Prospect Slough - French Island Weather Forecast

    • 54
    • 68

    Increasing Clouds

    • 50
    • 71

    Becoming Sunny

    • 50
    • 70

    Mostly Sunny

    • 53
    • 73

    Partly Sunny

    • 53
    • 75

    Partly Sunny

    • 54
    • 72

    Mostly Cloudy

    • 56
    • 68

    Rain Showers Likely

Today 6 Nov Carquinez Strait and Delta

Mostly cloudy in the morning then clearing. Highs 65 to 71. West Winds up to 10 Mph.

Tonight 6 Nov Carquinez Strait and Delta

Mostly clear. Near the Bay, mostly clear in the evening then becoming mostly cloudy. Lows around 54. West Winds up to 10 Mph.

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Prospect Slough - French Island Temperature Statistics

November Temperature

Fairfield / Travis Air Force Base (13.7 miles)

  • Lowest 1 November, 2025

    46.4 °F

  • Average November

    61.1 °F

  • Highest 2 November, 2025

    79.7 °F

Climate (2020–Present)

Fairfield / Travis Air Force Base (13.7 miles)

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  • Average Low 2020–2025

    48.5 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    75.2 °F
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