Afternoon heat in Wismer Commons beats that of 91% of Canadian towns
Deep winter brings January lows near −10.1°C. Winter and summer sit 37°C apart. Only about 145 nights a year bring a frost, fewer than in 70% of Canadian towns. Picnics, hikes and garden evenings suit June, August and September, with highs of 22–26°C.
No ECCC station in Wismer Commons has 1991–2020 normals; the page reads Toronto Buttonville (Airport), 8.2 km south-west, instead.
A year in Wismer Commons at a glance
Each month’s typical high and low, in °C.
What stands out about Wismer Commons’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Wismer Commons feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
145 frost days and 126 days above 20°C a year
Frost comes from October to May; in January almost every night freezes. Some 6 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
862 mm of precipitation in a typical year
The most falls in June, the least in February. About 113 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
146 cm of snow in a typical year
Expect snow from November to April, with about 40 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 Wismer Commons
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months. In heating terms, homes need less heating than 74% of Canadian towns.
Living with Wismer Commons’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Tender plants are usually safe from around 3 May until frost returns near 13 October: about 161 days.
The outdoor season by the averages is Jun, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Count on some 22 days a year when the wind makes it feel below −20.
Count on some 55 humid days a year with the humidex past 30.
A typical year is calm by definition; Wismer Commons’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Toronto Buttonville (Airport)
ECCC builds the Toronto Buttonville (Airport) normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 8.2 km south-west |
| Station altitude | 198 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −35.2°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 12.2 km/h on average, most often from the north |
| Next-nearest location | Toronto (City), 27 km |
How Wismer Commons compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Wismer Commons’s would only repeat its figures. Distances here run 15–27 km: that is how far the nearest places with figures are from Wismer Commons.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Wismer Commons Toronto Buttonville (Airport) | 27.3°C | −10.1°C | 862 mm |
| Pickering 15 km · Oshawa | 25.7°C 1.6°C cooler | −8.9°C 1.2°C milder | 906 mm |
| Toronto 22 km · Toronto (City) | 27.0°C about the same | −6.7°C 3.4°C milder | 823 mm |
| Uxbridge 26 km · Udora | 26.3°C 1.0°C cooler | −11.7°C 1.6°C colder | 883 mm |
Wismer Commons 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 | −1.7°C | −10.1°C | −6.0°C | 64 mm | 40 cm |
| February | −1.0°C | −10.1°C | −5.6°C | 51 mm | 34 cm |
| March | 4.6°C | −5.0°C | −0.2°C | 52 mm | 20 cm |
| April | 11.8°C | 1.2°C | 6.5°C | 79 mm | 7 cm |
| May | 19.3°C | 7.4°C | 13.4°C | 80 mm | under 1 cm |
| June | 24.6°C | 13.0°C | 18.8°C | 87 mm | 0 cm |
| July | 27.3°C | 15.6°C | 21.5°C | 85 mm | 0 cm |
| August | 26.3°C | 14.8°C | 20.6°C | 72 mm | 0 cm |
| September | 21.9°C | 10.4°C | 16.2°C | 83 mm | 0 cm |
| October | 14.3°C | 4.3°C | 9.4°C | 71 mm | 1 cm |
| November | 7.4°C | −0.8°C | 3.3°C | 77 mm | 12 cm |
| December | 1.5°C | −5.8°C | −2.2°C | 63 mm | 33 cm |
| Year | 13.0°C | 2.9°C | 8.0°C | 862 mm | 146 cm |
January varies most from one year to the next (3.1°C), June least
The thirty-year records stretch furthest in March: a low of −25.6°C in 2003 and a high of 26.3°C in 2012.
Where Wismer Commons’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Toronto Buttonville (Airport), its nearest location with complete temperatures.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Wismer Commons’s climate
How warm does Wismer Commons get in summer?
On a normal day in July the thermometer climbs to 27.3°C, the warmest of the year.
How cold does Wismer Commons get in winter?
January nights average −10.1°C, the coldest of the year.
How much rain and snow does Wismer Commons get?
Some 862 mm falls in a year. Most of it comes in June (87 mm), the least in February (51 mm).
How long does snow stay on the ground?
There is 1 cm of snow or more on the ground on roughly 76 days a year.
Are these figures for Wismer Commons itself?
Not exactly. Wismer Commons lacks a normals station, so Toronto Buttonville (Airport) supplies the figures.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Wismer Commons →
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).