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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Environment and Climate Change Canada has issued a snowfall warning for Ottawa, with 15 to 25 centimetres expected through Tuesday morning. The capital region, straddling the Ottawa River and neighbouring Gatineau, faces a classic late-winter storm that will affect commuters heading into the city from the surrounding countryside.
What is the current weather warning for Ottawa?
A winter storm warning remains in effect for Ottawa and the broader National Capital Region. Heavy snow arriving Monday evening will intensify overnight, making travel hazardous on major routes such as the Queensway and Highway 417. The system brings a sharp temperature drop Tuesday afternoon, turning any slush into ice.
How should residents prepare for the ottawa storm today?
If you are driving into Ottawa today, consider delaying travel until the snow tapers off midday Tuesday. Keep an emergency kit in your vehicle and allow extra time for slower plows. Side streets and suburban areas near the Rideau River and the Ottawa River shoreline often see deeper drifts, so check your neighbourhood’s clearing schedule.
Is this snowfall warning ottawa likely to be upgraded to a blizzard warning?
No. The storm lacks the sustained winds needed for a blizzard, though gusts near 40 km/h may cause blowing snow late Monday. Environment Canada will keep the snowfall warning unless conditions worsen.
What does the ottawa weather warning tomorrow look like?
By Wednesday the warning will be lifted, but lingering flurries and falling temperatures could create icy patches. The ottawa weather warning tomorrow will likely shift to a flash-freeze or extreme-cold statement.
How does this compare to the storm earlier this month?
The March 10 system delivered 30 cm; this one is smaller but arrives during a higher-traffic window. Residents near the Ottawa River floodplain may also see minor freeze-up issues.
Sources
For a broader view of active alerts across the country, visit our Canada weather hub, or read more about winter storm warnings and how Canada issues warnings.