Allendale Weather Forecast

    • 49
    • 59

    Dense Fog

    • 53
    • 56

    Rain Showers

    • 53
    • 55

    Rain Showers

    • 54
    • 58

    Rain Showers

    • 50
    • 56

    Rain Showers Likely

    • 47
    • 52

    Rain Showers

    • 47
    • 53

    Rain Showers Likely

Today 18 Dec Southern Sacramento Valley

Mostly cloudy. Widespread fog. Locally dense in the Morning, then patchy fog in the afternoon. Highs 54 to 60. South Winds up to 10 Mph.

Tonight 18 Dec Southern Sacramento Valley

Mostly cloudy. Patchy fog after midnight. Widespread fog. Locally dense late in the night. A slight chance of rain Showers late in the night. Lows around 49. South Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allendale Temperature Statistics

December Temperature

Vacaville Nut Tree Airport (4.3 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    43.6 °F

  • Highest 3 December, 2025

    64.9 °F

Climate (2020–Present)

Vacaville Nut Tree Airport (4.3 miles)

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  • Average Low 2020–2025

    49.1 °F

  • Average 2020–2025

    62.8 °F

  • Average High 2020–2025

    76.8 °F
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