Vacaville Weather in December
Vacaville in December sees moderate daytime temperatures of 14°C (57°F) and nighttime lows of 3°C (37°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.
Rainfall in Vacaville in December
As the month with the most rain, you'll want to have an umbrella with you to manage the frequent showers. Expect around 11 days of rain based on historical data, with 100 mm (3.9 in) average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Vacaville in December
In December, expect moderate temperatures in Vacaville, with highs of 14°C (57°F) and lows of 3°C (37°F) at night. December is a notable month of the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. During this period, the city experiences its coolest temperatures annually.
Sunshine in Vacaville in December
You can expect a moderate amount of sunlight, with approximately 141 hours. This means a pleasant mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May and October typically offer the best weather for Vacaville.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Vacaville's climate page.
Vacaville Temperature in December
Min Temperature
3°C (37°F)
Max Temperature
14°C (57°F)
Chance of Rain
35%
Precipitation
100 mm (3.9 in)
Rainy days
11 days
Humidity
83% *
Sunshine
141 hours *
Percentage Sunshine
48% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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What to Wear in Vacaville in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Vacaville in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Vacaville's climate page.
Temperature Rainfall Sunshine Humidity
See the full Vacaville climate overview or explore weather in the United States of America.
