Summer afternoons in Centennial Scarborough are warmer than in 91% of Canadian towns
Midwinter brings lows of about −10.1°C. By frosts alone, it ranks gentler than 70% of Canadian towns. Precipitation peaks in June and eases off in February. The furnace earns its keep from October to April, the months that average under 10°C.
Figures: ECCC’s 1991–2020 normals for Toronto Buttonville (Airport) (20 km north-west).
A year in Centennial Scarborough at a glance
Each month’s typical high and low, in °C.
What stands out about Centennial Scarborough’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Centennial Scarborough feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
145 frost days and 126 days above 20°C a year
Frost comes from October to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 6 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 862 mm of rain and snow a year
Some 113 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
146 cm of snow in a typical year
Snow falls from November to April, most of all in January (about 40 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Centennial Scarborough
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. A house here needs less heating than 74% of Canadian towns.
Living with Centennial Scarborough’s climate
What the normals mean for a garden, a day outside and the depth of winter.
About 161 days a year pass without frost, from an average last frost of 3 May to a first of 13 October.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Aug and Sep.
Parks & trails →The wind chill passes −20 on about 22 days in a normal year.
On some 55 days a year the humidex climbs past 30.
Bad-weather days, from blizzards to floods, get their own page for Centennial Scarborough: the hazards page.
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 | 20 km north-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), 24 km |
How Centennial Scarborough 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 Centennial Scarborough’s own would show the same figures). The nearest places to Centennial Scarborough with figures are 7–28 km away.
Centennial Scarborough weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| 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 |
The most changeable month: January, give or take 3.1°C; the steadiest, June
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 Centennial Scarborough’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Toronto Buttonville (Airport): the nearest of its locations with every month’s 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 Centennial Scarborough’s climate
How warm does Centennial Scarborough get in summer?
A normal July afternoon tops out at about 27.3°C, the year’s high point.
How cold does Centennial Scarborough get in winter?
In January, the coldest month, the typical low is −10.1°C.
How much rain and snow does Centennial Scarborough get?
Precipitation totals 862 mm a year, with June the wettest month (87 mm) and February the driest (51 mm).
How long does snow stay on the ground?
On about 76 days a year the ground keeps at least 1 cm of snow.
Are these figures for Centennial Scarborough itself?
They are the normals for Toronto Buttonville (Airport), measured just outside Centennial Scarborough itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Centennial Scarborough →
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).