Alberta · Multi-model forecast · 2026–27 season

Snow Day Predictor AlbertaWill school be cancelled tomorrow in Alberta?

Live overnight forecast for every Alberta postal code — from the Calgary Board of Education and Edmonton Public footprint through Red Deer, Lethbridge, Medicine Hat, Fort McMurray, and Grande Prairie. The predictor is tuned to Alberta’s cold-driven closure thresholds rather than the snow-driven thresholds used further east.

Quick check:

Multi-model forecast, five-factor closure engine, province-aware results. No sign-up, no tracking of your queries.

Cities covered

School board groups

Closure factors

Forecast models

What makes Alberta unique

Alberta has the highest snow tolerance of any Canadian province — 25 cm overnight is a normal Tuesday for the CBE and EPSB. It is the only province where a chinook can warm temperatures by 20 °C in an hour and melt a foot of snow within a day, and where closures are almost always driven by extreme cold (−40 °C wind chill) or blizzard winds rather than snow accumulation itself.

Province overview

Alberta snow day forecast — what makes the province different

Alberta runs on a different closure logic than the rest of Canada. The Calgary Board of Education, Edmonton Public Schools, and most of the province’s large divisions routinely operate through 20–30 cm of overnight snow without cancelling buses or closing buildings. Snowfall alone almost never closes an Alberta school. What closes Alberta schools is extreme cold — wind chill values below −40 °C — and blizzard winds that reduce highway visibility to zero. The forecast on this page reflects that reality: our Alberta regional profile weights wind chill and blowing-snow forecasts heavily and gives ordinary snowfall totals far less weight than the GTA or Atlantic Canada profiles.

The chinook is Alberta’s signature winter phenomenon and the single biggest reason Calgary closes less often than its latitude would suggest. Warm, dry air descending the eastern slopes of the Rockies can raise Calgary temperatures from −25 °C to +5 °C inside an hour, melting fresh snow within a day. A storm that would shut down Winnipeg for two days can be gone from Calgary streets by the following afternoon. Chinook events do create their own hazard — meltwater refreezing as black ice — and our forecast accounts for that with a freezing-surface signal layered on top of the snow forecast.

Unlike Ontario, Alberta does not have multi-board student transportation consortia. Each school division contracts its own bus operators and makes its own transportation call. That means a CBE bus cancellation does not automatically apply to Calgary Catholic, and Edmonton Public can run buses on a day Edmonton Catholic cancels them (and vice versa). Our predictor returns school and bus probabilities by division rather than by region, and we surface both numbers because in Alberta they often diverge.

7 cities covered

Snow day predictor by Alberta city

Every Alberta city below has its own dedicated forecast page that runs the predictor automatically for that location.

Calgary

Calgary Region

CBE · Calgary Catholic SD · Rocky View Schools

Chinook belt; one of the lowest closure rates of any major Canadian city despite cold winters.

Edmonton

Capital Region

EPSB · Edmonton Catholic SD

Deep continental cold; closures driven by wind chill rather than snow totals.

Red Deer

Central Alberta

Red Deer Public · Red Deer Catholic

On the Edmonton–Calgary corridor; closure pattern sits between the two major cities.

Lethbridge

Southern Alberta (chinook belt)

Lethbridge SD · Holy Spirit Catholic

Frequent chinooks plus the strongest sustained winds in the province; blowing-snow closures more common than snowfall closures.

Medicine Hat

Southeast Alberta

Medicine Hat Public · Medicine Hat Catholic

Driest major city in Alberta; closures usually wind- and cold-driven rather than snow-driven.

Fort McMurray

Wood Buffalo (northern Alberta)

Fort McMurray Public · Fort McMurray Catholic

Long boreal winter with extreme cold below −40 °C as the dominant closure trigger.

Grande Prairie

Peace Region (northwest)

Grande Prairie Public · Grande Prairie Catholic

Peace Country winters are long; extreme cold and heavy seasonal snow combine.

School boards

Alberta school boards and their closure patterns

A snapshot of the boards we model when generating Alberta forecasts, grouped by region.

Calgary Region

Calgary Board of Education (CBE)
One of Canada’s largest school boards; serves the City of Calgary. Rarely closes for snow alone — closures are almost always extreme-cold or blizzard driven.
Calgary Catholic School District
Catholic schools across Calgary; closure decisions often align with CBE but are made independently.
Rocky View Schools
Airdrie, Cochrane, Chestermere, and surrounding rural Calgary-area communities. Longer bus routes can trigger transport cancellations on days CBE buses still run.
Foothills School Division
Okotoks, High River, and the southern foothills. Mountain-front weather exposure.
Conseil scolaire FrancoSud
French-language public schools across southern Alberta.

Edmonton & Capital Region

Edmonton Public Schools (EPSB)
City of Edmonton; one of the two largest divisions in Alberta. Wind-chill cutoff is the dominant closure factor.
Edmonton Catholic Schools
Catholic schools across Edmonton; usually aligns with EPSB on extreme-cold days.
Black Gold School Division
Leduc, Beaumont, and Devon south of Edmonton. Rural bus routes make weather calls more sensitive than in the city proper.
Elk Island Public Schools
Sherwood Park, Strathcona County, and surrounding communities east of Edmonton.
St. Albert Public Schools
St. Albert north of Edmonton; closure decisions typically align with EPSB and Edmonton Catholic.
Conseil scolaire Centre-Nord
French-language public board across northern and central Alberta.

Central Alberta

Red Deer Public Schools
City of Red Deer; sits on the Edmonton–Calgary corridor.
Red Deer Catholic Regional Schools
Catholic schools across Red Deer and the surrounding region.
Chinook’s Edge School Division
Red Deer County rural communities; long bus routes exposed to highway closures.
Wolf Creek Public Schools
Ponoka, Lacombe, and surrounding central Alberta communities.

Southern Alberta

Lethbridge School Division
City of Lethbridge in the heart of the chinook belt; wind events drive most closures.
Holy Spirit Roman Catholic Separate Regional Division
Catholic schools across Lethbridge and southern Alberta.
Medicine Hat Public School Division
City of Medicine Hat in southeastern Alberta.
Medicine Hat Catholic Board of Education
Catholic counterpart serving Medicine Hat.
Westwind School Division
Southern Alberta rural communities; long highway routes and frequent blowing-snow exposure.

Northern Alberta

Fort McMurray Public Schools
Regional Municipality of Wood Buffalo; extreme-cold thresholds drive nearly all weather closures.
Fort McMurray Catholic Schools
Catholic schools across Wood Buffalo.
Grande Prairie Public School Division
City of Grande Prairie in the Peace Country.
Grande Prairie Catholic Schools
Catholic counterpart serving Grande Prairie.
Peace Wapiti Public School Division
Peace River rural communities; long bus routes through northern Alberta highways.
Northland School Division
Indigenous and remote northern Alberta communities. Extreme-cold and storm closures are the dominant pattern.

Bus cancellations

How Alberta student transportation cancels buses

In Canada, bus cancellations are a separate decision from full school closures — and most regions coordinate this through a student transportation consortium rather than each individual board.

By divisionNo provincial consortia
Alberta does not use multi-board student transportation consortia the way Ontario and parts of Quebec do. Every Alberta school division contracts its own buses and makes its own transportation call. A CBE bus cancellation does not bind Calgary Catholic, and Edmonton Public can run buses on a day Edmonton Catholic cancels them. Our predictor returns per-division probabilities for this reason.

Regional weather patterns

Alberta snow zones and storm patterns

The signature weather phenomena our forecast accounts for across Alberta.

Calgary / Foothills Chinook Belt
Frequent chinook events can warm temperatures by 20 °C in an hour and clear fresh snow within a day. One of the most distinctive winter weather phenomena in Canada — and the main reason Calgary closes less often than its latitude suggests.
Edmonton–Calgary Corridor
The most heavily populated belt of the province. Deep continental cold and routine operation past −30 °C. Closures here usually require wind chill below −40 °C or blizzard winds rather than snow accumulation alone.
Boreal Forest North (Fort McMurray, Grande Prairie)
Heavy seasonal snowfall combined with extreme cold below −40 °C. Long winters, long highway routes, and remote communities all push closures earlier in the cold curve than further south.
Foothills / Mountain Front
Banff, Canmore, Pincher Creek, and the eastern Rockies. Mountain-driven storms can stall against the front range and dump locally heavy snow that the prairies never see.
Eastern Slopes & Prairies
Lethbridge, Medicine Hat, and the southeastern prairies. Sustained winds drive blowing-snow events that close highways and trigger bus cancellations on days the snowfall total is modest.
Northern Alberta / Peace Country
Grande Prairie, Peace River, and the northwest. Long winters and extreme cold are the dominant closure trigger; deep cold past −45 °C wind chill drives the calendar.

History

Notable Alberta snow days in recent winters

Recent storms and cold events that shaped how Alberta school boards make the morning call.

Polar vortex closures
February 2019
A multi-day polar vortex pushed wind chill values below −45 °C across Edmonton, Calgary, and northern Alberta. EPSB, CBE, Calgary Catholic, and Edmonton Catholic all closed for multiple days — an unusual joint shutdown across the two largest cities, and a clear demonstration that cold, not snow, is what closes Alberta schools.
Edmonton extreme cold snap
January 2014
Wind chill values near −50 °C across Edmonton triggered outdoor activity cancellations and partial closures across EPSB and Edmonton Catholic. The benchmark case for the −40 °C wind-chill threshold our Alberta profile applies.
Early-season central Alberta storm
November 25, 2018
An early-season storm dropped 25–35 cm across Edmonton and central Alberta, with closures across EPSB, Edmonton Catholic, and several surrounding divisions. Notable because Alberta’s normally high snow tolerance was not enough to keep schools open when accumulations stacked up before plowing crews had ramped up for winter.
Unusually early heavy snowfall
October 2022
A mid-October storm dropped heavy snow across Calgary and southern Alberta and forced closures more typical of January. Early-season events are routinely under-forecast because the public expects fall weather; our forecast surfaces them at full weight regardless of the calendar date.
Pre-Christmas extreme cold
December 22, 2022
A pre-Christmas extreme cold event drove wind chill values near −45 °C across the Edmonton–Calgary corridor and closed schools in both cities the day before the holiday break. CBE, EPSB, and the Catholic counterparts all closed; snowfall was incidental.
Calgary chinooks
Recurring — every winter
Distinctive Alberta event where temperatures swing from −25 °C to +5 °C within hours. Chinooks rapidly clear snow but the meltwater refreezes overnight as black ice, occasionally triggering bus cancellations the morning after — closures driven by a thaw rather than a storm.

FAQ

Alberta snow day frequently asked questions

The 9 questions Alberta parents and teachers ask us most often.

Will the CBE close tomorrow?

Enter your Calgary postal code or "Calgary, Alberta" into the predictor at the top of this page to see tomorrow’s closure probability for the Calgary Board of Education. CBE closes very rarely for snow alone — the threshold that matters is wind chill below −40 °C or sustained blizzard winds. Our forecast weights those signals accordingly.

What is a chinook and how does it affect Calgary snow days?

A chinook is warm, dry air descending the eastern slopes of the Rockies. It can lift Calgary temperatures from −25 °C to +5 °C in an hour and melt fresh snow within a day. The practical effect is that overnight snow which would close schools in Winnipeg is often gone from Calgary by the following afternoon. The secondary risk is black ice once the chinook ends and meltwater refreezes — we flag that separately in the forecast.

Why does Alberta operate through −30 °C when other provinces close?

Alberta school divisions are built around continental-cold winters. Heating systems, bus fleets, and operational expectations all assume that −30 °C is a working temperature. Most divisions set their cold-day threshold at wind chill below −40 °C, with extreme-cold warnings from Environment and Climate Change Canada used as a reference point rather than an automatic trigger.

Will school be cancelled tomorrow in Edmonton?

Type your Edmonton postal code or "Edmonton, Alberta" above. Edmonton Public Schools and Edmonton Catholic Schools make closure decisions independently but usually align on extreme-cold days. The dominant trigger is wind chill below −40 °C; snowfall alone almost never closes Edmonton schools.

How cold does it have to be for EPSB or CBE to close?

Both divisions look at wind chill rather than air temperature. The practical cutoff for full closures sits around −40 °C wind chill sustained through the school day, with outdoor activity restrictions applied at warmer thresholds. Our Alberta regional profile uses a −40 °C wind-chill threshold as the primary closure signal.

Does the predictor cover Fort McMurray and Grande Prairie?

Yes — Fort McMurray Public, Fort McMurray Catholic, Grande Prairie Public, Grande Prairie Catholic, Peace Wapiti, and Northland School Division are all supported. Northern Alberta closures use the same Alberta regional profile but the cold curve runs colder and longer than in Calgary or Edmonton.

How do Alberta school divisions announce closures?

Each division announces independently through its own website, app, and social channels — there is no provincial consortium that coordinates across boards. CBE and EPSB typically post by 6:00 am on the day-of for cold-day closures; storm-driven closures occasionally announce the night before when the overnight forecast is clear. Our predictor returns an advance probability the night before regardless of when the official call is made.

Are buses ever cancelled in Calgary while schools stay open?

Yes — this is most common in the rural divisions around Calgary (Rocky View, Foothills) where long bus routes cross open highways exposed to blowing snow. CBE city routes are less commonly cancelled because they run inside the urban core. Our predictor returns school and bus probabilities separately because in Alberta they often diverge.

Why does Alberta have such a high snow tolerance compared to other provinces?

Three reasons compound. First, chinooks routinely clear snow from southern Alberta within a day, so accumulations rarely stack up over multiple storms the way they do in eastern Canada. Second, Alberta divisions have operational experience with continental cold and have built fleets and heating systems around it. Third, the population is concentrated along a single corridor (Edmonton–Calgary) with well-developed plowing infrastructure. The result is the highest snow-day tolerance of any province — closures here require cold or wind, not snow.

Other provinces