Sacramento River - Decker Island Weather Forecast

    • 44
    • 54

    Increasing Clouds

    • 45
    • 54

    Mostly Cloudy

    • 45
    • 55

    Mostly Cloudy

    • 47
    • 55

    Mostly Cloudy

    • 47
    • 57

    Patchy Fog

    • 46
    • 58

    Partly Sunny

    • 46
    • 56

    Areas Fog

Today 6 Dec Carquinez Strait and Delta

Mostly cloudy in the morning then becoming partly cloudy. Areas of fog in the Morning, then patchy fog early in the afternoon. Highs around 55. Light Winds.

Tonight 6 Dec Carquinez Strait and Delta

Mostly clear in the evening then becoming mostly cloudy. Patchy fog in the late evening and overnight. Lows around 42. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sacramento River - Decker Island Temperature Statistics

December Temperature

Fairfield / Travis Air Force Base (16.8 miles)

  • Lowest 4 December, 2025

    35.2 °F

  • Average December

    46.3 °F

  • Highest 3 December, 2025

    64.8 °F

Climate (2020–Present)

Fairfield / Travis Air Force Base (16.8 miles)

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  • Average Low 2020–2025

    48.6 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    75.1 °F
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