The National Oceanic and Atmospheric Administration (NOAA) is calling for a warmer than normal winter in much of the Eastern coast of the US.
La Niña is the opposite of an El Niño weather pattern which happens when the surface waters of the Pacific Ocean are unusually cold, causing the air above to be quite dry. That cool air sinks and prompts the polar jet stream to dip downwards over the U.S., bringing that blast of chill to northern areas.
This pattern disrupts the Pacific jet stream, which would normally cool down the south and the east.
The cold weather in the Northeast is going to continue through Thanksgiving due to the Greenland block, but that should be it.
If you’re still holding out hope for brisk weather, your best bet will be in January. Stephen Baxter, a meteorologist at NOAA’s Climate Prediction Center, says it’s still speculative, but that the data suggest January will be the coldest of the winter months given our current climate.