Summers, winters, rain and snow in Westmount all run close to those of most Canadian towns
July afternoons reach 26.6°C on a typical day and January nights drop to −10.3°C; 851 mm of rain and melted snow falls in a year. Winter and summer sit 37°C apart. Summer afternoons here are warmer than in 70% of Canadian towns. Frost comes on about 156 days a year, so leave time to clear the car.
Environment and Climate Change Canada’s 1991–2020 normals at its Kitchener/Waterloo station, 12 km east.
A year in Westmount at a glance
Each month’s typical high and low, in °C.
What stands out about Westmount’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Westmount feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 156 days, 20°C on 122
Frost comes from October to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 7 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 851 mm of rain and snow a year
July brings the most rain and snow; February, the least. Some 115 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Snowfall: about 115 cm in a normal year
From November to April snow is likely; January is the peak, at about 32 cm.
Snowfall by month
Centimetres
ECCC’s Kitchener/Waterloo normals leave snowfall out; the figures here come from Toronto Pearson (Airport), 77 km away.
Heating a home in Westmount
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C. That means homes here need less heating than 69% of Canadian towns.
Living with Westmount’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Tender plants are usually safe from around 8 May until frost returns near 5 October: about 149 days.
The outdoor season by the averages is Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Thirty-year normals hide the storms and the extremes: the hazards page has Westmount’s risks.
Flood & hazards →ECCC’s normals location: Kitchener/Waterloo
ECCC builds the Kitchener/Waterloo normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 12 km east |
| Station altitude | 322 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Toronto Pearson (Airport), 77 km |
| Coldest reading, 1991–2020 | −34.1°C |
| Hottest reading, 1991–2020 | 36.5°C |
| Average wind | 13.8 km/h on average, most often from the west |
| Next-nearest location | Elora, 24 km |
How Westmount compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Westmount’s own would show the same figures). No closer place has figures: this one lies 11 km from Westmount.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Westmount Kitchener/Waterloo | 26.6°C | −10.3°C | 851 mm |
| Elmira 11 km · Elora | 25.4°C 1.2°C cooler | −10.7°C about the same | 851 mm |
Westmount weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −2.3°C | −10.3°C | −6.3°C | 66 mm | 32 cm |
| February | −1.4°C | −10.3°C | −5.9°C | 46 mm | 28 cm |
| March | 4.1°C | −5.6°C | −0.8°C | 57 mm | 17 cm |
| April | 11.6°C | 0.1°C | 5.9°C | 81 mm | 5 cm |
| May | 19.0°C | 6.2°C | 12.6°C | 80 mm | under 1 cm |
| June | 24.1°C | 11.5°C | 17.8°C | 81 mm | 0 cm |
| July | 26.6°C | 13.7°C | 20.2°C | 96 mm | 0 cm |
| August | 25.5°C | 12.7°C | 19.1°C | 67 mm | 0 cm |
| September | 21.6°C | 8.7°C | 15.2°C | 75 mm | 0 cm |
| October | 14.1°C | 3.4°C | 8.8°C | 71 mm | under 1 cm |
| November | 6.8°C | −1.6°C | 2.6°C | 75 mm | 9 cm |
| December | 0.7°C | −6.3°C | −2.8°C | 55 mm | 24 cm |
| Year | 12.5°C | 1.9°C | 7.2°C | 851 mm | 115 cm |
March has run from −29.4°C to 26.5°C in thirty years
The month to count on least is February: one year in three its average strays more than 3.1°C from −5.9°C. June moves least, typically by 1.1°C.
Where Westmount’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Kitchener/Waterloo (the closest location with all twelve months of temperatures).
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest location.
- 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 Westmount’s climate
How warm does Westmount get in summer?
A normal July afternoon tops out at about 26.6°C, the year’s high point.
How cold does Westmount get in winter?
At its coldest, in January, the normal low is −10.3°C.
How much rain and snow does Westmount get?
Some 851 mm falls in a year. Most of it comes in July (96 mm), the least in February (46 mm).
Are these figures for Westmount itself?
Almost: ECCC’s Kitchener/Waterloo location, which gives these figures, lies a short way outside Westmount.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Westmount →
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).