Sand Mound Slough - Dutch Slough Entrance Weather Forecast

    • 42
    • 52

    Mostly Cloudy

    • 43
    • 55

    Partly Sunny

    • 44
    • 57

    Mostly Cloudy

    • 45
    • 59

    Partly Sunny

    • 45
    • 60

    Partly Sunny

    • 44
    • 60

    Patchy Fog

Today 7 Dec East Bay Interior Valleys

Mostly cloudy. Highs in the 50s to lower 60s. Northeast Winds around 5 Mph.

Tonight 7 Dec East Bay Interior Valleys

Partly cloudy. Patchy dense fog after midnight. Lows in the lower 40s. Northeast Winds 5 to 10 Mph.

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Sand Mound Slough - Dutch Slough Entrance Temperature Statistics

December Temperature

Concord, Buchanan Field (23 miles)

  • Lowest 4 December, 2025

    37.9 °F

  • Average December

    46.2 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Concord, Buchanan Field (23 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.3 °F

  • Average High 2020–2025

    74.3 °F
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