Bethany Reservoir Weather Forecast

    • 39
    • 58

    Increasing Clouds

    • 46
    • 54

    Mostly Cloudy

    • 47
    • 59

    Mostly Cloudy

    • 45
    • 61

    Partly Sunny

    • 42
    • 59

    Partly Sunny

    • 44
    • 59

    Mostly Cloudy

    • 43
    • 59

    Partly Sunny

Today 19 Jan East Bay Interior Valleys

Partly cloudy late in the morning then becoming sunny. Patchy fog late in the morning. Highs in the upper 50s to mid 60s. Northeast Winds around 5 Mph.

Tonight 19 Jan East Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Areas of fog in the evening. Patchy dense fog after midnight. Lows in the lower 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bethany Reservoir Temperature Statistics

January Temperature

Livermore, Livermore Municipal Airport (12.4 miles)

  • Lowest 10 January, 2026

    32 °F

  • Average January

    49.2 °F

  • Highest 16 January, 2026

    70 °F

Climate (2021–Present)

Livermore, Livermore Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    60.6 °F

  • Average High 2021–2026

    73.9 °F
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