Massachusetts Snow Day Predictor

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.

A shortened day still counts as one of the 180 days, but only the hours actually taught count toward the hour minimum.

All 291 in the state, by ZIP, with a page of their own for 211, including Boston, Worcester and Springfield. Every page carries the district’s own snow record and the odds for its next three school mornings.

A typical Massachusetts district sees about 3.9 weekday mornings a winter with 2 inches of new snow or more, and 1.9 with 4 inches or more, counted on weekdays from December 1 through March 31 at each district’s nearest NOAA weather station over ten winters. The snowiest districts in the table see several times that.

Three school mornings, as far as the National Weather Service hourly forecast reaches. Weekends and the district’s winter break are skipped, so a Friday storm is read for Monday’s buses.

It reads the National Weather Service forecast for your ZIP through the night and the bus hours, adds winter alerts and the Winter Storm Severity Index, and measures the snow against what counts as a big morning for your district. The state rules come from the Massachusetts Department of Elementary and Secondary Education and the state code.