Hearthstone Weather Forecast

    • 58
    • 93

    Sunny

    • 56
    • 90

    Sunny

    • 54
    • 85

    Mostly Sunny

    • 54
    • 81

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 54
    • 76

    Sunny

Today 21 May East Bay Interior Valleys

Sunny. Highs in the lower 90s. West Winds up to 5 Mph increasing to 5 to 15 Mph in the afternoon.

Tonight 21 May East Bay Interior Valleys

Clear. Lows in the mid 50s. West Winds 5 to 15 Mph.

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Hearthstone Temperature Statistics

May Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 14 May, 2026

    47.6 °F

  • Average May

    64.2 °F

  • Highest 11 May, 2026

    91.7 °F

Climate (2021–Present)

Livermore, Livermore Municipal Airport (17.4 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    60.9 °F

  • Average High 2021–2026

    74.1 °F
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