Cambridge Snow Day Predictor — WRDSB School Closure Forecast

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Cambridge, Ontario Snow Day Predictor

Canada's most accurate snow day predictor

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Will Cambridge Schools Be Closed Tomorrow?

Cambridge is the third major city in Ontario’s Waterloo Region alongside Kitchener and Waterloo. The city sits at the confluence of the Grand River and Speed River in a valley that runs roughly northeast–southwest. Like its Waterloo Region neighbours, Cambridge is served by the Waterloo Region District School Board (WRDSB) — meaning a single board-wide closure decision covers Kitchener, Waterloo, Cambridge, and all regional townships simultaneously.

Cambridge has a slightly different snow character than Kitchener and Waterloo because of its Grand River valley position. Cold air can pool in the valley floor overnight, making road icing more severe in Cambridge’s lower areas than in higher-elevation parts of the Region. Cambridge averages approximately 130–148 cm of snow per year, similar to its Waterloo Region neighbours.

School Boards We Cover for Cambridge

  • Waterloo Region District School Board (WRDSB) — Covers Cambridge, Kitchener, Waterloo and all of Waterloo Region. Over 65,000 students across 100+ schools. wrdsb.ca | Announces: by 6:30 AM | Radio: 570 CKGL News, CTV Kitchener | Twitter/X: @WR_DSB
  • Waterloo Catholic District School Board (WCDSB) — Catholic schools throughout Waterloo Region including Cambridge. wcdsb.ca

Cambridge’s Valley Snow Dynamic

Cambridge’s Grand River valley setting creates localised weather characteristics that can differ from the rest of Waterloo Region. Cold air drains into the valley overnight — a process called cold air pooling — which means Cambridge’s river valley areas can be 3–5°C colder than Kitchener or Waterloo on calm, clear nights. This makes freezing rain events particularly dangerous in Cambridge: precipitation that falls as cold rain in Kitchener may arrive as freezing rain or drizzle in Cambridge’s colder valley floor, creating icy road conditions concentrated in specific parts of the city.

Cambridge also benefits from Lake Huron lake-effect enhancement when wind flows from the northwest. The same fetch that delivers lake-effect snow to Kitchener and Waterloo affects Cambridge, though the southern position of Cambridge means it can sometimes lie just outside the core of a lake-effect band. Our predictor accounts for Cambridge’s valley position in its local calibration.

WRDSB Snow Day Statistics for Cambridge Area

WRDSB averages 4–7 closure days per year across the region. Cambridge-specific conditions (valley icing, cold air pooling) can sometimes make Cambridge roads more hazardous than Kitchener streets even in the same weather event. However, since it is one board-wide decision, the Cambridge experience is captured in WRDSB’s overall closure pattern rather than a separate Cambridge threshold.

When Does WRDSB Announce?

By 6:30 AM via wrdsb.ca and Twitter/X @WR_DSB. Cambridge families receive the same SchoolMessenger notification as all WRDSB families. CTV Kitchener and 570 CKGL News are the primary media channels.

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Frequently Asked Questions — Cambridge Snow Days

Does Cambridge use a different predictor than Kitchener?

Cambridge and Kitchener are both in the WRDSB, but our predictor does calibrate local weather data separately for Cambridge to account for valley effects. When you enter Cambridge specifically, the weather data is pulled for Cambridge’s coordinates — which reflects the valley’s colder baseline and different lake-effect band positioning relative to Kitchener’s slightly more elevated terrain.

Can Cambridge close while Kitchener stays open?

Not under the current board structure — WRDSB makes one decision for the entire region. However, Cambridge-specific conditions (severe valley icing, cold air pooling) can be the driving factor that tips a borderline decision toward closure for the whole region.