15-Day Weather Forecast - Montreal
15-day weather forecast for Montreal: temperatures from 4°C (39°F) to 22°C (72°F). Average daily high 17°C (63°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Montreal's 15-day outlook ranges from a low of 4°C to a high of 22°C, with an average daytime high near 17°C. That's 6° below the long-term average high of 23°C for this time of year. It continues a recent pattern — 6 of the last 28 days with published data have run cooler than normal. Air quality is currently Moderate (AQI 53), driven mainly by PM2.5 at 9.1 μg/m³.
Today vs Normal
The long-term average high for today is 23°C.
6 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running below normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Extended Outlook for Montreal
Over the next 15 days, Montreal is forecast to see temperatures ranging from 3°C to 22°C, averaging a daily high of 17°C. The extended outlook indicates significant rainfall totalling 47.3 mm spread across 9 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.