Mare Island Strait - Vallejo Weather Forecast

    • 59
    • 80

    Sunny

    • 60
    • 81

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

    • 54
    • 73

    Mostly Sunny

    • 54
    • 71

    Partly Sunny

    • 54
    • 69

    Mostly Cloudy

Today 18 Mar Carquinez Strait and Delta

Haze in the morning. Sunny. Highs around 88. Light Winds.

Tonight 18 Mar Carquinez Strait and Delta

Clear. Lows around 58. Light Winds.

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  • Temperature Real-Time

Mare Island Strait - Vallejo Temperature Statistics

March Temperature

Napa, Napa County Airport (6.8 miles)

  • Lowest 5 March, 2026

    37.7 °F

  • Average March

    57.8 °F

  • Highest 16 March, 2026

    81 °F

Climate (2021–Present)

Napa, Napa County Airport (6.8 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    70.1 °F
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