Mare Island Shoreline Heritage Preserve Weather Forecast

    • 58
    • 74

    Increasing Clouds

    • 55
    • 62

    Gradual Clearing

    • 54
    • 64

    Partly Sunny

    • 59
    • 65

    Chance Rain

    • 55
    • 62

    Chance Rain

    • 54
    • 60

    Chance Rain

    • 53
    • 62

    Partly Sunny

Today 21 Oct Carquinez Strait and Delta

Sunny. Highs 76 to 81. North Winds up to 10 Mph.

Tonight 21 Oct Carquinez Strait and Delta

Clear in the evening then becoming mostly cloudy. Lows around 57. West Winds up to 15 Mph. Gusts up to 20 Mph increasing to 30 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mare Island Shoreline Heritage Preserve Temperature Statistics

October Temperature

Napa, Napa County Airport (8.7 miles)

  • Lowest 12 October, 2025

    42.1 °F

  • Average October

    60.3 °F

  • Highest 7 October, 2025

    88 °F

Climate (2020–Present)

Napa, Napa County Airport (8.7 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    70.3 °F
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