Calgary Snow Day Predictor — CBE & Calgary Catholic School Closure Forecast
Calgary Snow Day Predictor
Canada's most accurate snow day predictor
Will Calgary Schools Be Closed Tomorrow?
Calgary’s winter weather is defined by two competing forces: the Arctic outbreaks that push south from the north and can plunge temperatures to -30°C to -40°C apparent temperature, and the legendary Chinook winds — warm Pacific air spilling over the Rockies that can raise temperatures from -20°C to +10°C within hours, melting any snow accumulation. The result is that Calgary’s closure pattern is very different from Eastern Canadian cities: many snowfall events are quickly erased by Chinooks before they can accumulate, but when Arctic air locks in without a Chinook break, the city can experience days of extreme cold that trigger closure protocols regardless of snowfall.
School Boards We Cover
- Calgary Board of Education (CBE) — Largest school board in Alberta. 125,000+ students, 240+ schools. cbe.ab.ca | Announces: by 6:30 AM | Radio: 660 NEWS (CFFR 660 AM) | Twitter/X: @CBEdn
- Calgary Catholic School District (CCSD) — cssd.ab.ca | Twitter/X: @CalgaryCSSD
- Palliser Regional Schools — Rural area surrounding Calgary. pallisersd.ab.ca
- Rocky View Schools — Airdrie, Cochrane, Chestermere. rockyview.ab.ca
Calgary School Closure Triggers — Cold vs Snow
Unlike Eastern Canadian cities, Calgary school closures are more often driven by extreme cold than by snowfall volume. The CBE and CCSD evaluate both: when overnight snowfall is 15+ cm, closures are considered. But when wind chill reaches -40°C or colder, the boards activate extreme cold review regardless of snowfall. Students waiting at outdoor bus stops in -45°C apparent temperature face real frostbite risk within minutes of exposure. Our Calgary predictions account for both precipitation-based and temperature-based closure triggers.
Calgary Snow Day History
CBE averages approximately 2–4 closure days per year. Chinook events prevent many snowfalls from accumulating to closure thresholds. Extreme cold events — particularly in January during Arctic air mass establishment — are more likely to cause closures than snowfall events. In Chinook-influenced winters, Calgary can go entire seasons with zero closures.
When Does CBE Announce?
By 6:30 AM via cbe.ab.ca, 660 NEWS radio (CFFR 660 AM), CBE Connect app (registered families), and Twitter/X @CBEdn.
Nearby Communities
- Edmonton Snow Day Predictor — EPSB (3 hours north)
- Alberta Province Overview
Frequently Asked Questions — Calgary Snow Days
Do Chinook winds prevent school closures in Calgary?
Frequently yes. A Chinook arriving the night before a storm can melt 20 cm of snow within 12 hours, preventing accumulation from reaching closure thresholds. This is why Calgary’s closure rate is lower than Edmonton’s despite receiving similar or greater total snowfall in some years — Edmonton’s location means it is less often visited by Chinooks.
Does extreme cold close Calgary schools even without snow?
Yes. When wind chill reaches -40°C or colder and is sustained through morning hours, the CBE and CCSD review closure protocols. Students waiting at outdoor bus stops face genuine safety risks in these conditions regardless of whether it is snowing.