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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
A weather warning is an urgent alert issued by Environment and Climate Change Canada when hazardous conditions—such as heavy snow, freezing rain, extreme cold, or high winds—are imminent or occurring. These warnings are location-specific and require immediate action to protect safety, especially during the peak winter season from November through April.
What Should You Do When a Weather Warning is Issued?
Stay indoors if possible and postpone non-essential travel. Check local forecasts for updates, and ensure your vehicle is winter-ready with an emergency kit. For those planning March Break trips, monitor Canada weather warnings today before heading to ski hills or southern destinations. In southern Ontario, a southern Ontario weather warning today often means rapidly changing road conditions.
When Do Weather Warnings Typically Occur in Canada?
Winter weather warnings are most common from November to March, with January and February bringing the coldest alerts. Spring thaw and fall storms also trigger rainfall and wind warnings. Snowbirds travelling to warmer climates should check Canada’s weather hub for departure-day conditions, while those in Ottawa or Toronto should follow weather warning Ottawa and weather warning Toronto updates closely during storm events.
What is the difference between a watch and a warning?
A watch means conditions are possible within 24–48 hours; a warning means hazardous weather is imminent or occurring. Always treat a warning as an immediate call to action, especially during ottawa weather warning today or weather warning today events.
How are weather warnings categorized?
Environment Canada uses colour-coded alerts (e.g., red for warnings, yellow for watches). Severity depends on expected intensity and impact. For example, a blizzard warning triggers when winds exceed 40 km/h and visibility drops below 400 metres in snow.
Can I get weather warnings on my phone?
Yes—enable alerts on the WeatherCAN app (official Environment Canada app) or sign up for local notification systems. Many smartphone weather apps also push canada weather warnings today for your saved locations.