Across the Great Lakes and Ontario, overnight totals remain mostly under 10 cm with no region hitting the 10 cm+ threshold. Blizzard or freezing rain risks are not evident, so widespread school closures or bus cancellations aren’t anticipated. A few pockets of light to moderate snow with breezy 20–50 km/h winds may create slick spots on side streets, especially early in the morning. In Ontario, Sturgeon Falls with 7.3 cm and a 45 km/h wind could bring a few slick patches to start, so get the kids ready a bit earlier and plan for a cautious morning commute. Most areas should run on time, but tune in to local alerts for any sudden changes and watch for isolated lake-effect flurries in northern spots.
Stop relying on outdated “magic number” calculators. Snow Day Predictor is the 2026 standard for school closing probabilities, built on the same ultra-high-resolution weather engine that powers the world’s most popular smartphones.
While other sites give you a generic percentage based on total snowfall, we analyze hour-by-hour atmospheric changes to tell you exactly when the roads will become impassable.
Most snow day calculators use global models that only update every 6 to 12 hours. In a fast-moving winter storm, that data is obsolete before you even wake up. Our system leverages ultra-precision hourly data to track the “Morning Crunch”—the critical window between 4:00 AM and 7:00 AM that determines whether a superintendent calls for a closure or a delay.