"Meteorological winter" is a phrase used to describe the coldest months of the year. It is a period that runs from December to February, when the weather is typically colder, and there may be more snow or storms. Full definition
That date is the start of meteorological winter — the three coldest months of the year in the Northern Hemisphere, a period that ends on Feb. 28. (rismedia.com)
Albany, New York and Burlington, Vermont had their highest temperatures ever recorded during meteorological winter with highs of 72 degrees F (22 degrees C) and 68 degrees F (20 degrees C), respectively, on December 24. (ncdc.noaa.gov)
According to NOAA's Climate Prediction Center, much of the U.S. will have temperatures above normal for the rest of the month, so expect more records to fall before meteorological winter starts on Dec. 1. (wxshift.com)