Ottawa, ON Snow Day Calculator
Check if school will be cancelled in Ottawa tomorrow.
Predictions are estimates based on weather forecasts. Always confirm with your school district's official announcements.
Check if school will be cancelled in Ottawa tomorrow.
Predictions are estimates based on weather forecasts. Always confirm with your school district's official announcements.
Ranges from lake-effect snow belts near the Great Lakes to cold continental conditions in the north. Ontario averages about 150 cm of snow per year, making Ottawa no stranger to winter storms and school closures.
Ontario school boards make independent closure decisions. Northern boards have higher thresholds than southern Ontario. Toronto rarely closes, while Ottawa, Sudbury, and Thunder Bay close more frequently for heavy snow and extreme cold.
Enter your school type above for a prediction tailored to Ottawa-area districts. For the most accurate result, check back the evening before a potential snow day.
Our calculator pulls real-time weather forecast data for the Ottawa, Ontario area and analyzes several factors that influence school closure decisions: expected snowfall accumulation and intensity, ice and freezing rain probability, wind chill and air temperature, timing of the storm relative to the morning commute, forecast confidence, and overall road condition forecasts. In addition to closure probability, we also predict the chance of a 2-hour delay and early dismissal.
Different school types have different closure thresholds. Public schools in the Ottawa area typically follow district-wide decisions that account for bus route safety across a wide geographic area. Private and charter schools often make independent decisions and may close at slightly lower thresholds. Colleges and universities rarely cancel classes for snow unless conditions are severe, and typically do not issue 2-hour delays.
For the best results, check the calculator after 6 PM the evening before a potential snow day. Weather models are most accurate within a 12 to 24 hour window, and most school districts make their closure announcements between 5 AM and 6 AM the morning of the event. Our prediction reflects the latest available forecast data each time you load the page.