Will School Be Closed in Chicago, Illinois?
Real-time probability that schools in Chicago, Illinois will be cancelled tomorrow, based on live forecast data and local closure thresholds.
It's 69°F — no snow day expected.
Local Snow Day Guide
Chicago, Illinois — Snow Day Facts
Historical patterns, infrastructure data, and what actually triggers school closures in Chicago.
13
Snow Days / Year
37"
Avg Annual Snow
4:00 AM – 5:00 AM
Decision Time
Infrastructure
Typical Closure Threshold: 6–12 inches
CPS serves 330,000 students across 600+ schools. Chicago's street and sanitation department operates one of the largest urban snow removal fleets in the US. The CEO of CPS makes the closure decision, balancing school bus route safety with the impact on working families who depend on schools for childcare.
Historical School Closure Patterns
Chicago Public Schools have a high tolerance for snow — the 2019 polar vortex event closed schools due to -50°F wind chills rather than snow accumulation. CPS typically closes 2–4 times per year, and often only for extreme events. The famous 1967 blizzard (23 inches) and 2011 blizzard (21 inches) caused extended multi-day closures.
How Chicago Makes the Decision
Chicago often opts for 2-hour delayed starts rather than full closures, allowing morning road clearing. Cold day closures (wind chill-based) are more common than snow day closures. Announcements go out via the CPS family portal and major TV/radio stations by 5:30 AM.
Chicago Snow Day Facts
- Chicago averages 37 inches of snowfall per year
- The city operates 280+ snow plows covering 9,400 lane-miles
- Wind chill below -20°F is a standalone closure trigger
- Lake-effect snow from Lake Michigan can cause localized heavy accumulation on the North and South sides
- Chicago uses GPS tracking on all snow plows — residents can track clearing progress at chicagoworks.com
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Why schools in Chicago close when they do
This page goes deeper on the local thresholds, official district sources, recent winter events, and the nearby cities that make a different call.
Local threshold
6–12 inches
CPS serves 330,000 students across 600+ schools. Chicago's street and sanitation department operates one of the largest urban snow removal fleets in the US. The CEO of CPS makes the closure decision, balancing school bus route safety with the impact on working families who depend on schools for childcare.
Official districts
Forecast pages and district websites
Chicago Public Schools
322,000 students · city
Nearby city contrast
Why nearby places may decide differently
Chicago can wait longer on borderline calls than Cicero
Chicago runs a much larger urban operation, so transit dependencies, staffing, and the downstream cost of closure all push decision-makers to hold off unless the forecast clearly threatens the morning commute.
Chicago can wait longer on borderline calls than Evanston
Chicago runs a much larger urban operation, so transit dependencies, staffing, and the downstream cost of closure all push decision-makers to hold off unless the forecast clearly threatens the morning commute.
Chicago can wait longer on borderline calls than Hammond
Chicago runs a much larger urban operation, so transit dependencies, staffing, and the downstream cost of closure all push decision-makers to hold off unless the forecast clearly threatens the morning commute.
Chicago, Illinois school district
Per-district snow day probability
Nearby cities
Live forecasts within driving distance of Chicago
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