Montreal weather in May
Long-run climate averages for Montreal, Quebec in May, plus what the forecast models say for the days ahead.
In May, Montreal averages 19°C by day and 8°C at night. The wettest month is usually August.
May in Montreal averages a daytime high of 19°C and an overnight low of 8°C, which reads as mild for this part of the world. Across the whole year Montreal sees roughly 1229 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Montreal forecast with every model compared and how much they currently agree.
Montreal weather by month
what to expect in Montreal through the yearHere is Montreal's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Montreal by season.