Home › Weather › Weather Montreal 30 Days
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Toronto Post Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Over the next 30 days, Montreal’s daytime highs will range from 5°C to 15°C, with overnight lows between -2°C and 7°C, according to ensemble guidance. This outlook is slightly cooler than the live forecast above for Toronto.
What Is the Temperature Trend for Montreal This Month?
Temperatures are expected to rise gradually, with the first half of the period near seasonal norms and the second half trending 1–2°C above average. Daytime highs will climb from the low single digits early on to the mid-teens by the final week.
How Much Precipitation Can Montreal Expect?
Total precipitation over the 30 days is forecast near normal, roughly 60–80 mm. The highest rain chances cluster around days 10–14 and 21–24, with a mix of rain and snow possible during the first week.
Is the 30-day forecast reliable?
Long-range outlooks show broad trends rather than day-by-day certainty. Skill is highest for temperature averages and precipitation totals, while exact daily timing is less reliable beyond 10–14 days.
What source should I check for daily updates?
Environment and Climate Change Canada issues official forecasts updated twice daily. For hourly details and short-term changes, the weather montreal 14 days and weather montreal 21 day products from The Weather Network are useful complements.
How does Montreal’s 30-day forecast compare to Toronto’s?
Montreal typically runs 2–4°C cooler than Toronto in spring, with more frequent frost early in the period. Toronto’s lake moderation and lower latitude keep its overnight lows higher on average.
Sources
For broader national conditions, visit the Canada weather hub or compare with Toronto Weather. For short-term precision, check weather montreal 30 days hourly updates from approved sources.