Humber Heights-Westmount has warmer summer afternoons than 95% of Canadian towns
January nights here settle around −8.9°C. By frosts alone, it ranks gentler than 82% of Canadian towns. Some 36°C separates winter nights from summer afternoons. The heating season runs November to April: each of those months averages under 10°C.
1991–2020 normals from ECCC’s Toronto Pearson (Airport) location, 8.8 km west.
A year in Humber Heights-Westmount at a glance
Each month’s typical high and low, in °C.
What stands out about Humber Heights-Westmount’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Humber Heights-Westmount feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
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
June brings the most rain and snow; February, the least. On about 106 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 115 cm in a normal year
Snow falls from November to April, most of all in January (about 32 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Humber Heights-Westmount
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
One degree below 18°C for one day makes one heating degree day; the year’s days are added together. A house here needs less heating than 83% of Canadian towns.
Living with Humber Heights-Westmount’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Seedlings can go out once the average last frost, around 27 April, has passed; autumn’s first, near 20 October, ends a season of about 174 days.
For long days outdoors, May, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 21 days a year.
Summer brings about 56 days when the humidex passes 30.
Thirty years of averages say little about one bad storm; Humber Heights-Westmount’s hazards page does.
Flood & hazards →ECCC’s normals location: Toronto Pearson (Airport)
Behind the 1991–2020 normals for Toronto Pearson (Airport) are 2 stations, which ECCC combines into one record.
| Distance from the town | 8.8 km west |
| 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), 10 km |
How Humber Heights-Westmount 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
Places around Humber Heights-Westmount whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Humber Heights-Westmount Toronto Pearson (Airport) | 27.4°C | −8.9°C | 807 mm |
| Weston 1.1 km · Toronto Pearson (Airport) | 27.4°C about the same | −8.9°C about the same | 807 mm |
| Mount Dennis 2.1 km · Toronto (City) | 27.0°C about the same | −6.7°C 2.2°C milder | 823 mm |
Humber Heights-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 | −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 |
Two years in three, January’s average lands within 3.0°C of normal, against the steadier June
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −24.7°C in 2003 to 26.0°C in 2012.
Where Humber Heights-Westmount’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Toronto Pearson (Airport), its nearest location with complete temperatures.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Humber Heights-Westmount’s climate
How warm does Humber Heights-Westmount get in summer?
In July, the warmest month, the typical high is 27.4°C.
How cold does Humber Heights-Westmount get in winter?
A typical January night falls to −8.9°C, the year’s low point.
How much rain and snow does Humber Heights-Westmount 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?
Around 69 days a year see 1 cm of snow or more lying.
Are these figures for Humber Heights-Westmount itself?
Nearly: Toronto Pearson (Airport), the location behind them, sits just beyond Humber Heights-Westmount’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Humber Heights-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).