Vacaville Weather Forecast

    • 42
    • 53

    Mostly Cloudy

    • 44
    • 55

    Partly Sunny

    • 44
    • 60

    Partly Sunny

    • 44
    • 60

    Partly Sunny

    • 42
    • 60

    Partly Sunny

    • 44
    • 59

    Partly Sunny

Today 8 Dec Southern Sacramento Valley

Widespread fog. Locally dense in the Morning, then patchy fog early in the afternoon. Mostly cloudy. Highs 49 to 56. Light Winds.

Tonight 8 Dec Southern Sacramento Valley

Mostly cloudy. Lows around 41. Light Winds.

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Vacaville Temperature Statistics

December Temperature

Vacaville Nut Tree Airport (1.9 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    45.1 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Vacaville Nut Tree Airport (1.9 miles)

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  • Average Low 2020–2025

    49.1 °F

  • Average 2020–2025

    62.8 °F

  • Average High 2020–2025

    76.9 °F
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