Vallejo Weather in December
Thinking of visiting Vallejo in December? Expect moderate temperatures reaching 14°C (57°F) during the day, dropping to 4°C (39°F) at night, and be prepared for the wettest month of the year.
Rainfall in Vallejo in December
This month sees the most rain, so carrying an umbrella will ensure you stay dry. The climate data from previous years indicates about 12 days of rain, averaging 101 mm (4 in) for the month. 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 Vallejo in December
Daytime highs in Vallejo in December reach 14°C (57°F), with nights around 4°C (39°F). December is typically considered a winter month. Conditions are often most pleasant around the middle of the day. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. This month often claims the chilliest averages of the year.
Sunshine in Vallejo in December
The month brings about 160 hours of sunlight, offering a comfortable mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, July, August, September and October typically offer the best weather for Vallejo.
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 Vallejo's climate page.
Vallejo Temperature in December
Min Temperature
4°C (39°F)
Max Temperature
14°C (57°F)
Chance of Rain
40%
Precipitation
101 mm (4 in)
Rainy days
12 days
Humidity
78% *
Sunshine
160 hours *
Percentage Sunshine
54% *
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
pleasant
tolerable
unpleasant
poor
What to Wear in Vallejo in December
The weather can be unpredictable in December, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Vallejo 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 Vallejo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Vallejo climate overview or explore weather in the United States of America.
