Sacramento River - Decker Island Weather Forecast

    • 65
    • 87

    Sunny

    • 66
    • 88

    Sunny

    • 67
    • 88

    Mostly Sunny

    • 66
    • 79

    Chance Rain Showers

    • 65
    • 78

    Slight Chance Rain Showers

    • 64
    • 77

    Mostly Sunny

Today 15 Sep Carquinez Strait and Delta

Sunny. Highs 89 to 95. Northwest Winds up to 10 Mph with Gusts to around 20 Mph.

Tonight 15 Sep Carquinez Strait and Delta

Clear. Lows 60 to 66. West Winds up to 10 Mph.

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  • Temperature Real-Time

Sacramento River - Decker Island Temperature Statistics

September Temperature

Fairfield / Travis Air Force Base (16.8 miles)

  • Lowest 4 September, 2025

    57.4 °F

  • Average September

    68.8 °F

  • Highest 3 September, 2025

    92.5 °F

Climate (2020–Present)

Fairfield / Travis Air Force Base (16.8 miles)

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  • Average Low 2020–2025

    48.5 °F

  • Average 2020–2025

    60.5 °F

  • Average High 2020–2025

    75.5 °F
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