This report describes the typical weather at the La Civic Center (Los Angeles, California, United States) weather station over the course of an average year. It is based on the historical records from 1999 to 2012. Earlier records are either unavailable or unreliable.
Los Angeles, California has a mediterranean climate with dry warm summers and mild winters. The area within 25 mi of this station is covered by built-up areas (47%), oceans and seas (22%), shrublands (17%), and forests (13%).
Over the course of a year, the temperature typically varies from 48Â°F to 83Â°F and is rarely below 43Â°F or above 91Â°F.
The warm season lasts from July 2 to September 25 with an average daily high temperature above 80Â°F. The hottest day of the year is August 27, with an average high of 83Â°F and low of 65Â°F.
The cold season lasts from November 29 to March 17 with an average daily high temperature below 69Â°F. The coldest day of the year is December 23, with an average low of 48Â°F and high of 66Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 9:54 hours of daylight; the longest day is June 20 with 14:26 hours of daylight.
The earliest sunrise is at 5:41am on June 10 and the latest sunset is at 8:09pm on July 1. The latest sunrise is at 7:15am on November 2 and the earliest sunset is at 4:43pm on December 4.
Daylight savings time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.
The median cloud cover ranges from 3% (clear) to 34% (mostly clear). The sky is cloudiest on June 1 and clearest on December 21. The clearer part of the year begins around July 19. The cloudier part of the year begins around May 3.
On December 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 62% of the time, and overcast or mostly cloudy 17% of the time.
On June 1, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 32% of the time, and clear or mostly clear 47% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around February 20, occurring in 23% of days. Precipitation is least likely around July 22, occurring in 1% of days.
Over the entire year, the most common forms of precipitation are light rain, heavy rain, and moderate rain.
Light rain is the most severe precipitation observed during 49% of those days with precipitation. It is most likely around March 5, when it is observed during 10% of all days.
Heavy rain is the most severe precipitation observed during 25% of those days with precipitation. It is most likely around January 24, when it is observed during 7% of all days.
Moderate rain is the most severe precipitation observed during 25% of those days with precipitation. It is most likely around February 20, when it is observed during 7% of all days.
During the warm season, which lasts from July 2 to September 25, there is a 2% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (80% of days with precipitation have at worst light rain) and heavy rain (12%).
During the cold season, which lasts from November 29 to March 17, there is a 20% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of light rain (42% of days with precipitation have at worst light rain), heavy rain (30%), and moderate rain (28%).
Either snow is exceptionally unlikely to fall at any time during the year at this location or this station does not reliably report precipitation types.
The relative humidity typically ranges from 31% (comfortable) to 87% (very humid) over the course of the year, rarely dropping below 12% (very dry) and reaching as high as 98% (very humid).
The air is driest around December 1, at which time the relative humidity drops below 43% (comfortable) three days out of four; it is most humid around August 2, exceeding 82% (humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a year, the dew point typically varies from 30Â°F (dry) to 63Â°F (mildy humid) and is rarely below 15Â°F (dry) or above 67Â°F (muggy).
The time of the year between March 12 and November 19 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of the year typical wind speeds vary from 0 mph to 8 mph (calm to gentle breeze), rarely exceeding 11 mph (gentle breeze).
The highest average wind speed of 3 mph (light air) occurs around April 11, at which time the average daily maximum wind speed is 8 mph (gentle breeze).
The lowest average wind speed of 1 mph (light air) occurs around November 22, at which time the average daily maximum wind speed is 6 mph (light breeze).