July in DT Core runs hotter than in 95% of Canadian towns
January nights here settle around −8.9°C. The seasons are far apart: from a winter night to a summer afternoon the average spans 36°C. By frosts alone, it ranks gentler than 82% of Canadian towns. Heating does most of its work from November to April, in months below 10°C on average.
No ECCC station in DT Core has 1991–2020 normals; the page reads Toronto Pearson (Airport), 10 km north, instead.
A year in DT Core at a glance
Each month’s typical high and low, in °C.
What stands out about DT Core’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in DT Core feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
131 frost days and 125 days above 20°C a year
From October to April frost is routine, and in January it comes on almost every night. About 17 days a year top 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. Some 106 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 115 cm in a normal 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 DT Core
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Heating degree days total each day’s gap between its mean temperature and 18°C. A house here needs less heating than 83% of Canadian towns.
Living with DT Core’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Between the last frost, near 27 April, and the first, near 20 October, lie about 174 frost-free 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 →Roughly 21 days a year feel colder than −20 in the wind.
About 56 days a year feel above 30 on the humidex.
For the weather that does damage, from ice storms to floods, see DT Core’s hazards page.
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 | 10 km north |
| 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 (Island), 20 km |
How DT Core 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 DT Core’s own would show the same figures). The nearest places to DT Core with figures are 16–29 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| DT Core Toronto Pearson (Airport) | 27.4°C | −8.9°C | 807 mm |
| Oakville 16 km · Burlington Piers | 25.5°C 1.9°C cooler | −6.3°C 2.6°C milder | 807 mm |
| Toronto 25 km · Toronto (City) | 27.0°C about the same | −6.7°C 2.2°C milder | 823 mm |
| Vaughan 29 km · Toronto Buttonville (Airport) | 27.3°C about the same | −10.1°C 1.2°C colder | 862 mm |
DT Core weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the 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 |
Two years in three, January’s average lands within 3.0°C of normal, against the steadier June
The thirty-year records stretch furthest in March: a low of −24.7°C in 2003 and a high of 26.0°C in 2012.
Where DT Core’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Toronto Pearson (Airport) (the closest location with all twelve months of temperatures).
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 DT Core’s climate
How warm does DT Core get in summer?
The warmest month is July, when afternoons average 27.4°C.
How cold does DT Core get in winter?
Deep winter means January, when nights average −8.9°C.
How much rain and snow does DT Core get?
The yearly total is about 807 mm. June gets 81 mm, the most of any month; February gets 50 mm, the least.
How long does snow stay on the ground?
Snow lies on the ground for about 69 days in a normal year.
Are these figures for DT Core itself?
They describe Toronto Pearson (Airport), the nearest normals location, rather than DT Core itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for DT Core →
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).