Massachusetts Snow Day Calculator

The calculator above is preset for Massachusetts. Boston (Logan) averages 49.2 inches of snow a year (1991–2020 normals), which puts Massachusetts in our heavy-snow group. For a public school in an average suburban district, the model needs about 10 inches of overnight snow before the chance of a closure reaches 50%. Enter your ZIP code to load the National Weather Service forecast, or change the snow tolerance if your town gets much more or less snow than Boston (Logan).

Massachusetts snow day facts at a glance

How much snow closes school in Massachusetts? (model estimate)

Computed with the calculator’s formula for a heavy-snow area: public school, average district, no ice, no extreme cold, no timing boost.

Ice changes the picture quickly: in the model, 0.1 inch of freezing rain alone gives about 23% closure odds here, and 0.25 inch about 82%. A morning wind chill of -30°F gives 50% from cold alone. Heavy snow between midnight and 6 a.m. counts 25% more, because it is still falling when districts decide around 4–6 a.m.

Reported thresholds and cold-day policies in Massachusetts

These come from our snow day thresholds dataset. Most are news reports, so they describe policy as reported at the time, not necessarily today.

• Boston Public Schools — Snow: Closed Jan 7 2022 for forecast of several inches with ~1 in/hr rates 5-8 a.m. (news; source↗; Timing during commute + bus driver shortage cited by Mayor Wu)
• Massachusetts (statewide study 2003-2010) — Snow: Each day with 10+ inches -> 0.51 additional closings; each 4-10 inch day -> only 0.04 closings (but 0.08 absences). (academic; source↗; Goodman, Education Next Summer 2015; NBER WP 20221)

Remote learning days in Massachusetts

We have not verified Massachusetts’s rule on remote learning days for weather, so the calculator does not estimate a remote-day chance here. Your district calendar or handbook will say whether it uses remote or e-learning days.

Minimum school year in Massachusetts

The Education Commission of the States’ 2023 comparison lists these minimums for Massachusetts (they may not reflect later legislation):

• Days: 180
• Instructional hours: K: 425 h; 1-5: 900 h; 6-12: 990 h

Days lost to closures count against that minimum, which is why districts that use up their snow days typically add make-up days at the end of the year — and why remote-day rules matter.

Where to check official closures

Only your district can close school. Check its website, app or text and email alerts first. We don’t list district links for Massachusetts because we haven’t verified them; this page and its calculator are an estimate, not an announcement.