July in Mount Royal runs hotter than in 95% of Canadian towns
In January the night’s low is typically −8.9°C. Precipitation peaks in June and eases off in February. By frosts alone, it ranks gentler than 82% of Canadian towns. Expect about 131 frosty starts a year, days when the air falls to freezing.
The nearest ECCC normals location to Mount Royal is Toronto Pearson (Airport), 16 km south-east, and every figure on this page is its.
A year in Mount Royal at a glance
Each month’s typical high and low, in °C.
What stands out about Mount Royal’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Mount Royal feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 131 days, 20°C on 125
From October to April frost is routine, and in January it comes on almost every night. Some 17 days a year climb past 30°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 807 mm a year
About 106 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 115 cm in a normal year
Expect snow from November to April, with about 32 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Mount Royal
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. Homes here need less heating than 83% of Canadian towns.
Living with Mount Royal’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The frost-free stretch runs from about 27 April to about 20 October, some 174 days in a normal year.
Highs of 17–27°C with nights of 8°C or more come in May, Jun, Aug and Sep.
Parks & trails →Expect around 21 days a year when the wind chill sinks below −20.
About 56 days a year feel above 30 on the humidex.
A typical year is calm by definition; Mount Royal’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Toronto Pearson (Airport)
ECCC builds the Toronto Pearson (Airport) normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 16 km south-east |
| Station altitude | 173 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −31.0°C |
| Hottest reading, 1991–2020 | 37.9°C |
| Average wind | 15.7 km/h on average, most often from the west |
| Next-nearest location | Toronto (City), 31 km |
How Mount Royal compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Mount Royal’s would only repeat its figures. The nearest places to Mount Royal with figures are 19–28 km away.
Mount Royal weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −1.2°C | −8.9°C | −5.0°C | 62 mm | 32 cm |
| February | −0.3°C | −8.5°C | −4.4°C | 50 mm | 28 cm |
| March | 5.0°C | −3.8°C | 0.6°C | 51 mm | 17 cm |
| April | 12.0°C | 1.9°C | 7.0°C | 77 mm | 5 cm |
| May | 19.2°C | 8.2°C | 13.7°C | 78 mm | under 1 cm |
| June | 24.5°C | 13.9°C | 19.2°C | 81 mm | 0 cm |
| July | 27.4°C | 16.6°C | 22.1°C | 74 mm | 0 cm |
| August | 26.3°C | 15.8°C | 21.1°C | 69 mm | 0 cm |
| September | 22.3°C | 11.6°C | 16.9°C | 69 mm | 0 cm |
| October | 14.6°C | 5.3°C | 10.0°C | 67 mm | under 1 cm |
| November | 7.9°C | 0.2°C | 4.1°C | 72 mm | 9 cm |
| December | 1.9°C | −5.0°C | −1.6°C | 59 mm | 24 cm |
| Year | 13.3°C | 3.9°C | 8.6°C | 807 mm | 115 cm |
From −24.7°C to 26.0°C: March’s coldest and warmest days since 1991
Year to year, January varies most (a standard deviation of 3.0°C around −5.0°C) and June least (1.3°C).
Where Mount Royal’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Toronto Pearson (Airport), 1991–2020.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- Not on this page: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Mount Royal’s climate
How warm does Mount Royal get in summer?
The year’s warmest days come in July, with highs averaging 27.4°C.
How cold does Mount Royal get in winter?
At its coldest, in January, the normal low is −8.9°C.
How much rain and snow does Mount Royal get?
The year adds up to 807 mm. June is the peak month (81 mm) and February the low one (50 mm).
How long does snow stay on the ground?
Snow lies on the ground for about 69 days in a normal year.
Are these figures for Mount Royal itself?
No, the station behind them is Toronto Pearson (Airport), beyond Mount Royal’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Mount Royal →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).