El Niño is here: What you need to know El Niño is here: What you need to know https://www.accuweather.com/en/weather-news/el-nino-is-here-what-you-need-to-know/70007448 El Niño has officially arrived.  Bad news for the West Coast which is already getting drenched, good news for most of the rest of the nation who will start to experience mild temperatures.