Mare Island Shoreline Heritage Preserve Weather Forecast

    • 50
    • 58

    Increasing Clouds

    • 52
    • 56

    Rain Likely

    • 47
    • 55

    Rain Likely

    • 48
    • 58

    Mostly Sunny

    • 48
    • 58

    Mostly Sunny

    • 47
    • 58

    Partly Sunny

    • 48
    • 58

    Mostly Cloudy

Today 18 Nov Carquinez Strait and Delta

Mostly sunny. Highs around 60. Northeast Winds up to 10 Mph in the morning becoming light.

Tonight 18 Nov Carquinez Strait and Delta

Mostly clear. Lows around 46. Light Winds.

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Mare Island Shoreline Heritage Preserve Temperature Statistics

November Temperature

Napa, Napa County Airport (8.7 miles)

  • Lowest 1 November, 2025

    44.1 °F

  • Average November

    59 °F

  • Highest 10 November, 2025

    79 °F

Climate (2020–Present)

Napa, Napa County Airport (8.7 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    70.3 °F
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