Los Angeles Weather in December
The weather in December is usually the coldest all year for Los Angeles, California. But in reality, the day to day temperatures now feel pretty much the same as in the rest of winter. Throughout winter, Los Angeles enjoys mild weather.
This page gives detailed information on the typical December temperature, precipitation, sun, humidity, wind and storms for Los Angeles. The temperature, rainfall, sunshine and wind speed numbers here are historical averages based on climate data gathered in downtown Los Angeles near Union Station. The humidity and thunderstorm measurements are averages at the Los Angeles International Airport, located southwest of the city center.
|67 °F||December average high||20 °C|
|48 °F||December average low||9 °C|
December is the coldest month overall for Los Angeles and the 15th to 23rd are its chilliest days. They have daily highs averaging 67 degrees Fahrenheit (20 degrees Celsius) and the minimum averages 48 °F (9 °C).
|11 days||70 °F max. or more (21 °C)|
|20 days||50 °F min. or less (10 °C)|
Most days in December warm to over 60 °F (16 °C) in Los Angeles. Los Angeles averages two days in December when the thermometer reaches into the 80s °F (over 27 °C). Temperatures above 90 °F (32 °C) are not expected here this month.
The thermometer dips to 40 °F (4 °C) or below on an average of 1 night this month. But December does not normally get cold enough for frost.
|2.5 in||total precipitation||63 mm|
|6 days||of rain|
Half the time, Los Angeles receives 0.9 to 3.3 inches (22 to 84 mm) of rainfall in December. One in four years has drier weather, while another one in four is wetter.
|15 days||clear skies|
The sun's rays reach the ground in Los Angeles during 71 percent of daylight hours on average in December, for a total of 219 hours in the month. Typically on 15 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in December at Los Angeles averages 9 hours and 55 minutes a day. The shortest days of the year, from around December 17th to 24th, last 9 hours and 53 minutes from sunrise to sunset.
|63 %||December average humidity|
The relative humidity in Los Angeles during December usually peaks at 69 percent in the evening or morning then drops to 49 percent by early afternoon. This is the least humid month for Los Angeles.
|Local Time||1 am||4 am||7 am||10 am||1 pm||4 pm||7 pm||10 pm|
|4.9 mph||December wind speed average||7.9 kph|
December is an average month in Los Angeles for wind speed.
|2 days||rainfall of 0.5 inches (13 mm) or more|
|0 days||with thunderstorms in December|
Los Angeles has a December thunderstorm every few years.
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.