Widespread snow continues across the central Great Lakes region with Northern New York and eastern Ontario seeing 10–15 cm in spots, including Petawawa and nearby locales. Expect a steadier snow pattern in the morning with light to moderate winds around 30–40 km/h, not quite Blizzard conditions. Ottawa and central Ontario towns are mostly under 5–10 cm, so widespread school closures aren’t likely, though a few districts with around the 10–15 cm mark could see minor delays and slower morning commutes. Roads will be slick in spots; allow extra time, and get the kids ready early for potential slow buses in exposed corridors.
Stop relying on outdated “magic number” calculators.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 In a fast-moving winter storm, that data is obsolete before you even wake up.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.