Most schools in the U.S. do not use one universal temperature to cancel; many start seriously considering closing when the wind chill is around −20∘-20^\circ −20∘F to −25∘-25^\circ −25∘F, because that’s when frostbite can develop quickly for kids waiting at bus stops. Policies vary by district and climate, so the exact “cancel school” temperature in your area can be higher or lower.

Typical cold-weather cutoffs

  • Many Midwestern districts mention closing or delaying when:
    • Wind chill is around −20∘-20^\circ −20∘F or lower.
* Some go colder, using about −30∘-30^\circ −30∘F to −35∘-35^\circ −35∘F wind chill as the point for automatic closure.
  • District guidelines often say they will close when either:
    • Actual air temperature is near −15∘-15^\circ −15∘F or lower, or
    • Wind chill is between −20∘-20^\circ −20∘F and −25∘-25^\circ −25∘F or colder during travel times.

Why it’s not one exact number

  • Safety concerns focus on:
    • Risk of frostbite and hypothermia for kids walking or waiting outside more than 10–30 minutes at very low wind chills.
* Road and sidewalk conditions; some schools close more for icy roads than for cold alone.
  • Local climate matters:
    • In very cold regions (like parts of Russia/Yakutia), school might not cancel until extreme cold such as around −55∘-55^\circ −55∘C.
* In milder regions, schools may react at warmer temperatures because students and buildings are less prepared for extreme cold.

How to find the answer for your school

  • Check:
    • Your district’s website or “inclement weather” page for written temperature and wind-chill guidelines. Many list ranges like “will close when wind chill is −20∘-20^\circ −20∘F to −25∘-25^\circ −25∘F.”
* Recent emails/texts from the superintendent, who often explains the exact criteria each winter.
  • If it’s dangerously cold but school is technically open, most districts allow parents to keep kids home for safety as long as the absence is reported.

Bottom line: there’s no single magic number, but in a lot of U.S. districts “what temp do they cancel school” usually means wind chills around −20∘-20^\circ −20∘F or lower, with road conditions and local norms also playing a big role.

Information gathered from public forums or data available on the internet and portrayed here.