Barrie Snow Day Predictor

The chance snow, ice or cold closes school in Barrie on the next school morning, from the latest forecast

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How the estimate works

What is the Barrie snow day predictor?

It estimates the chance that weather closes schools or cancels buses in Barrie on the next school morning, from the hourly forecast for the city between 6 pm and 8 am: overnight snow, freezing rain, cold and wind. It’s an estimate, not an announcement; only the bus consortium and the school boards decide.

Last updated: October 15, 2026

Local weather

How much snow does Barrie get?

Environment and Climate Change Canada’s 1981–2010 climate normals for the Barrie WPCC station show:

Source: Environment and Climate Change Canada, Canadian Climate Normals 1981–2010, Barrie WPCC (climate ID 6110557; snowfall measured 1981–2006). Long-term averages, not a forecast.
Average snowfall per year223.0 cm
Snowiest monthJanuary, 65.9 cm
Days with 5 cm or more of snowfall16.5 a year
Coldest month (daily average)January, −7.7°C

That’s about 100 cm more snow a year than the Toronto station records in the same normals (121.5 cm), and more than twice as many days with 5 cm or more (16.5 against 7.7). The station’s biggest one-day snowfall on record was 65.0 cm, on January 9, 1978.

What drives snow days in Barrie

Barrie sits on Kempenfelt Bay on Lake Simcoe, with Georgian Bay, part of Lake Huron, to the northwest. Environment Canada describes snow squalls as sudden, moderately heavy snowfall with blowing snow and gusty winds, “intense but very localized”, that “often blow in off the Great Lakes”. One part of Simcoe County can be buried while another stays clear, which is why buses are cancelled by weather zone, and why a forecast for one point can miss a narrow squall band.

School boards

School boards serving Barrie

Two English-language boards run Barrie’s public and Catholic schools, and both use the same bus consortium. French-language schools have their own boards.

Simcoe County District School Board (SCDSB)

The public board. Its transportation page says that when buses are cancelled, SCDSB schools remain open for student learning, and students who can’t get there can find their work on D2L or Google Classroom. It also says it’s always a family decision whether it’s safe for a child to leave for school in severe weather.

Simcoe Muskoka Catholic District School Board (SMCDSB)

The Catholic board. Its transportation page says its transportation is coordinated by the Simcoe County Student Transportation Consortium and sends families there for bus cancellations. It doesn’t say whether schools stay open when buses are cancelled, so check the board’s own announcements.

Buses

Barrie school bus cancellations

The Simcoe County Student Transportation Consortium (SCSTC) runs school buses and vans for both boards, and its website is the official place to check. From its site and SCDSB’s transportation page:

  • Decision: the consortium and bus operators review road and weather conditions on a 5:30 am conference call and usually decide before 6 a.m.
  • Announcement: the consortium’s site says every effort is made to post cancellations between 6:00 and 6:30 a.m. They also go out on its Twitter account, @SCSTC_SchoolBus, and to local radio stations.
  • Weather zones: Simcoe County is split into four zones, and Barrie is in the Central zone with Innisfil and Angus. A cancellation can cover one zone, several or the whole county.
  • All day: a weather cancellation lasts the whole day, so buses cancelled in the morning don’t run home in the afternoon.

This page predicts the weather, not official cancellations. A high chance here doesn’t mean buses are cancelled; only the consortium’s announcement does.

Method

How the estimate works for Barrie

The same published formula as the main Snow Day Calculator, for the next school morning in Barrie’s time zone:

  • Snow is the biggest factor: 1 cm adds about 8 points and 15 cm or more about 70, halved if it’s above about 1°C at 7 am.
  • Freezing rain adds 30 to 65 points, cold at 7 am adds 10 at −18°C or colder and 20 at −26°C, and gusts of 48 km/h or more add 10 to 15 when there’s snow or ice.
  • The result stays between 1% and 99%: 60% or more reads Likely, 30–59% Maybe, and under 30% No Chance.

Every step is in How the snow day estimate works. The points are first estimates, not measured against real Barrie cancellations, so the accuracy is unknown. The points were first set for US school districts. In Simcoe County, buses can be cancelled while SCDSB schools stay open, so read a high % as rough snow-day weather, not a sure closure.

FAQ

Barrie snow day FAQ

Will there be a snow day in Barrie tomorrow?

Nobody knows until it’s announced. The calculator above estimates the chance from the latest forecast; check it the evening before and early in the morning, then check the bus consortium and your school board.

Where are Barrie bus cancellations announced?

On the Simcoe County Student Transportation Consortium’s website, simcoecountyschoolbus.ca, which aims to post them between 6:00 and 6:30 a.m., and on its Twitter account, @SCSTC_SchoolBus.

Are Barrie schools open when buses are cancelled?

For the public board, yes: SCDSB says its schools remain open for student learning when buses are cancelled. The Catholic board’s transportation page doesn’t say, so check SMCDSB’s own announcements.

How much snow does Barrie get?

About 223 cm a year on average, with January the snowiest month at 65.9 cm, in Environment and Climate Change Canada’s 1981–2010 climate normals for the Barrie WPCC station. On average, 16.5 days a year bring 5 cm of snow or more.

Why are buses cancelled in some parts of Simcoe County but not others?

The consortium splits the county into four weather zones (North, South, Central and West) and can cancel buses in one zone, several or all of them. Barrie is in the Central zone, with Innisfil and Angus.

Is this an official source?

No. This site isn’t connected to any school board, the bus consortium or the City of Barrie.