San Francisco Bay - Hercules, Refugio Landing Weather Forecast

    • 55
    • 72

    Mostly Sunny

    • 57
    • 74

    Mostly Sunny

    • 54
    • 67

    Mostly Sunny

    • 53
    • 67

    Mostly Sunny

    • 55
    • 68

    Partly Sunny

    • 54
    • 69

    Mostly Sunny

Today 4 Jun East Bay Interior Valleys

Sunny. Highs in the mid 80s to lower 90s. West Winds 5 to 15 Mph.

Tonight 4 Jun East Bay Interior Valleys

Mostly clear. Lows in the mid to upper 50s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Hercules, Refugio Landing Temperature Statistics

June Temperature

Napa, Napa County Airport (12.4 miles)

  • Lowest 1 June, 2026

    51.1 °F

  • Average June

    64.5 °F

  • Highest 1 June, 2026

    80.1 °F

Climate (2021–Present)

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

    70.2 °F
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