Mare Island Shoreline Heritage Preserve Weather Forecast

    • 44
    • 60

    Increasing Clouds

    • 46
    • 60

    Mostly Cloudy

    • 47
    • 58

    Mostly Cloudy

    • 46
    • 60

    Patchy Fog

    • 46
    • 59

    Partly Sunny

    • 46
    • 58

    Patchy Fog

Today 19 Jan Carquinez Strait and Delta

Mostly cloudy in the morning then becoming mostly sunny. Haze and patchy dense fog through the day. Highs around 58. Northeast Winds up to 10 Mph.

Tonight 19 Jan Carquinez Strait and Delta

Partly cloudy. Patchy fog through the night. Lows around 41. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mare Island Shoreline Heritage Preserve Temperature Statistics

January Temperature

Napa, Napa County Airport (8.7 miles)

  • Lowest 9 January, 2026

    32 °F

  • Average January

    49.5 °F

  • Highest 15 January, 2026

    62.1 °F

Climate (2021–Present)

Napa, Napa County Airport (8.7 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    70.1 °F
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