Sylmar Weather in December

December in Sylmar typically sees daytime highs of 17°C (63°F) and nighttime lows of 7°C (45°F). As the wettest month of the year, expect more rainfall than other months. It falls within the winter season.

Rainfall in Sylmar in December

This month is known for heavy rainfall, so don't forget your umbrella to stay dry. Records from the past 30 years suggest around 9 days of rain, with 68 mm (2.7 in) average 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 Sylmar in December

December in Sylmar brings typical temperatures with highs around 17°C (63°F) and lows of 7°C (45°F). December is typically considered a winter month. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Enjoy a month of mild temperatures, still offering warmth and comfort throughout.

Sunshine in Sylmar in December

The month enjoys around 220 hours of sunshine, creating mostly sunny days with good weather conditions.

December in Sylmar has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.