Rio Vista Weather Forecast

    • 55
    • 79

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 62
    • 91

    Mostly Sunny

    • 60
    • 91

    Mostly Sunny

    • 57
    • 84

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

Today 21 Sep Central Solano County Including Fairfield and Vacaville

Mostly sunny. Highs 74 to 80. Southwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 21 Sep Central Solano County Including Fairfield and Vacaville

Clear. Lows around 56. Southwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rio Vista Temperature Statistics

September Temperature

Fairfield / Travis Air Force Base (15.5 miles)

  • Lowest 8 September, 2026

    49.6 °F

  • Average September

    70 °F

  • Highest 10 September, 2026

    104.7 °F

Climate (2021–2026)

Fairfield / Travis Air Force Base (15.5 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    74.7 °F
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