Millbury School District Snow Day Predictor
The odds of a closing or a delay on the next three school mornings in Millbury, measured against Millbury's own big snow morning of 4.8 inches.
Will Millbury close tomorrow?
Millbury’s snow record
More 4 inch school mornings than 56% of the 291 Massachusetts districts with a station record.
- Biggest day 15.7 in on January 26, 2026
- Snowiest winter 2017 to 2018, 70.3 in
- 6 in mornings 1.2 a winter
- 1 in mornings 7.1 a winter
Measured at a NOAA weather station 5.2 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.
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
Districts near Millbury
| District | Snow a winter | 4 in mornings | Built in days |
|---|---|---|---|
| Grafton School DistrictGrafton | 31.5 in | 1.6 | |
| Sutton School DistrictSutton | 31.5 in | 1.6 | |
| Worcester School DistrictWorcester | 61.1 in | 2.6 | |
| Auburn School DistrictAuburn | 45.7 in | 2.7 | |
| Shrewsbury School DistrictShrewsbury | 42.1 in | 2.3 | 5 |
| Oxford School DistrictOxford | 38.6 in | 2.1 |
3 schools
Every school in Millbury follows the district’s call: one closing covers them all.
High
- Millbury Junior/Senior High
Elementary
- Raymond E. Shaw Elementary
- Elmwood Street
Millbury snow day questions
More for Massachusetts snow days

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