How school districts decide snow days
The decision usually belongs to one person, often made before 6 AM, with roads, buses and the forecast on the table.
By Petar M., editor · Updated October 17, 2026 · How we research
In this guide (7)
Who makes the call
In most U.S. districts the superintendent decides, on the advice of the transportation director and facilities staff. Larger districts have a written weather procedure; smaller ones rely on experience. State education departments generally leave the decision to each district, which is why two districts on the same road can make different calls.
What they look at
- The forecast, especially what will be falling between about 5 and 8 AM, and any National Weather Service warning.
- The roads. Staff often drive bus routes in the early morning, checking back roads, hills and bridges, not just main streets.
- Plowing and salting: whether city, county and state crews can clear the routes in time.
- Buildings: power, heat, parking lots and sidewalks.
- Cold: the wind chill children face at the bus stop.
- Neighboring districts: many coordinate, especially where buses or staff cross district lines.
Closure, delay or open?
A delay buys time: crews get two more hours to clear roads, and daylight helps. Districts tend to delay when snow ends overnight or the roads are expected to improve by mid-morning, and close when snow or ice will still be falling at bus time, when ice is involved, or when cold is extreme. Early dismissal is used when a storm arrives during the school day. See snow day vs. delay vs. early dismissal.
When the decision comes
Usually early in the morning, so families can be told before buses leave. When a big storm is certain, many districts announce the evening before. Announcements go out on district websites, text and phone alerts, social media and local TV and radio.
Why your district closed and the next one didn't
- Geography: hills, rural roads and long bus routes are harder to clear than a city grid.
- Different snow: a few miles can mean a lot more snow, especially in lake-effect bands.
- Different policies and calendars: some districts have make-up days left; others have used them up or can switch to remote learning.
- Different people: in the end, it is a judgment call.
District snow day calculators
Tomorrow's chance for some of the largest districts that get snow:
- NYC Public Schools (NYC DOE) (NY)
- Denver Public Schools (CO)
- Boston Public Schools (MA)
- Chicago Public Schools (IL)
- Ann Arbor Public Schools (MI)
- Jeffco Public Schools (CO)
- Detroit Public Schools (MI)
- Milwaukee Public Schools (WI)
- Minneapolis Public Schools (MN)
- Saint Paul Public Schools (MN)
- Buffalo Public Schools (NY)
- Rochester City School District (NY)
How the calculator models this
We can't see the roads or the superintendent's calendar. What we can measure is the forecast at bus time, ice, wind chill and NWS warnings, compared with your area's normal winter. That gives a chance, not an answer. See how it works.
Check your district
See tomorrow's chance of a closure or delay for your ZIP code. Open the calculator, or find your state or city.