Napa Weather in December
Napa in December sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 4°C (39°F). Rainfall is at its peak this month, around 120 mm (4.7 in) on average, so waterproofs are essential.
Rainfall in Napa in December
Since this is the rainiest month of the year, it's a good idea to carry an umbrella just in case. This month experiences about 11 days of rain according to historical data, averaging 120 mm (4.7 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Napa in December
Daytime temperatures in Napa reach 14°C (57°F) in December, dropping to 4°C (39°F) at night. The month of December belongs to the winter season. Conditions are often most pleasant around the middle of the day. Nights drop to 4°C (39°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. December often features the most temperate temperatures compared to other months.
Sunshine in Napa in December
You can expect a moderate amount of sunlight, with approximately 160 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, June, July, August and October typically offer the best weather for Napa.
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 Napa's climate page.
Napa Temperature in December
Min Temperature
4°C (39°F)
Max Temperature
14°C (57°F)
Chance of Rain
37%
Precipitation
120 mm (4.7 in)
Rainy days
11 days
Sunshine
160 hours *
Percentage Sunshine
55% *
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 Napa 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 Napa 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 Napa's climate page.
See the full Napa climate overview or explore weather in the United States of America.
