San Joaquin River - West Island Weather Forecast

    • 44
    • 59

    Dense Fog

    • 47
    • 62

    Decreasing Clouds

    • 43
    • 63

    Mostly Sunny

    • 45
    • 62

    Mostly Sunny

    • 46
    • 63

    Partly Sunny

    • 48
    • 63

    Partly Sunny

    • 48
    • 64

    Partly Sunny

Today 31 Jan Carquinez Strait and Delta

Widespread fog. Locally dense in the morning. Patchy dense fog early in the afternoon. Mostly cloudy. Highs around 61. Northeast Winds up to 10 Mph.

Tonight 31 Jan Carquinez Strait and Delta

Mostly cloudy. Patchy fog in the late evening and early morning. Widespread fog. Locally dense late in the night. Lows around 42. Light Winds.

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San Joaquin River - West Island Temperature Statistics

January Temperature

Concord, Buchanan Field (14.9 miles)

  • Lowest 10 January, 2026

    33.7 °F

  • Average January

    50.4 °F

  • Highest 15 January, 2026

    68.6 °F

Climate (2021–Present)

Concord, Buchanan Field (14.9 miles)

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  • Average Low 2021–2026

    50.9 °F

  • Average 2021–2026

    61.3 °F

  • Average High 2021–2026

    74.2 °F
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