Vacaville
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Vacaville, CA

A beautiful blue water lagoon set in Vacaville, California, amid scenic greenery of trees and vast fields, hill ranges, and a walking path around the water
A beautiful blue water lagoon set in Vacaville, California, amid scenic greenery of trees and vast fields, hill ranges, and a walking path around the water
December, the first month of the winter, in Vacaville, is also a moderate month, with average temperature ranging between min 39°F (3.9°C) and max 55.9°F (13.3°C).

Temperature

January and December, with an average high-temperature of 55.9°F (13.3°C), are the coldest months.

Rainfall

During December, Vacaville regularly aggregates up to 5.2" (132.8mm) of precipitation. Throughout the year, in Vacaville, California, 26.3" (668mm) of rain is accumulated.

Daylight

With an average of 9.5h of daylight, December has the shortest days of the year.

What are the coldest months in Vacaville?

January and December, with an average high-temperature of 55.9°F (13.3°C), are the coldest months in Vacaville, California.

What is the temperature in December in Vacaville?

In Vacaville, California, in December, the average high-temperature is 55.9°F (13.3°C), and the average low-temperature is 39°F (3.9°C).

How much does it rain in Vacaville in December?

During December, Vacaville regularly aggregates up to 5.2" (132.8mm) of precipitation.

What is the month with the shortest days in Vacaville?

The month with the shortest days is December, with an average of 9.5h of daylight.

What is the average length of the day in December in Vacaville?

In December, the average length of the day in Vacaville is 9.5h.
Average temperature in December - Vacaville, CA
  • Average high temperature in December: 56°F

The warmest month (with the highest average high temperature) is July (96°F).
Months with the lowest average high temperature are January and December (56°F).

  • Average low temperature in December: 39°F

The month with the highest average low temperature is July (60°F).
Coldest months (with the lowest average low temperature) are January and December (39°F).

Average rainfall in December - Vacaville, CA
  • Average rainfall in December: 5.2"

The wettest month (with the highest rainfall) is February (5.4").
The driest month (with the lowest rainfall) is July (0").

Average daylight in December - Vacaville, CA
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).