    • 58
    • 81

    Sunny

    • 59
    • 87

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

    • 60
    • 87

    Mostly Sunny

Today 12 Sep East Bay Interior Valleys

Sunny. Highs in the lower to mid 80s. Southwest Winds 10 to 20 Mph.

Tonight 12 Sep East Bay Interior Valleys

Clear. Lows in the mid 50s. Southwest Winds 10 to 20 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Bethany Reservoir Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (12.4 miles)

  • Lowest 5 September, 2026

    50.6 °F

  • Average September

    70.2 °F

  • Highest 9 September, 2026

    102 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (12.4 miles)

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

  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    74.1 °F
Get WillyWeather+ to remove ads