California Weather in December
December in California brings low temperatures, with highs of 6°C (43°F) and nights dropping to -4°C (25°F). Rainfall is on the higher side this month, averaging around 81 mm (3.2 in), so keep a rain jacket handy.
Rainfall in California in December
You can expect snow/rain on around 9 days based on historical patterns, with 81 mm (3.2 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in California in December
In December, expect low temperatures in California, with highs of 6°C (43°F) and lows of -4°C (25°F) at night. This month falls in the winter season. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. With lows of -4°C (25°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.
Sunshine in California in December
The area experiences a moderate amount of sunshine, with approximately 142 hours of sunlight expected. This means a decent mix of sun and overcast.December in California has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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 California's climate page.
California Temperature in December
Min Temperature
-4°C (25°F)
Max Temperature
6°C (43°F)
Chance of Rain
30%
Precipitation
81 mm (3.2 in)
Rainy days
9 days
Humidity
73% *
Sunshine
142 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
pleasant
tolerable
unpleasant
poor
What to Wear in California in December
We recommend to layer up for chilly conditions in California in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in California 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 California's climate page.
Temperature Rainfall Sunshine Humidity
See the full California climate overview or explore weather in the United States of America.
