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.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Sylmar's climate page.

Sylmar Temperature in December

Min Temperature 7°C (45°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 29%  

Precipitation 68 mm (2.7 in)  

Rainy days 9 days  

Humidity 52% *  

Sunshine 220 hours *  

Percentage Sunshine 71% *  

* Data from: Los Angeles, the United States of America (41 KM, 26 Miles).

What to Wear in Sylmar in December

For Sylmar in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Sylmar in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Sylmar's climate page.

More climate data for Sylmar

Temperature Rainfall Sunshine Humidity

See the full Sylmar climate overview or explore weather in the United States of America.