Spring Snowstorm to Bring Up to 20 cm of Snow

After a stretch of spring-like weather, Southern Ontario is bracing for a significant spring snowstorm. Starting late Sunday and continuing into Monday, a weather system will move across the region, bringing heavy snow, mixed precipitation, and strong winds. The most affected areas could receive up to 20 cm of snow, with the heaviest accumulation expected around Georgian Bay and the Bruce Peninsula.

What to Expect: Timing and Weather Details

Snow Begins Late Sunday

The storm is set to arrive Sunday evening. Precipitation will first hit Southwestern Ontario, spreading northeast overnight.

Windsor, Chatham, Sarnia, Niagara: Mostly rain or a short period of snow, then rain.
London, Kitchener, Goderich: Extended snowfall, with possible freezing rain or ice pellets.
Georgian Bay region: Heavier snow due to lake enhancement.

Monday Morning Commute Affected

Snow will intensify in Central and Eastern Ontario by early Monday. Accumulation on roads may stay low due to rising overnight temperatures, but visibility will be reduced.

Ottawa Valley and areas north of Lake Ontario: Several hours of snowfall possible.
School bus cancellations may occur in rural zones.

Wind and Visibility Concerns

Winds will strengthen Monday, with gusts between 50 to 70 km/h. Blowing snow may affect:

Grey-Bruce
Parry Sound
Northern Simcoe County

Snowfall Totals by Region

10–20 cm Expected In:

Bruce Peninsula
Northeast Georgian Bay
Tobermory, Sudbury, Parry Sound, North Bay, Huntsville

These regions may see localized totals above 20 cm due to lake-effect snow lasting into Monday night.

5–10 cm Expected In:

Kitchener
Hanover
Owen Sound
Collingwood
Midland
Orillia
Bracebridge
Bancroft

Some spots near Lake Huron could exceed 10 cm if lake enhancement persists.

Under 5 cm Expected In:

Ottawa Valley
Golden Horseshoe (away from lakeshores)
Southwestern Ontario

Mixed precipitation will limit snow accumulation in these areas.

Impact Beyond Monday

Lingering Snow Into Tuesday

Lake-effect snow will continue around Lake Huron and Georgian Bay through Tuesday. Occasional squalls could reach:

Eastern Ontario
Greater Toronto Area (GTA)

However, these will likely bring minimal new accumulation.

Midweek Outlook: Cool and Cloudy

Tuesday: High near 1°C, 30% chance of flurries or rain.
Wednesday: Mix of sun and cloud with light snow possible.
Thursday: Slightly warmer with a high of 6°C.
Friday–Saturday: Continued cloud cover and chance of showers or freezing rain.

Key Reminders for Commuters

Plan for slippery roads and reduced visibility Monday morning.
Check local school board updates for possible delays or cancellations.
Use caution if traveling through snowbelt regions, especially near Georgian Bay.

Southern Ontario’s brief break from winter is ending with a return of snow, wind, and freezing rain. Areas north of Lake Ontario and near Georgian Bay will see the most snowfall, while Toronto and regions near the lakeshores may receive little accumulation. Drivers should prepare for a messy commute Monday and watch for updates as conditions change quickly.

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