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.