Cambridge Snow Day Predictor & Calculator
Will WRDSB close schools tomorrow?
Cambridge is the third city in Waterloo Region, served by the Waterloo Region District School Board (WRDSB) alongside Kitchener and Waterloo. WRDSB makes one closure decision for all of Waterloo Region simultaneously — when there is a snow day in Cambridge, Kitchener and Waterloo schools close at exactly the same time. Our snow day predictor Cambridge Ontario parents rely on is calibrated to WRDSB's closure threshold, updated hourly with Environment Canada data.
Cambridge sits at the southern tip of Waterloo Region near Highway 401. Alberta clippers and freezing rain events are the primary WRDSB closure triggers. The cambridge snow day predictor scores nine variables — including rural route conditions in Woolwich and Wellesley townships that drive board-wide closures even when Cambridge city roads are clear.
WRDSB Announcement Window
By 6:00 AM
Check STSWR bus cancellations at stswr.ca before 6am — a region-wide cancellation almost always precedes the official WRDSB closure announcement. Check our predictor at 9pm the night before for the earliest read.
How WRDSB Snow Day Decisions Work for Cambridge Schools
Cambridge follows WRDSB — understanding the board is key to understanding Cambridge snow days.
Cambridge Closes With All of Waterloo Region
WRDSB makes a single closure decision for all 120 schools across Waterloo Region — Cambridge, Kitchener, Waterloo, Woolwich, Wellesley, and Wilmot close simultaneously. There is no Cambridge-specific decision. When cambridge schools snow day announcements go out, the entire region is affected at once.
Bus Cancellation Is the Key Signal
Student Transportation Services of Waterloo Region (STSWR) operates school buses across all of Waterloo Region. A region-wide STSWR cancellation is the strongest predictor of a full WRDSB closure — stronger than any single weather forecast. Check stswr.ca before 6am for your earliest signal.
Rural Townships Drive the Threshold
Rural routes in Woolwich Township (Elmira, St. Jacobs, Breslau), Wellesley Township, and North Dumfries receive lower plowing priority than Cambridge city streets. A storm that leaves Cambridge manageable can close all 120 WRDSB schools if rural county roads are unsafe. WRDSB closes for the worst route, not the Cambridge average.
Cambridge vs Toronto: Toronto (TDSB) averages 3 to 5 closure days per year. WRDSB averages 6 days — slightly more due to rural route exposure. Cambridge city parents may be surprised by closures on days when their own streets look perfectly manageable.
Cambridge School Boards — WRDSB & WCDSB
Two school boards serve Cambridge and Waterloo Region — both almost always align on closure decisions.
Waterloo Region District School Board
WRDSB covers Cambridge, Kitchener, Waterloo, Woolwich, Wellesley, and Wilmot — one decision for all 120 schools. Rural route conditions in Woolwich and Wellesley drive the closure threshold.
Waterloo Catholic District School Board
WCDSB almost always aligns with WRDSB — both boards monitor the same STSWR bus cancellation data. Always verify at wcdsb.ca directly for Catholic school families.
WRDSB Snow Day Predictor — Woolwich, Wellesley & Waterloo Region
WRDSB makes one closure decision for all of Waterloo Region. The Cambridge predictor applies to every community in the board.
Elmira, St. Jacobs & Breslau
Woolwich Township falls under WRDSB. Rural routes through Elmira and St. Jacobs are among the lowest-priority roads for clearing in Waterloo Region — when these routes ice over, all 120 WRDSB schools close simultaneously.
Wellesley & Hawkesville
Wellesley Township falls under WRDSB. County Road 5 through Wellesley and Hawkesville is a primary bus corridor — icing on this route frequently triggers region-wide STSWR cancellations that force full WRDSB closures.
Ayr & Glen Morris
North Dumfries Township falls under WRDSB. Ayr and Glen Morris sit south of Cambridge near Highway 401 — exposed to Alberta clippers and freezing rain tracking northeast. Rural routes here are assessed as part of the same STSWR cancellation decision.
Verify Here When the Announcement Drops
WRDSB announces by 6:00 AM. Always verify from official sources before deciding.
Cambridge WRDSB Snow Day History
What actually closed Cambridge schools — WRDSB closure events and triggers.
Alberta clipper produced 22cm across Waterloo Region in 18 hours. WRDSB and WCDSB both closed. Highway 401 near Cambridge reduced to two lanes. STSWR cancelled all routes including Cambridge city buses.
Freezing rain deposited 6mm across Waterloo Region overnight. WRDSB closed while Cambridge city roads remained drivable. Rural routes in Woolwich and Wellesley were declared unsafe by 4am — a clear example of how rural conditions drive Cambridge closures.
18cm on February 12 followed by freezing rain on February 13. WRDSB closed both days — one of the few back-to-back closure events in Waterloo Region in the past decade.
Is It a Snow Day in Cambridge Today?
Check the probability gauge at the top of this page for today's WRDSB snow day status. The predictor updates every 30 minutes from live Environment Canada data. If you are checking after 6:00 AM on a storm morning, go directly to wrdsb.ca or @wrdsb on Twitter. 570 NEWS AM broadcasts WRDSB closures from 6:00 AM.
Will There Be a Snow Day Tomorrow in Cambridge Ontario?
Check at 9pm tonight for the best early read on tomorrow's snow day predictor Cambridge Ontario probability. WRDSB's closure decision is driven heavily by the overnight STSWR bus assessment — check stswr.ca alongside the weather forecast. Scores above 65% at 9pm combined with a STSWR cancellation signal have a strong hit rate for Cambridge WRDSB closures.
Cambridge Snow Day Calculator — What Are the Chances?
The Cambridge snow day calculator scores nine variables — overnight accumulation, precipitation type, storm timing, freezing rain risk, STSWR bus cancellation signals, rural route conditions in Woolwich and Wellesley, and WRDSB's historical closure threshold. WRDSB averages 6 closures per year — more likely than Toronto, less likely than Barrie or Ottawa.
Cambridge Road Conditions
Highway 401 · Highway 24 · Waterloo Region Roads
Highway 401 through Cambridge and Highway 24 north toward Kitchener are the key corridors monitored by STSWR and WRDSB assessors. Rural county roads in Woolwich and Wellesley townships — not Cambridge city roads — are the primary closure trigger. When rural routes show unsafe conditions on 511on.ca alongside a STSWR cancellation, a full WRDSB closure is very likely.
What Do Cambridge Parents Think?
Will WRDSB close tomorrow? Cast your vote — resets daily at midnight.
Community vote — not a prediction. Check the probability gauge above for the algorithm-based score.
Nearby Cities — Snow Day Predictor
Snow Day FAQ — Cambridge & WRDSB
Cambridge-specific questions about WRDSB and WCDSB school closure decisions.
Is it a snow day today in Cambridge Ontario?
Check the predictor above for today's WRDSB closure probability for Cambridge. WRDSB announces by 6:00 AM — if you are checking after that on a storm morning, go directly to wrdsb.ca or @wrdsb on Twitter for the official decision.
Does Cambridge have its own school board snow day or does it follow Kitchener?
Cambridge follows WRDSB — the same board as Kitchener and Waterloo. WRDSB makes one closure decision for all of Waterloo Region simultaneously. When Cambridge schools close, Kitchener and Waterloo schools close at the same time.
What time does WRDSB announce school closures for Cambridge?
WRDSB announces by 6:00 AM. The fastest sources are Twitter @wrdsb and wrdsb.ca. 570 NEWS AM also broadcasts closure announcements from 6:00 AM. A STSWR bus cancellation at stswr.ca is your strongest early signal.
Does WCDSB close at the same time as WRDSB in Cambridge?
Almost always. Waterloo Catholic District School Board monitors the same STSWR bus cancellation data and road conditions as WRDSB. Both boards typically announce within minutes of each other. Always verify at wcdsb.ca directly for Catholic school families.
Why do Cambridge schools close even when city roads are clear?
WRDSB closes for the worst route in the region — not the average Cambridge city street. Rural routes in Woolwich Township and Wellesley Township receive lower plowing priority. When those routes are unsafe, all 120 WRDSB schools close including Cambridge.
Does the Cambridge snow day predictor also cover Kitchener and Waterloo?
Yes — Cambridge, Kitchener, Waterloo, and all Waterloo Region communities are served by WRDSB. Our predictor is calibrated to WRDSB's board-wide closure threshold. A snow day prediction for Cambridge applies equally to Kitchener and Waterloo.