August weather forecast
Sylmar, CA

Weather in August

August, the last month of the summer in Sylmar, is also a moderately hot month, with an average temperature varying between 64.9°F (18.3°C) and 85.8°F (29.9°C).

Temperature

With an average high-temperature of 85.8°F (29.9°C) and an average low-temperature of 64.9°F (18.3°C), August is the warmest month.

Heat index

In August, the average heat index is calculated to be a hot 87.8°F (31°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, wind), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August in Sylmar is 51%.

Rainfall

In Sylmar, during August, the rain falls for 1.2 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, in Sylmar, there are 39.8 rainfall days, and 7.52" (191mm) of precipitation is accumulated.

Daylight

The average length of the day in August is 13h and 23min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:55 pm. On the last day of August, in Sylmar, sunrise is at 6:26 am and sunset at 7:21 pm PDT.

Sunshine

In Sylmar, California, the average sunshine in August is 12h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Sylmar. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the warmest month in Sylmar?

With an average high-temperature of 85.8°F (29.9°C) and an average low-temperature of 64.9°F (18.3°C), August is the warmest month.

What is the temperature in August in Sylmar?

In Sylmar, California, in August, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 64.9°F (18.3°C). in August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in August in Sylmar?

The average relative humidity in August is 51%.

How many days does it rain in August in Sylmar?

In Sylmar, California, during August, the rain falls for 1.2 days and regularly aggregates up to 0.08" (2mm) of precipitation.

How many hours of daylight does Sylmar have in August?

In Sylmar, the average day length in August is 13h and 23min.

What time are sunrise and sunset in August in Sylmar?

On the first day of August, sunrise is at 6:04 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:21 pm PDT.

How long on average sun shines in August in Sylmar?

In August, the average sunshine duration in Sylmar is 12h.

What are the months with the highest UV index in Sylmar?

The months with the highest UV index in Sylmar, California, are June through September, with an average maximum UV index of 6.

What is the UV index reading in August in Sylmar?

In Sylmar, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Sylmar, CA

Average temperature in August - Sylmar, CA
  • Average high temperature in August: 85.8°F

The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).

[Resources]

Average pressure in August
Sylmar, CA

Average pressure in August - Sylmar, CA
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

[Resources]

Average wind speed in August
Sylmar, CA

Average wind speed in August - Sylmar, CA
  • Average wind speed in August: 4.7mph

The windiest months (with the highest average wind speed) are January and December (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

[Resources]

Average humidity in August
Sylmar, CA

Average humidity in August - Sylmar, CA
  • Average humidity in August: 51%

The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (47%).

[Resources]

Average rainfall in August
Sylmar, CA

Average rainfall in August - Sylmar, CA
  • Average rainfall in August: 0.08"

The wettest month (with the highest rainfall) is February (1.54").
The driest month (with the least rainfall) is June (0").

[Resources]

Average rainfall days in August
Sylmar, CA

Average rainfall days in August - Sylmar, CA
  • Average rainfall days in August: 1.2 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).

[Resources]

Average daylight in August /
Average sunshine in August
Sylmar, CA

Average daylight in August / Average sunshine in August - Sylmar, CA
  • Average daylight in August: 13h and 23min

The month with the longest days is June (Average daylight: 14h and 25min).
The month with the shortest days is December (Average daylight: 9h and 55min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

[Resources]

Average sunshine days in August
Sylmar, CA

Average sunshine days in August - Sylmar, CA
  • Average sunshine days in August: 28.7 days

The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is February (22.9 days).

[Resources]

Average UV index in August
Sylmar, CA

Average UV index in August - Sylmar, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

[Resources]

Average cloud cover in August
Sylmar, CA

Average cloud cover in August - Sylmar, CA
  • Average cloud cover in August: 4

The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).

[Resources]

Average visibility in August
Sylmar, CA

Average visibility in August - Sylmar, CA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location