St Mary's Snow Day Calculator
Will St Mary's close tomorrow? Check the odds.
Powered by NOAA / National Weather ServicePowered by NOAA / National Weather ServiceWill St Mary's close tomorrow? Check the odds.
Powered by NOAA / National Weather ServiceSt Mary's is a middle school in Chilliwack, British Columbia, part of Catholic Independent Schools of Vancouver Archdiocese. The forecast above uses the school's own coordinates, so it reflects conditions at this campus rather than an average across the wider area.
Closure decisions for St Mary's are almost always made at the district level. If Catholic Independent Schools of Vancouver Archdiocese closes, this school closes with it — so the district-wide forecast is usually the number that matters (see the Catholic Independent Schools of Vancouver Archdiocese forecast).
British Columbia averages about 55 cm of snow per year. Coastal BC districts (Vancouver, Victoria) close at very low snow thresholds — even 5-10 cm can shut down schools. Interior and northern BC districts handle much more snow before closing.
We score the live forecast at this location against the factors that drive closure calls: snowfall total and intensity, when the heaviest accumulation lands relative to the morning commute, ice and freezing rain, wind chill, and how confident the forecast models are. You get a probability for a full closure, a two-hour delay, and an early dismissal.
This is an independent forecast, not an official announcement. Confirm any closure with Catholic Independent Schools of Vancouver Archdiocese before acting on it.