The climate in New York City is changing -- getting warmer throughout the year, even in winter.
The National Climatic Data Center has released a new dataset for the current "normal" period, spanning the 30 years from 1991-2020. Compared to the last normal period of 1981-2010, there are some changes in the city.
Average temperatures are up, not just against the last period but against the 20th Century as a whole. The change is relatively slight in months like March and November, but quite pronounced in December and to a lesser extent September.
Watch the video above for a detailed explanation from Storm Team 4 Chief Meteorologist Janice Huff, or click through the slides below for more data.
Get Tri-state area news and weather forecasts to your inbox. Sign up for NBC New York newsletters.