Commack Union Free School District Snow Day Predictor
The odds of a closing or a delay on the next three school mornings in Commack, measured against Commack's own big snow morning of 5 inches.
Will Commack close tomorrow?
Commack’s snow record
- Biggest day 11.5 in on January 29, 2022
- Snowiest winter 2017 to 2018, 39 in
- 6 in mornings 0.3 a winter
- 1 in mornings 3.1 a winter
Measured at a NOAA weather station 4.4 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 New York counts a lost day
New York requires 180 days of session plus 900 hours a year for kindergarten to grade 6 and 990 hours for grades 7 to 12. The Commissioner can excuse up to 5 days closed for extraordinary weather, but only if the district cannot make them up by using all its scheduled vacation days before the June Regents exams.
The New York rules in the agency’s own words, and every New York district
Districts near Commack
| District | Snow a winter | 4 in mornings | Built in days |
|---|---|---|---|
| Elwood Union Free School DistrictGreenlawn | 26.6 in | 1.6 | |
| Kings Park Central School DistrictKings Park | 19.2 in | 0.9 | |
| Northport-East Northport Union Free School DistrictNorthport | 19.2 in | 0.9 | |
| Harborfields Central School DistrictGreenlawn | 26.6 in | 1.6 | |
| Smithtown Central School DistrictSmithtown | 28.5 in | 1.3 | 3 |
| Half Hollow Hills Central School DistrictDix Hills | 26.6 in | 1.6 |
8 schools
Every school in Commack follows the district’s call: one closing covers them all.
High
- Commack High School, Commack
Middle
- Commack Middle School, Commack
Elementary
- Burr Intermediate School, Commack
- Sawmill Intermediate School, Commack
- North Ridge School, Commack
- Wood Park School, Commack
- Indian Hollow School, Commack
- Rolling Hills School, Dix Hills
Commack snow day questions
More for New York snow days

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