West Humber-Clairville has warmer summer afternoons than 95% of Canadian towns
In January the night’s low is typically −8.9°C. Frosty nights are scarcer than in 82% of Canadian towns. The seasons are far apart: from a winter night to a summer afternoon the average spans 36°C. Plan time outside for May, June, August and September, when highs sit at 19–26°C.
Environment and Climate Change Canada’s 1991–2020 normals at its Toronto Pearson (Airport) station, 6.2 km south.
A year in West Humber-Clairville at a glance
Each month’s typical high and low, in °C.
What stands out about West Humber-Clairville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in West Humber-Clairville feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 131 frosts and 125 warm days a year
The frost season runs October to April, and January freezes nearly 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
The most falls in June, the least in February. On about 106 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
115 cm of snow in a typical year
The snow season runs November to April; January brings the most, about 32 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in West Humber-Clairville
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year. By this count, homes here need less heating than 83% of Canadian towns.
Living with West Humber-Clairville’s climate
What the normals mean for a garden, a day outside and the depth of winter.
On average the last spring frost comes around 27 April and the first autumn frost around 20 October: about 174 frost-free days between.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to May, Jun, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 21 days a year.
A humidex above 30 marks about 56 days in a normal year.
Thirty years of averages say little about one bad storm; West Humber-Clairville’s hazards page does.
Flood & hazards →ECCC’s normals location: Toronto Pearson (Airport)
Toronto Pearson (Airport) is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 6.2 km south |
| 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), 18 km |
How West Humber-Clairville 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
Nearby places read from a different ECCC location (places on West Humber-Clairville’s own would show the same figures). West Humber-Clairville has few close neighbours with figures, so the list reaches 13–28 km out.
West Humber-Clairville weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and 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 |
January strays furthest from its normal year to year, by 3.0°C; June the least
March has the widest record range, −24.7°C in 2003 to 26.0°C in 2012; the tick on each bar is the month’s normal.
Where West Humber-Clairville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Toronto Pearson (Airport), the closest ECCC location with twelve months of temperature normals.
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- 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 West Humber-Clairville’s climate
How warm does West Humber-Clairville get in summer?
Midsummer means July, with afternoons near 27.4°C on a typical day.
How cold does West Humber-Clairville get in winter?
The year’s coldest nights belong to January, at about −8.9°C.
How much rain and snow does West Humber-Clairville get?
Rain and snow add up to about 807 mm of water a year; June brings the most (81 mm), February the least (50 mm).
How long does snow stay on the ground?
Roughly 69 days a year start with snow cover of 1 cm or more.
Are these figures for West Humber-Clairville itself?
Almost: ECCC’s Toronto Pearson (Airport) location, which gives these figures, lies a short way outside West Humber-Clairville.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for West Humber-Clairville →
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).