Kingston · Ontario · 2026–27 season
Snow Day Predictor KingstonWill school be cancelled tomorrow in Kingston?
Live overnight forecast for Kingston, Amherstview, Kingston Mills, and the surrounding Frontenac County communities. Tuned to Limestone District School Board and Algonquin and Lakeshore Catholic District School Board closure patterns, with a Tri-Board Student Transportation Services bus cancellation probability returned separately.
Multi-model forecast, five-factor closure engine, province-aware results. No sign-up, no tracking of your queries.
What makes Kingston unique
Kingston sits on the east shore of Lake Ontario where the lake-effect band can deliver heavy snow when winds align from the southwest. It is also a military and university town with Queen’s University and Canadian Forces Base Kingston nearby.
Eastern Ontario forecast
Kingston snow day forecast, what to expect this winter
Kingston sits at the eastern end of Lake Ontario where the lake meets the St. Lawrence River, a geography that produces a winter climate distinct from either the Greater Toronto Area to the west or Ottawa to the north. Average annual snowfall in Kingston is around 170 cm, higher than Toronto but lower than Ottawa, with the difference driven almost entirely by lake-effect bands that set up off the eastern shore of Lake Ontario when winds come from the southwest or west. On those days, Kingston can record 20 to 40 cm while Toronto stays dry, and the Limestone District School Board is making a closure call that no GTA board is facing.
School operations in Kingston are split across four boards. The Limestone District School Board (LDSB) is the public English board, serving Kingston, Frontenac County, and parts of Lennox and Addington. The Algonquin and Lakeshore Catholic District School Board (ALCDSB) covers the Catholic English schools across the same geography. Two French boards, the Conseil des écoles publiques de l’Est de l’Ontario (CEPEO) and the Conseil des écoles catholiques du Centre-Est (CECCE), serve the smaller French-language student population in the city. Closure coordination among these boards is driven primarily by transportation: Tri-Board Student Transportation Services (TBSTS) operates the buses for LDSB and ALCDSB along with Hastings-Prince Edward DSB to the west.
For most Kingston families, the day-of decision is a Tri-Board call rather than an individual board call. When TBSTS cancels buses, it cancels across the entire Tri-Board region in a single morning announcement that covers Kingston, Napanee, Belleville, Picton, and the rural townships in between. Schools usually remain open as shelter for students who can walk, but rural families across Frontenac, Lennox and Addington, and Hastings counties keep their children home on bus-cancellation days. The forecast on this page returns the probability of that Tri-Board call alongside the probability of a full school closure, because in Kingston those are two different questions.
School boards
Kingston school boards we model
The boards and transportation operators that make the morning closure call for Kingston.
- Limestone District School Board (LDSB)
Public English board for Kingston and surrounding Frontenac County. Serves more than 18,000 students across roughly 50 schools. Closure decisions are made in coordination with Tri-Board Student Transportation Services.
- Algonquin and Lakeshore Catholic District School Board (ALCDSB)
Catholic English board covering Kingston, Napanee, Belleville, and the broader Eastern Ontario corridor. Shares Tri-Board transportation with Limestone DSB, so bus cancellations almost always apply to both systems.
- Conseil des écoles publiques de l’Est de l’Ontario (CEPEO)
French-language public board serving Kingston and Eastern Ontario from a central administration in Ottawa. Smaller footprint in the city, with separate transportation arrangements outside the Tri-Board consortium.
- Conseil des écoles catholiques du Centre-Est (CECCE)
French-language Catholic board across Eastern Ontario including Kingston. Closure decisions are coordinated regionally rather than through the Tri-Board call, and can diverge from LDSB or ALCDSB on borderline days.
Bus transportation
Tri-Board Student Transportation Services (TBSTS) operates buses for Limestone DSB and ALCDSB along with Hastings-Prince Edward DSB to the west. Cancellation decisions cover the entire Tri-Board region in a single morning call, typically posted between 5:45 and 6:15 am at triboard.ca. A Tri-Board cancellation applies to Kingston, Napanee, Belleville, and the rural routes in between; French CEPEO and CECCE buses run on a separate decision process.
Local weather
Kingston’s signature winter weather patterns
The phenomena that produce most Kingston snow days.
- Lake Ontario east-shore lake-effect
When winds blow from the southwest or west across the long fetch of Lake Ontario, narrow but intense snow bands set up over Kingston and the Frontenac islands. Snowfall rates of 5 to 10 cm per hour are possible inside the band. These events are highly localized: Kingston can be buried while Belleville to the west sees nothing, and the forecast leans on short-range high-resolution models to position the band correctly.
- St. Lawrence wind and freezing-fog events
Cold air flowing down the St. Lawrence corridor on northeast winds produces freezing fog and freezing drizzle that can glaze roads in Kingston without producing measurable snow. These events are difficult to forecast and frequently catch Tri-Board off guard, leading to mid-morning bus call-back decisions rather than overnight cancellations.
- Cataraqui River valley cold-air pool
On clear calm winter nights, cold dense air pools in the Cataraqui River valley north of downtown Kingston, dropping temperatures 5 to 8 °C below the airport reading. Wind chill warnings for LDSB schools in the valley can trigger when downtown stays just above the threshold, particularly for early morning bus stops.
- Colorado low storm track
The dominant major-storm pattern for Eastern Ontario. Storms originating over the Colorado Rockies track northeast across the Great Lakes and deliver 20 to 40 cm snowfalls with mixed precipitation. Kingston sits in the favoured north-side snowfall corridor of these systems, often receiving more snow than Toronto from the same low.
- Polar air outbreaks producing extreme wind chill
Arctic high pressure builds south across Quebec and Northern Ontario several times each winter, dropping Kingston temperatures to −25 °C or colder with steady northwest winds. Tri-Board cancels buses for wind chill at roughly −35 °C with windward exposure, particularly on the rural routes north of Highway 401.
History
Notable Kingston snow days in recent winters
Storms and ice events that shaped how Kingston school boards approach the morning call.
Great Ice Storm of 1998
January 5-10, 1998The defining modern winter event for Eastern Ontario. Five days of freezing rain deposited up to 100 mm of ice glaze across Kingston, Frontenac County, and the St. Lawrence corridor. Hydro infrastructure collapsed under the ice load, leaving Kingston without power for days and forcing every school board including the predecessor of Limestone DSB to close for over a week. Canadian Forces Base Kingston deployed personnel to assist with the regional emergency response.
Eastern Ontario major storm
January 14, 2022A Colorado low tracked across Lake Ontario, dropping 30 to 40 cm of snow on Kingston with sustained winds of 60 km/h. Tri-Board Student Transportation Services cancelled buses across the entire region, and LDSB closed school buildings as a safety measure. Highway 401 saw multiple closures west of Kingston that morning.
Late-season ice storm
April 14-15, 2018A two-day freezing rain event coated Kingston and the broader Tri-Board area with 25 mm of ice. Tri-Board cancelled buses both days, and LDSB and ALCDSB closed buildings for safety. A reminder that the Kingston snow day season extends well into April when warm advection rides over a stubborn cold surface layer.
Polar vortex wind-chill closures
February 2019A series of arctic outbreaks brought multiple days of −30 °C temperatures with wind chills near −40. Tri-Board cancelled buses on at least four separate mornings, primarily for rural routes north of Kingston. Schools remained open as shelters, but rural attendance dropped sharply on the coldest mornings.
East Lake Ontario lake-effect event
December 2010A persistent west-southwest flow set up a lake-effect band that parked over the eastern end of Lake Ontario for nearly 48 hours. Kingston recorded over 60 cm of snow while Toronto saw barely a flurry. Tri-Board cancelled buses across the region for two consecutive days, and Highway 401 was closed in sections east of Trenton.
Mid-March Colorado low
March 2017A late-season Colorado low delivered 25 cm of heavy wet snow to Kingston with thunder-snow reported in Frontenac County. Tri-Board cancelled buses and LDSB closed schools, the latest seasonal full closure in recent memory.
FAQ
Kingston snow day frequently asked questions
The 7 questions Kingston parents and teachers ask us most.
Will Limestone DSB close tomorrow?
Type your Kingston postal code or "Kingston, Ontario" into the predictor above. The Limestone District School Board (LDSB) makes the final closure call based on a combination of overnight snowfall, freezing rain, and wind chill, with the decision usually posted by 6:00 am at limestone.on.ca. The predictor returns a school-closure probability alongside the Tri-Board bus cancellation probability, because in Kingston those are two different questions on most storm days.
Are Tri-Board buses cancelled today?
For the official call, check triboard.ca or the Tri-Board Student Transportation Services social media accounts. Tri-Board announces bus cancellations between 5:45 and 6:15 am the morning of, applying to Limestone DSB, Algonquin and Lakeshore Catholic DSB, and Hastings-Prince Edward DSB across Kingston, Napanee, Belleville, Picton, and the rural routes in between. Our predictor gives you an advance probability the night before based on the overnight forecast.
How does Lake Ontario east-shore lake-effect work for Kingston?
Lake-effect bands form when cold air crosses the relatively warm waters of Lake Ontario and dumps moisture as snow on the downwind shore. For Kingston, the band sets up on southwesterly or westerly winds, with the long fetch across the entire length of Lake Ontario producing snowfall rates of 5 to 10 cm per hour inside the band. The result is highly localized: Kingston can record 30 cm while Belleville to the west sees nothing. The forecast pulls hourly data at your exact coordinates so the band shows up correctly when it sits over your neighbourhood.
Will school be cancelled in Napanee or Belleville tomorrow?
Napanee and Belleville are both inside the Tri-Board Student Transportation Services region, so a Tri-Board bus cancellation applies to schools in all three cities at once. School-building closures, however, are made by each board separately: Limestone DSB for Kingston and most of Lennox and Addington, ALCDSB across the broader Catholic English geography, and Hastings-Prince Edward DSB for Belleville and Prince Edward County. The predictor can be re-run for Napanee or Belleville coordinates if you want the local school-closure probability for those communities.
Does ALCDSB Catholic always close with Limestone DSB?
On Tri-Board bus cancellation days, Algonquin and Lakeshore Catholic District School Board (ALCDSB) and Limestone DSB are running on the same transportation decision, so for bus families the answer is yes. School-building closures are independent decisions, but in practice ALCDSB and Limestone DSB rarely diverge on full closure days because they are looking at the same weather and the same road network. Borderline days occasionally produce a split, with one board closing and the other holding for in-school attendance.
How does Kingston winter weather compare to Ottawa?
Ottawa averages more total snowfall than Kingston, around 220 cm versus 170 cm, and Ottawa’s cold snaps tend to be colder and longer. But Kingston has a winter risk Ottawa does not: the Lake Ontario east-shore lake-effect band, which can dump localized 30 cm snowfalls on Kingston while Ottawa stays dry. For Tri-Board closures specifically, Kingston’s storm count is closer to Belleville and Napanee than to Ottawa, which is on a separate transportation system and a different storm track exposure.
Will French CECCE or CEPEO schools close with the English boards?
Not automatically. The Conseil des écoles catholiques du Centre-Est (CECCE) and the Conseil des écoles publiques de l’Est de l’Ontario (CEPEO) operate transportation separately from Tri-Board and make their own closure calls from regional headquarters in Ottawa. On major storms, the decisions usually align with Limestone DSB and ALCDSB, but on borderline lake-effect or wind-chill days the French boards can run while the English boards cancel, or the reverse. If your child attends a CECCE or CEPEO school, confirm the call on the board’s own communication channels.
Near Kingston
Nearby Ontario cities
Other Ontario cities our forecast covers — same regional profile, different local weather.
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