San Francisco Bay - Hercules, Refugio Landing Weather Forecast

    • 50
    • 60

    Mostly Sunny

    • 50
    • 60

    Mostly Sunny

    • 49
    • 61

    Partly Sunny

    • 50
    • 63

    Sunny

    • 50
    • 66

    Partly Sunny

    • 52
    • 64

    Partly Sunny

Today 13 Apr East Bay Interior Valleys

Partly cloudy late in the morning then becoming sunny. Highs in the mid 60s. Northwest Winds 5 to 15 Mph.

Tonight 13 Apr East Bay Interior Valleys

Mostly clear. Lows in the mid 40s. Southwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Francisco Bay - Hercules, Refugio Landing Temperature Statistics

April Temperature

Napa, Napa County Airport (12.4 miles)

  • Lowest 3 April, 2026

    38.6 °F

  • Average April

    59.1 °F

  • Highest 5 April, 2026

    83.6 °F

Climate (2021–Present)

Napa, Napa County Airport (12.4 miles)

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

  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.3 °F
Get WillyWeather+ to remove ads