Woodstock Snow Day Predictor — Thames Valley DSB and London District Catholic
Will Tomorrow Be a Snow Day?
Canada's most accurate snow day predictor
Woodstock sits in Oxford County in Southwestern Ontario, between London and Kitchener, sharing the Thames Valley District School Board (TVDSB). The city averages approximately 160–190 cm of snow per year and sits in an area exposed to Lake Huron lake-effect snow arriving on northwest winds. Its position amid the flat farmland of Oxford County means the TVDSB’s rural bus routes are frequently affected by drifting snow.
Will Woodstock schools be closed tomorrow? Enter your city in the predictor above for tonight’s closure probability, updated hourly from Environment Canada data. Always confirm with your school board’s official channels before making plans.
Woodstock School Boards — Who Decides Closures
- Thames Valley District School Board (TVDSB) — Woodstock, London, St. Thomas, Tillsonburg, and Oxford, Middlesex, Elgin counties. tvdsb.ca | Announces: by 6:00 AM | Radio: Heart FM 104.7, AM 1290 CJBK | Twitter/X: @TVDSBschools
- London District Catholic School Board (LDCSB) — Catholic board covering Woodstock area. ldcsb.ca | Announces: by 6:00 AM | Twitter/X: @LondonCatholic
- Conseil scolaire Viamonde / MonAvenir — French boards serving the region.
Woodstock Snow Day Triggers — What Closes Schools Here
Woodstock’s closures are driven by:
- Lake Huron lake-effect: Northwest winds crossing Lake Huron produce snow squalls that reach Oxford County, delivering locally heavy bands to Woodstock.
- Oxford County drifting: The flat, open farmland of Oxford County produces significant blowing and drifting snow that closes rural bus routes even when Woodstock streets are clear.
- Highway 401 corridor storms: Woodstock sits on the 401 between London and Kitchener, catching major systems that track along the corridor.
How Often Do Woodstock Schools Close?
The Thames Valley DSB’s Woodstock and Oxford County schools close approximately 4–7 days per year, with rural bus cancellations more frequent. January and February are peak months.
See Also — Nearby Predictors and Guides
Explore the Ontario Snow Day Predictor for all school boards in the province, or check nearby cities:
Related guides:
Frequently Asked Questions — Woodstock Snow Days
Which school board and bus zone does the Woodstock predictor track?
The predictor tracks data for the Thames Valley District School Board (TVDSB) and the London District Catholic School Board (LDCSB). For student transportation, Woodstock is located within the Oxford County / East Zone of the Southwestern Ontario Student Transportation Services (STS).
Why does the Woodstock predictor show high cancellation odds when town roads look clear?
Woodstock shares its transit zone with expansive rural areas across Oxford County, including Tillsonburg, Ingersoll, and Zorra. The predictor calculates risk for the entire zone, meaning that heavy drifting snow, low visibility, or black ice on rural country lines outside town limits can cancel buses for Woodstock schools even if the main city streets are salted and clear
How much snow does it take to trigger a high percentage on the Woodstock predictor?
There is no exact centimeter rule, but the predictor’s algorithm spikes sharply when a weather warning forecasts 10 to 15 cm of rapid accumulation right before the morning commute. The predictor weighs freezing rain and ice buildup on critical commuter corridors like Highway 401 and Highway 2 much heavier than standard, dry snowfall.
If the Woodstock predictor hits 100% and buses are cancelled, can students still go to school?
Yes, schools almost always stay open for walking students and staff even when buses are called off. However, a maximum predictor percentage helps parents prepare for “inclement weather days” where regular curriculum lessons and tests are officially paused for the day.
What time is the Woodstock snow day predictor most accurate?
The morning check between 5:00 AM and 5:30 AM is the most accurate. While checking at 9:00 PM the night before provides a helpful baseline estimate, volatile winter storm systems moving through Southwestern Ontario require final morning radar updates right before the official STS announcement at 6:30 AM.