A new seasonal map reveals where colder-than-normal weather could break through an otherwise milder winter pattern.

"El Niño was the most important driver in the forecast for December-January-February," a federal meteorologist told Newsweek.

A new NOAA map shows where colder-than-normal weather is expected to break through before September ends, even as much of the United States stays unusually warm. The Climate Prediction Center’s latest ...