Boston Winter Outlook 2026-27: What NOAA’s El Niño Forecast Means for Snow

Will Boston get a snowy winter in 2026-27? NOAA’s official U.S. Winter Outlook, released October 15, leans toward a warmer-than-average and wetter-than-average winter along the East Coast, driven by what forecasters call a very strong El Niño. That combination does not settle the snow question, and NOAA says so plainly: its seasonal outlook “does not project seasonal snowfall accumulations.” Here is what the government forecast does and does not say for Boston, and what a normal Boston winter looks like.

What NOAA’s winter outlook says for Boston

The outlook covers December 2026 through February 2027. For temperature, NOAA favors warmer-than-average conditions across “much of the East,” along with the Midwest, the Mississippi Valley, the Pacific Northwest and Alaska. For precipitation, it says wetter-than-average conditions are most likely across the southern tier of the country and “along the East Coast.” NOAA also expects drought to improve or end in parts of the East Coast through January.

“A very strong El Nino will likely bring a southward and eastward shift to the jet stream for the contiguous U.S., which tilts the odds toward stormier weather across the South,” said Ken Graham, director of NOAA’s National Weather Service.

The El Niño behind the forecast

In its October 15 technical discussion, NOAA’s Climate Prediction Center said the El Niño “continues to strengthen” and that an El Niño advisory is favored to remain in effect through spring 2027. The center reported weekly sea surface temperatures in the key Niño 3.4 region of the Pacific running 2.4 degrees Celsius above normal, and said there is “considerable remaining fuel” for further strengthening. Its separate November-to-January outlook favors above-normal temperatures for the mid-Atlantic and the northern tier of the country and above-normal precipitation along the eastern seaboard.

The Climate Prediction Center’s outlooks are probabilities, not guarantees: they shift the odds toward warmer or wetter conditions compared with the 1991-2020 average, and any single storm can still bring heavy snow.

What a normal Boston winter looks like

Federal climate normals for Boston, measured at Logan International Airport for 1991 to 2020, put average seasonal snowfall at 49.2 inches, according to the National Weather Service in Norton. Measured by month, that breaks down roughly as follows:

Most of Boston’s snow typically falls in January and February, so a warm start to the season does not rule out a snowy finish. The airport’s record low for the season is minus 18 degrees, set in February.

When does Boston usually get its first snow?

The Weather Channel, using National Weather Service 30-year averages, lists November 29 as the average date of Boston’s first measurable snow, 0.1 inch or more, and October 10, 1979, as the earliest on record. Much of the I-95 corridor from Providence south typically waits until December.

How to stay ready

• NOAA’s Weather Prediction Center updates its three-month outlook monthly; the next update is due November 19.
• This winter the National Weather Service will start using “Particularly Dangerous Situation” wording in some Blizzard Warnings and Ice Storm Warnings for rare, historic-severity storms.
• The weather service’s new Probabilistic Precipitation Portal shows low-end, expected and high-end snow and ice amounts before a storm.
• Bookmark our guide to the end of daylight saving time, which brings earlier sunsets on November 1, and the weekend events roundup while the weather holds.

Sources

• NOAA: El Nino looms large over U.S. Winter Outlook (Oct. 15, 2026): temperature, precipitation and drought outlooks, Graham quote, new NWS tools and the Nov. 19 update.
• NOAA Climate Prediction Center: Prognostic Discussion for Long-Lead Seasonal Outlooks: El Niño strength, sea surface temperatures and the November-January outlook.
• National Weather Service Boston/Norton: Boston seasonal climate summary: 49.2-inch seasonal snowfall normal, 1991-2020.

Additional sources

• NOAA climate normals via Wikipedia: Boston (Logan Airport) climate data: monthly snowfall, average highs and record low.
• The Weather Channel: When the First Snow of the Season Typically Falls: Boston’s average and earliest first snow.
• Wikimedia Commons: Boston Common in the Winter: photo license and credit.