Mount Vaca Weather Forecast

    • 64
    • 78

    Chance Rain Showers

    • 66
    • 70

    Chance Rain Showers

    • 68
    • 74

    Sunny

    • 71
    • 78

    Sunny

    • 70
    • 84

    Mostly Sunny

    • 67
    • 73

    Chance Rain Showers

Today 18 Sep North Bay Interior Mountains

Mostly cloudy. A slight chance of Showers in the afternoon. Highs in the lower 70s to mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 18 Sep North Bay Interior Mountains

Mostly cloudy. A slight chance of Showers in the evening. Isolated Thunderstorms. A chance of Showers after midnight. Lows in the lower to mid 60s. Southwest Winds up to 5 Mph in the evening. Becoming light.

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Mount Vaca Temperature Statistics

September Temperature

Vacaville Nut Tree Airport (8.1 miles)

  • Lowest 7 September, 2025

    54 °F

  • Average September

    73 °F

  • Highest 1 September, 2025

    100.9 °F

Climate (2020–Present)

Vacaville Nut Tree Airport (8.1 miles)

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  • Average Low 2020–2025

    49 °F

  • Average 2020–2025

    63 °F

  • Average High 2020–2025

    77.2 °F
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