Grizzly Bay - Andy Mason Slough Weather Forecast

    • 46
    • 64

    Becoming Sunny

    • 50
    • 64

    Mostly Cloudy

    • 48
    • 64

    Partly Sunny

    • 49
    • 65

    Mostly Cloudy

    • 48
    • 62

    Chance Rain

    • 45
    • 58

    Chance Rain

Today 4 Feb Carquinez Strait and Delta

Mostly cloudy in the morning then clearing. Widespread fog. Locally dense until late afternoon. Highs around 65. Northeast Winds up to 10 Mph.

Tonight 4 Feb Carquinez Strait and Delta

Clear in the evening then becoming partly cloudy. Lows 40 to 45. Light Winds.

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Grizzly Bay - Andy Mason Slough Temperature Statistics

February Temperature

Concord, Buchanan Field (7.5 miles)

  • Lowest 1 February, 2026

    42.1 °F

  • Average February

    53.7 °F

  • Highest 2 February, 2026

    70 °F

Climate (2021–Present)

Concord, Buchanan Field (7.5 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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