Prospect Slough - French Island Weather Forecast

    • 59
    • 83

    Gradual Clearing

    • 57
    • 83

    Mostly Sunny

    • 58
    • 84

    Sunny

    • 56
    • 77

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

    • 57
    • 83

    Mostly Sunny

Today 28 Aug Central Solano County Including Fairfield and Vacaville

Mostly cloudy. A slight chance of rain in the morning. Highs 80 to 86. Southwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 28 Aug Central Solano County Including Fairfield and Vacaville

Mostly clear. Lows around 58. Southwest Winds 10 to 15 Mph. Gusts up to 30 Mph after midnight.

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Prospect Slough - French Island Temperature Statistics

August Temperature

Fairfield / Travis Air Force Base (13.7 miles)

  • Lowest 20 August, 2026

    56.1 °F

  • Average August

    72.5 °F

  • Highest 3 August, 2026

    104.9 °F

Climate (2021–2026)

Fairfield / Travis Air Force Base (13.7 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    74.8 °F
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