Wilmington, Massachusetts, 2,760 students in 7 schools

Wilmington School District Snow Day Predictor

Q: How much snow does Wilmington get?

About 44.2 inches a winter at a NOAA weather station 2 miles away, averaged over 7 winters. Between December 1 and March 31 that brings 5.1 weekday mornings a year with 2 inches of new snow or more, and 2.1 with 4 inches or more.

Q: What was the biggest snow day near Wilmington?

18.3 inches on February 2, 2021, the largest single day at a NOAA weather station 2 miles away in 7 winters. The snowiest winter was 2025 to 2026, with 63.1 inches.

Q: Does Wilmington get more snow days than other Massachusetts districts?

Wilmington averages 2.1 weekday mornings a winter with 4 inches of new snow or more, more than 56 percent of the 291 Massachusetts districts with a station record.

Q: How does the Wilmington snow day predictor work?

It reads the National Weather Service forecast for Wilmington through the night and the 5 to 8 am bus run, adds winter alerts and the Winter Storm Severity Index, and measures the snow against Wilmington’s own big snow morning: 5.2 inches, the top tenth of snowy weekday mornings at a NOAA weather station 2 miles away.

The odds of a closing or a delay on the next three school mornings in Wilmington, measured against Wilmington's own big snow morning of 5.2 inches.

The next three school mornings

Will Wilmington close tomorrow?

Reading the National Weather Service forecast for the overnight and the bus hours in Wilmington.

Ten winters of school mornings

Wilmington’s snow record

44.2inches of snow a winter

5.1school mornings a winter with 2 in of new snow or more

2.1with 4 in or more

5.2 ina big snow morning in Wilmington: the top tenth of snowy school mornings

More 4 inch school mornings than 56% of the 291 Massachusetts districts with a station record.

0.1Nov

8.2Dec

16Jan

14.8Feb

3.6Mar

Average snowfall by month, inches

Biggest day 18.3 in on February 2, 2021
Snowiest winter 2025 to 2026, 63.1 in
6 in mornings 1 a winter
1 in mornings 7.4 a winter

Measured at a NOAA weather station 2 miles away. Mornings are the 7 am snow reading on a weekday from December 1 through March 31, over the ten winters from 2016 to 2017 through 2025 to 2026, from NOAA GHCN Daily.

The Massachusetts rule

How Massachusetts counts a lost day

Massachusetts requires a 185 day calendar, at least 180 days actually held, and 900 hours for elementary or 990 hours for secondary students. Every day lost through March 31 is made up with full rescheduled days; after March 31, days are made up until 180 or the scheduled 185th day, whichever comes first.

The Massachusetts rules in the agency’s own words, and every Massachusetts district

Next door

Districts near Wilmington

District	Snow a winter	4 in mornings
Reading School DistrictReading	44.2 in	2.1
North Reading School DistrictNorth Reading	45 in	2.8
Burlington School DistrictBurlington	37.9 in	1.9
Tewksbury School DistrictTewksbury	44.2 in	2.1
Woburn School DistrictWoburn	37.5 in	1.8
Billerica School DistrictBillerica	44.2 in	2.1

The schools

7 schools

Every school in Wilmington follows the district’s call: one closing covers them all.

High

Wilmington High

Middle

Wilmington Middle School

Elementary

Woburn Street
Shawsheen Elementary
West Intermediate
North Intermediate

Other schools

Boutwell

Questions

Wilmington snow day questions

How much snow does Wilmington get?

What was the biggest snow day near Wilmington?

Does Wilmington get more snow days than other Massachusetts districts?

How does the Wilmington snow day predictor work?

How does Massachusetts handle snow days?

More winter

More for Massachusetts snow days

Snow day predictorClosing and delay odds for any ZIP, with the snowiest districts in the country.Snow depth mapHow much snow is on the ground right now, measured, across the country.First snow datesWhen the first measurable snow usually lands where you live.Frozen pipesThe nights cold enough to freeze a pipe, and what to do before one.Snow plow trackerWhere the plows are during a storm, city by city.Massachusetts winter forecastThe season ahead for Massachusetts: snowfall, cold and the first snow.

A residential street under deep snow on a bright blue morning, cars parked along the curb buried into smooth white mounds, one set of tire tracks down the middle — The morning after a big one: cars buried to the mirrors and one set of tracks down the middle. A street like this is a closing, no debate. Photo, Fairfax, Virginia, January 2016: Jarek Tuszyński, CC BY 4.0

The odds are a forecast read, and the superintendent makes the call: the district’s own announcement is the one to follow.