Buttonville has warmer summer afternoons than 91% of Canadian towns
Midwinter brings lows of about −10.1°C. Frosty nights are scarcer than in 70% of Canadian towns. Of all months, June brings the most precipitation and February the least. If you like long walks, June, August and September offer highs of 22–26°C.
Figures: ECCC’s 1991–2020 normals at Toronto Buttonville (Airport) (1.6 km south-west).
A year in Buttonville at a glance
Each month’s typical high and low, in °C.
What stands out about Buttonville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Buttonville 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. 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
About 862 mm of rain and snow a year
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
From November to April snow is likely; January is the peak, at about 40 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Buttonville
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. By this count, homes here need less heating than 74% of Canadian towns.
Living with Buttonville’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 3 May and the first autumn frost around 13 October: about 161 frost-free days between.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 22 days a year.
The air feels heavier than 30 on the humidex for about 55 days a year.
A normal year has no blizzard, flood or heat wave in it; Buttonville’s hazards page looks at those.
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 | 1.6 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), 22 km |
How Buttonville 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
Nearby places read from a different ECCC location (places on Buttonville’s own would show the same figures). Buttonville has few close neighbours with figures, so the list reaches 17–28 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Buttonville Toronto Buttonville (Airport) | 27.3°C | −10.1°C | 862 mm |
| Toronto 17 km · Toronto (City) | 27.0°C about the same | −6.7°C 3.4°C milder | 823 mm |
| Pickering 20 km · Oshawa | 25.7°C 1.6°C cooler | −8.9°C 1.2°C milder | 906 mm |
| East Gwillimbury 28 km · Udora | 26.3°C 1.0°C cooler | −11.7°C 1.6°C colder | 883 mm |
Buttonville 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 |
The month with the widest range: March, −25.6°C to 26.3°C
Bars run from each month’s record low to its record high over 1991–2020; January is the month whose average wanders most from year to year (±3.1°C around −6.0°C), June the one that wanders least (±1.2°C).
Where Buttonville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Toronto Buttonville (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest 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 Buttonville’s climate
How warm does Buttonville get in summer?
Summer peaks in July: a typical afternoon reaches 27.3°C.
How cold does Buttonville get in winter?
Lows sink to −10.1°C on an average January night.
How much rain and snow does Buttonville get?
Count on roughly 862 mm a year, heaviest in June (87 mm) and lightest in February (51 mm).
How long does snow stay on the ground?
In a normal winter there are about 76 days with at least 1 cm of snow lying.
Are these figures for Buttonville itself?
Yes, measured at Toronto Buttonville (Airport), which sits inside Buttonville’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Buttonville →
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).