Is Rosemont-Mount Royal hot in May?
Days are typically mild at 18°C, while nights average 3.4°C.
Canada · 1991–2020 normal
Typical May weather in Rosemont-Mount Royal: 18°C by day, 3.4°C at night, 49 mm of rain over 7.5 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, May scores 53 out of 100 (August leads the year at 82). Daylight is calculated as 15 h 26 from latitude 50.46°.
May at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically mild at 18°C, while nights average 3.4°C.
The measured monthly average is 49 mm across about 8 wet days.
There are about 15 h 26 between sunrise and sunset at mid-month, calculated from the place latitude.
May ranks 5 of 12 in our weather comparison; August ranks first.
The evidence behind this page
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The weather comparison for Rosemont-Mount Royal is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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