Wellesley School District Snow Day Predictor
The odds of a closing or a delay on the next three school mornings in Wellesley, measured against Wellesley's own big snow morning of 5.8 inches.
Will Wellesley close tomorrow?
Wellesley’s snow record
- Biggest day 14 in on March 4, 2019
- Snowiest winter 2025 to 2026, 48.2 in
- 6 in mornings 0.8 a winter
- 1 in mornings 4 a winter
Measured at a NOAA weather station 6.5 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 Wellesley
| District | Snow a winter | 4 in mornings | Built in days |
|---|---|---|---|
| Needham School DistrictNeedham | 34.3 in | 1.5 | 5 |
| Natick School DistrictNatick | 41.3 in | 1.8 | 5 |
| Weston School DistrictWeston | 26.2 in | 1.4 | |
| Wayland School DistrictWayland | 45 in | 2.1 | |
| Newton School DistrictNewtonville | 26.2 in | 1.4 | 5 |
| Dover-Sherborn School DistrictDover | 43.4 in | 1.9 |
10 schools
Every school in Wellesley follows the district’s call: one closing covers them all.
High
- Wellesley Sr High
Middle
- Wellesley Middle
Elementary
- Joseph E Fiske
- Schofield
- Sprague Elementary School
- Katharine Lee Bates
- John D Hardy
- Hunnewell
- Ernest F Upham
Other schools
- Preschool at Wellesley Schools
Wellesley 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.