Dufferin Hill has warmer summer afternoons than 91% of Canadian towns
January mornings start at about −10.1°C. Rain or snow is most frequent in June and least in February. Frost is rarer than in 70% of Canadian towns: about 145 nights a year drop below freezing. Have the furnace checked before October to April, the months that average under 10°C.
The nearest ECCC normals location to Dufferin Hill is Toronto Buttonville (Airport), 9.8 km east, and every figure on this page is its.
A year in Dufferin Hill at a glance
Each month’s typical high and low, in °C.
What stands out about Dufferin Hill’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Dufferin Hill 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
On about 113 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
146 cm of snow in a typical year
The snow season runs November to April; January brings the most, about 40 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Dufferin Hill
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C. Homes here need less heating than 74% of Canadian towns.
Living with Dufferin Hill’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The growing season between frosts lasts about 161 days, roughly 3 May to 13 October.
For long days outdoors, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Wind chill falls below −20 on about 22 days a year: cover skin and dress in layers.
Plan shade and water for about 55 days a year above 30 on the humidex.
Thirty years of averages say little about one bad storm; Dufferin Hill’s hazards page does.
Flood & hazards →ECCC’s normals location: Toronto Buttonville (Airport)
Toronto Buttonville (Airport) is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 9.8 km east |
| 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), 20 km |
How Dufferin Hill 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 Dufferin Hill whose figures come from another normals location. No closer places have figures: these lie 16–26 km from Dufferin Hill.
Dufferin Hill 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 |
March: −25.6°C at its coldest, 26.3°C at its warmest
Year to year, January varies most (a standard deviation of 3.1°C around −6.0°C) and June least (1.2°C).
Where Dufferin Hill’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Toronto Buttonville (Airport) (the closest location with all twelve months of temperatures).
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Dufferin Hill’s climate
How warm does Dufferin Hill get in summer?
At its warmest, in July, the normal high is 27.3°C.
How cold does Dufferin Hill get in winter?
A typical January night falls to −10.1°C, the year’s low point.
How much rain and snow does Dufferin Hill get?
Rain and snow add up to about 862 mm of water a year; June brings the most (87 mm), February the least (51 mm).
How long does snow stay on the ground?
About 76 days a year have 1 cm of snow or more on the ground.
Are these figures for Dufferin Hill itself?
No. ECCC measures normals at Toronto Buttonville (Airport), not in Dufferin Hill; the page uses the nearest it has.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Dufferin Hill →
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).