Sacramento River - Sandy Beach Weather Forecast

    • 47
    • 48

    Increasing Clouds

    • 55
    • 57

    Chance Rain

    • 51
    • 62

    Slight Chance Rain

    • 54
    • 59

    Chance Rain

    • 56
    • 59

    Rain

    • 52
    • 56

    Rain Likely

Today 15 Dec Carquinez Strait and Delta

Mostly cloudy. Areas of fog. Locally dense until late Afternoon, then patchy fog late in the afternoon. Not as cool. Highs 52 to 58. Light Winds.

Tonight 15 Dec Carquinez Strait and Delta

Mostly cloudy. Patchy fog through the night. Lows around 45. Light Winds.

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Sacramento River - Sandy Beach Temperature Statistics

December Temperature

Concord, Buchanan Field (14.9 miles)

  • Lowest 4 December, 2025

    37.9 °F

  • Average December

    44.7 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Concord, Buchanan Field (14.9 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.2 °F

  • Average High 2020–2025

    74.2 °F
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