As an AI language model, I cannot go to a certain location and feel the temperature nor conduct empirical research. But here is what I can do for you.

Los Angeles, also known as LA, is renowned worldwide for its thriving entertainment industry, celebrities houses and golden sandy beaches. It’s important to note that the City of Angels can get cold; bearable or extreme at times depending on which part of LA one’s visiting.

LA falls under what we call “Mediterranean climate,” which means having mild and wet winters with warm to hot and dry summers. Although many people associate LA with year-round sunshine and great weather conditions, it experiences occasional cold weather throughout the year.

Many residents consider December through March as winter season months in Los Angeles during which temperatures can sharply drop; however, daytime temperatures are usually not too low even on the coldest days while nights tend to be colder. For instance, in December – January time frame daytime temperature typically ranges from 16°C-21°C (60°F-70°F), while night-time temperatures are between 6 °C –11 °C (40°F–50°F).

The upland areas such as Altadena/Sierra Madre range located north of Pasadena experience sub-freezing widespread frost during most winter mornings resulting in icy hazardous roadways unless treated by salt trucks.

The coastal city southward from Santa Monica Beach is milder compared with other parts of LA because it has a marine layer affecting precipitation pattern radiating cooling influence inland reducing maximum temperature averages. The region tends to have slight drizzles during this season averaging around six inches annually due to Santa Ana winds sweeping across chilly offshore waters before heading further southeast disintegrating over desert territories just beyond immediate urban sites.In these areas during winter season expect cool sea breezes often coming off Pacific Ocean making evenings somewhat uncomfortable without sufficient clothing when outdoors after sunset till early sunrise hours

While February-January tends to be the coldest months for LA, February can also experience some of its warmest days, with temperatures reaching as high as 25 °C (78°F). However, once the sun goes down or is behind a cloud cover in peak winter season throughout LA average low drops around 9-degree celsius(50°F) reaching lower contraction points at nights in mountainous regions like Big Bear/Lake Arrowhead which are located close to Los Angeles.

In contrast to above-mentioned geography, some even higher-elevation communities further northeast of where precipitation-transition climate zone ends have pronounced winters; occasionally resulting in several inches-deep snowfall amid below-freezing night time temperature readings making living conditions become uncomfortable and potentially dangerous along icy roads when wind-chill factors come into play bringing temperatures well-below what thermometer displays.

Overall it’s advisable to pack light jackets and an extra layer if you’re planning on spending extended periods outdoors during “winter” months in LA especially after sunset. In comparison to other North American cities such as New York or Chicago where one might need heavy coats and layers of warm clothing material for protection against sub-zero winds hitting directly onto human skin surface causing hypothermia symptoms, albeit colds or flu like feeling can set up without proper adequate insulation wherever global positioning systems reveal apparent freezing ambient temperatures reduction indicators.

One significant factor that impacts temperature change patterns over years is El-Nino episodes affecting California’s coastline from mid-winter into early spring seasons when ocean currents shift intense storms between Hawaii/Asia Pacific area resulting in unusual humidity brought by clouds unleashing havoc, flooding roadways disrupting power supplies & sometimes necessitating evacuations. Consequently bringing about mild spells alternating then cool swings combined with widespread disease outbreaks amongst citizens including diseases associated with poor sanitation/water supply infrastructures common mostly amongst impoverished groups dwelling near downtown areas of urban centers; hence recommended drinking boiled water rather than tap water housed inside their home utilities suggesting being cautious not to spread germs between people while out in public places avoiding crowds as much possible during epidemics.

Furthermore, there are slight variations of temperature’s severity depending on locations; for instance Big Bear/Lake Arrowhead can be several degrees cooler compared with central downtown LA owing to higher elevation differences apart from sea-level variance, which also translates into brighter blue sky hours daily. Other cities like Malibu or Santa Monica beaches tend to have milder temperatures around the same seasons largely because of ocean currents contributing a cooling effect without necessarily bringing about precipitation always making parking spaces along route #1 the Pacific coast highway congested often leading to traffic jams causing frustration amongst travelers but eventually ending up in tourist spots providing fascinating scenes for view-seekers visiting Los Angeles area.

In conclusion, as we’ve established, no matter what time of year you’re planning your visit here – even when it’s summer – still bring along some lightweight jackets and warm clothing materials just in case chilly winds abruptly blow now and then. Since weather patterns worldwide continuously undergo fluctuations due primarily human activities altering levels pollutants carbon dioxide emissions influencing global warming inevitably affecting atmospheric impacts’ stability worldwide.