Climate Chart of Montreal, Canada

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

Climate overview

Temperature

Monthly mean temperatures reach their highest point in July, at 20.7 °C, and their lowest in January, at -10.0 °C. These are averages for each month, not daytime highs or lows, so day-to-day temperatures may differ. The unweighted mean across the monthly means is 6.0 °C; it summarizes the calendar-month averages without weighting them by the number of days in each month.

Rain

Mean daily rainfall is highest in June, at 3.97 mm/day, and lowest in January, at 0.86 mm/day. The unweighted mean of the monthly daily averages is 2.44 mm/day. These are daily mean amounts, not monthly totals; they do not indicate how often rain falls or guarantee wet or dry conditions on a particular visit.

Snow

Mean daily snowfall reaches its highest monthly value in February, at 13.30 mm/day; the unweighted mean across monthly daily averages is 4.25 mm/day. These are amounts averaged per day, not monthly totals. They do not establish how many days receive snow, snow depth or cover, or whether conditions are suitable for skiing.

Sunshine

Mean daily sunshine duration peaks in July at 11.74 hours/day, while its lowest monthly mean is in December at 4.11 hours/day. Across the calendar months, the unweighted mean of these daily averages is 7.83 hours/day. Sunshine duration can help with broad outdoor planning, but it measures average hours of sunshine rather than day length and does not promise clear conditions on any given day.

Best Travel Time Guide for Montreal, Canada: Ideal Seasons and Weather Insights

If lower average rainfall is a priority, January is the conditional option in these data, with mean daily rainfall of 0.86 mm/day; this does not guarantee dry days or show how frequently rain occurs. For rain preparation, note that June has the highest mean daily rainfall, at 3.97 mm/day, and plan for variable conditions rather than treating either monthly average as a forecast. Visitors prioritising cooler monthly averages can look to January, when the monthly mean temperature is -10.0 °C. For outdoor sightseeing planned around sunshine, July has the highest mean daily duration at 11.74 hours/day, while December has the lowest at 4.11 hours/day; sunshine hours are not day length and cannot guarantee bright weather on a specific day.

Snow preparation may be relevant around February, when mean daily snowfall is highest at 13.30 mm/day. This average alone cannot tell you how many snowy days to expect or whether snow will remain on the ground, so check current conditions close to travel.

Climate Data Overview for Montreal, Canada

Explore the comprehensive climate data for Montreal, Canada. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

• See also climate change in Montreal
• Explore the climate in Canada