Chelsea School District Snow Day Predictor
The odds of a closing or a delay on the next three school mornings in Chelsea, measured against Chelsea's own big snow morning of 4.8 inches.
Will Chelsea close tomorrow?
How Chelsea calls a snow day
When the call comes
Before 6:30 AM if at all possible, and by 7:00 AM at the latest.
“The announcement will be made before 6:30 AM if at all possible. In some cases, for example unpredictable weather, it may not be possible to make a decision until later in the morning. In any event, the announcement will be made by 7:00 AM at the latest.”Source
How families hear
By local TV, the district website, social media, phone call and text message.
“The following mediums will announce no-school days: WBZ Television, Ch. 4 WCVB Television, Ch. 5 WHDH Television, Ch. 7 WFXT Boston (Fox 25 News) Chelsea Community Cable, Ch. 3 CPS Website Facebook Page Twitter/X Account ParentSquare Phone & Text Alerts”Inclement Weather Information
Making up a lost day
Added to the end of the year, from Day 180 on June 15 up to Day 185 on June 23.
“15 Day 180-Potential Last day for all ... 23 Day 185-(Snow Days)”Source
The 2026 to 2027 calendar
- First day August 26, 2026
- Winter break Dec 23 to Jan 1
- February break Feb 15 to Feb 19
- Last day June 15, 2027
Read from Chelsea’s own pages on October 8, 2026; the district site is chelseaschools.com.
Chelsea’s snow record
- Biggest day 23.6 in on January 29, 2022
- Snowiest winter 2025 to 2026, 62.8 in
- 6 in mornings 1 a winter
- 1 in mornings 4.9 a winter
Measured at a NOAA weather station 2.6 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 Chelsea
| District | Snow a winter | 4 in mornings | Built in days |
|---|---|---|---|
| Everett School DistrictEverett | 35.6 in | 1.3 | 5 |
| Revere School DistrictRevere | 35.6 in | 1.3 | 5 |
| Winthrop School DistrictWinthrop | 35.6 in | 1.3 | |
| Malden School DistrictMalden | 28.2 in | 1.5 | 5 |
| Cambridge School DistrictCambridge | 34.4 in | 1.8 | 5 |
| Saugus School DistrictSaugus | 28.2 in | 1.5 |
11 schools
Every school in Chelsea follows the district’s call: one closing covers them all.
High
- Chelsea High
- Chelsea Opportunity Academy
- Chelsea Virtual Learning Academy
Middle
- Clark Avenue School
- Joseph A. Browne School
- Eugene Wright Science and Technology Academy
Elementary
- Frank M Sokolowski Elementary
- George F. Kelly Elementary
- Edgar A Hooks Elementary
- William A Berkowitz Elementary
Other schools
- Shurtleff Early Childhood
Chelsea 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.