Mare Island Strait - Ernest D. Wichels Memorial Causeway Weather Forecast

    • 56
    • 62

    Rain Showers Likely

    • 54
    • 59

    Rain Showers

    • 49
    • 55

    Rain Showers

    • 47
    • 53

    Rain Showers

    • 47
    • 57

    Mostly Sunny

    • 48
    • 62

    Mostly Sunny

Today 9 Apr Carquinez Strait and Delta

Mostly cloudy in the morning then becoming mostly sunny. Highs 70 to 76. West Winds up to 10 Mph with Gusts to around 20 Mph.

Tonight 9 Apr Carquinez Strait and Delta

Mostly cloudy with a chance of rain Showers and a slight chance of Thunderstorms. Lows around 55. West Winds up to 10 Mph with Gusts to around 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mare Island Strait - Ernest D. Wichels Memorial Causeway Temperature Statistics

April Temperature

Napa, Napa County Airport (6.2 miles)

  • Lowest 3 April, 2026

    38.6 °F

  • Average April

    58.9 °F

  • Highest 5 April, 2026

    83.6 °F

Climate (2021–Present)

Napa, Napa County Airport (6.2 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    70.3 °F
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