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Sylmar (CA) Weather and Climate: A Comprehensive Guide

The temperature in Sylmar can vary greatly throughout the year. The temperatures shift from very warm to mild. The city tends toward drier weather patterns. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

Depending on the time of the year, temperatures range from very warm to moderate in Sylmar. Average daytime temperatures reach a very warm 33°C in August. In December, the coolest month of the year, temperatures drop to a moderate 17°C.

At night, you can expect cooler temperatures, with averages dropping to around 7°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Sylmar maintains relatively dry conditions year-round, recording average annual precipitation of 323 mm. Sylmar can be quite wet during December, receiving approximately 68 mm of precipitation over 9 rainy days.

In contrast August, experiences much drier conditions, with 0.3 mm of rainfall, spread across 0 rainy days. For more details, please visit our Sylmar Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Sylmar can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 12.1 hours of sunshine daily. In contrast, the city experiences much darker days in November, with only 7.2 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

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

Daily hours of sunshine

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

Forecast for Sylmar (CA)

Fri   Dec 27
18°C | 9°C
SE 2 m/s
partly cloudy and no rain

partly cloudy and no rain

Sat   Dec 28
22°C | 8°C
SW 2 m/s
broken clouds and no rain

broken clouds and no rain

Sun   Dec 29
20°C | 8°C
S 2 m/s
clear and no rain

clear and no rain

The best time of year to visit Sylmar in the United States of America

During the months of March, April, May and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Sylmar have a dry season?
    Yes, the months of May, June, July, August, September and October are very dry.
  • Which is the warmest month in Sylmar?
    August has an average maximum temperature of 33°C and is the warmest month of the year.
  • Which is the coldest month in Sylmar?
    The coldest month is December with an average maximum temperature of 17°C.
  • Which is the wettest month in Sylmar?
    December tops the wettest month list with 68 mm of rainfall.
  • Which is the driest month in Sylmar?
    August is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Sylmar?
    July is the sunniest month with an average of 364 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.