Alberta winter outlook
Alberta's winter risk is dominated by extreme cold and by ice created when a thaw refreezes, rather than by snowfall depth. Run the calculator, then read the provincial context.
Live Alberta forecast estimate
Enter a location to compare tomorrow's snow, ice, temperature, wind and morning timing.
Regional pattern
A single province-wide snowfall figure rarely explains a school decision here. These are the patterns worth knowing before reading any Alberta forecast.
Warm, dry chinook winds descending the eastern slopes of the Rockies can raise temperatures dramatically in a matter of hours, especially in southern Alberta. Snow melts, water runs across pavement, and then the wind stops or the temperature drops back and everything refreezes. The resulting sheet ice on residential streets and sidewalks is a far more common Alberta hazard than deep accumulation.
Prolonged Arctic outbreaks push temperatures and wind chills to levels where waiting outdoors is genuinely unsafe. Extreme cold warnings are a routine part of an Alberta winter, and they are the most common reason for transportation changes. Cold also causes mechanical problems: buses that will not start are a real operational constraint.
Away from the cities, highways and rural roads cross wide, unsheltered country. Wind lifts existing snow and cuts visibility to nothing without a single new flake falling. Rural bus routes are cancelled for visibility and drifting far more often than for snowfall amount.
Across rural Alberta the binding constraint is visibility and drifting on long highway runs, so transportation is suspended while schools in town stay open for students who can get there on foot. In the cities the constraint is more often the fleet itself and the walk to the stop. One provincial warning can therefore produce completely different operational responses a hundred kilometres apart.
Permanent city pages
Each page loads its own coordinates, its own local closure factors and its own official sources. Any other Alberta community can be searched directly in the calculator above.
The percentage on this page is a weather-based planning estimate. It scores forecast snow and ice, temperature, wind chill, morning timing, broad area type and school level, and it shows each of those with its own value and published weight. It does not observe road treatment, staffing, building utilities or the judgement of the people who actually make the call. The methodology page documents every threshold and the accuracy and limitations page is explicit about the gaps.
No school system in Alberta publishes a snowfall number that triggers a closure, and this site does not invent one. Use the estimate to decide whether a backup plan is worth arranging, then let the official announcement decide what actually happens.
Primary weather and road-condition sources covering Alberta. School and transportation decisions come from individual school systems.
Alberta questions
Air descending the eastern slopes of the Rockies compresses and warms, which can lift Alberta temperatures far above what the season suggests, sometimes inside a single afternoon. Schools feel the aftermath rather than the warmth: everything that melted turns to ice as soon as the wind eases or the sun goes down.
The usual provincial pattern is that buildings stay open while transportation is reduced, rerouted or cancelled, because the risk sits with students waiting outdoors and with vehicles that struggle to start. Divisions publish their own criteria, so treat the temperature and wind chill rows as context and the division's notice as the decision.
Environment and Climate Change Canada issues them, and this page links directly to the national alert index. The automated alert panel inside the calculator queries a United States government service, so it stays empty for Alberta locations; the link is provided instead of pretending otherwise.
Temperature and wind chill, most of the time. Snow and ice contribute when an organised system tracks through, and the icing signal appears after a thaw, but the province's characteristic winter pressure comes from how cold it is rather than from how much has fallen. Every factor appears in the result with its own value and published weight.