Currently in Boston — December 20th, 2022

The weather, currently.

Dry and seasonable weather continues.

Clear skies at night and sunny skies will continue through Wednesday. It will be in the 20s when you get up in the morning, rising to around 40°F in the afternoon. Winds will not be as strong Tuesday or Wednesday.

A storm, which will bring blizzard conditions across the Upper Great Lakes and into the Ohio Valley later this week, will eventually bring clouds and a warm rainstorm to New England Thursday night and Friday. Temperatures Thursday will reach into the 40s and with the rain and wind, they will be in the 50s Friday. Dry and cold weather resumes for Christmas Eve and Christmas Day. This will be the coldest Christmas since 2013.

Dave Epstein

What you need to know, currently.

A La Niña advisory is in effect, and it is expected to continue into the winter. The climate pattern also has a 50-50 chance of continuing into early 2023 as well.

Earth had one of the hottest summers on record this year. This is peculiar because the climate pattern across the tropical Pacific, or El Niño Southern Oscillation (ENSO), was in its cool phase, aka La Niña. During this phase, the Pacific’s waters are far cooler than normal, and changes global weather patterns.

In the winter months, La Niña can cause colder and stormier than average conditions across the North, and warmer, less stormier conditions in the South. Essentially, La Niña keeps global temperatures under control, despite extreme weather events, such as heatwaves, floods, wildfires, and droughts. In other words, La Niña stops these events from transforming into their worst form.

If La Niña continues into early 2023, the weather pattern will be one of the longest on record, as it began in spring 2020.

—Aarohi Sheth

What you can do, currently.