Sacramento River - Montezuma Island Weather Forecast

    • 51
    • 59

    Decreasing Clouds

    • 55
    • 58

    Rain

    • 55
    • 57

    Rain

    • 56
    • 59

    Rain

    • 54
    • 58

    Rain Likely

    • 50
    • 55

    Rain

    • 52
    • 54

    Rain Likely

Today 18 Dec Carquinez Strait and Delta

Widespread fog. Locally dense in the morning. Mostly cloudy. Highs around 58. Light Winds.

Tonight 18 Dec Carquinez Strait and Delta

Mostly cloudy. Patchy fog after midnight. Widespread fog. Locally dense late in the night. A slight chance of rain Showers late in the night. Lows around 49. South Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sacramento River - Montezuma Island Temperature Statistics

December Temperature

Concord, Buchanan Field (12.4 miles)

  • Lowest 4 December, 2025

    37.9 °F

  • Average December

    44.4 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Concord, Buchanan Field (12.4 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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