San Francisco Bay - Hercules, Refugio Landing Weather Forecast

    • 57
    • 70

    Mostly Sunny

    • 57
    • 70

    Mostly Sunny

    • 58
    • 72

    Mostly Sunny

    • 58
    • 74

    Mostly Sunny

    • 58
    • 76

    Mostly Sunny

    • 58
    • 77

    Mostly Sunny

Today 23 Jul East Bay Interior Valleys

Sunny. Highs in the 80s. West Winds 5 to 15 Mph.

Tonight 23 Jul East Bay Interior Valleys

Clear. Lows in the upper 50s. Southwest Winds 5 to 15 Mph.

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  • Temperature Real-Time

San Francisco Bay - Hercules, Refugio Landing Temperature Statistics

July Temperature

Napa, Napa County Airport (12.4 miles)

  • Lowest 11 July, 2026

    48.7 °F

  • Average July

    66.5 °F

  • Highest 13 July, 2026

    89.7 °F

Climate (2021–2026)

Napa, Napa County Airport (12.4 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    70.3 °F
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