Frost comes to Church-Wellesley less often than to 89% of Canadian towns
July afternoons average 27.0°C. Summer afternoons here are warmer than in 86% of Canadian towns. Temperatures cover 34°C across the year, low to high. About 104 days a year bring 1 mm of precipitation or more.
1991–2020 normals from ECCC’s Toronto (City) location, 1.4 km west.
A year in Church-Wellesley at a glance
Each month’s typical high and low, in °C.
What stands out about Church-Wellesley’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Church-Wellesley feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 101 frosts and 124 warm days a year
The frost season runs November to April, peaking in January at about 26 nights. About 14 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
About 823 mm of rain and snow a year
The most falls in June, the least in March.
Rain and snow by month
Millimetres
About 115 cm of snow a year
The snow season runs November to April; January brings the most, about 32 cm.
Snowfall by month
Centimetres
Toronto (City) publishes no full year of snowfall, so these figures come from Toronto Pearson (Airport), 20 km away.
Heating a home in Church-Wellesley
94% 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. Homes here need less heating than 90% of Canadian towns.
Living with Church-Wellesley’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plant out after about 11 April; the first frost of autumn usually arrives near 6 November, leaving roughly 208 days without frost.
For long days outdoors, May, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Summer brings about 59 days when the humidex passes 30.
What averages leave out, the floods and ice storms, is on Church-Wellesley’s hazards page.
Flood & hazards →ECCC’s normals location: Toronto (City)
Behind the 1991–2020 normals for Toronto (City) are 2 stations, which ECCC combines into one record.
| Distance from the town | 1.4 km west |
| Station altitude | 113 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Toronto Pearson (Airport), 20 km |
| Coldest reading, 1991–2020 | −25.9°C |
| Hottest reading, 1991–2020 | 38.2°C |
| Next-nearest location | Toronto (Island), 4.4 km |
How Church-Wellesley compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Ontario.
Nearby towns’ climate
Places around Church-Wellesley whose figures come from another normals location. No closer places have figures: these lie 22–29 km from Church-Wellesley.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Church-Wellesley Toronto (City) | 27.0°C | −6.7°C | 823 mm |
| Vaughan 22 km · Toronto Buttonville (Airport) | 27.3°C about the same | −10.1°C 3.4°C colder | 862 mm |
| Mississauga 24 km · Toronto Pearson (Airport) | 27.4°C about the same | −8.9°C 2.2°C colder | 807 mm |
| Pickering 29 km · Oshawa | 25.7°C 1.3°C cooler | −8.9°C 2.2°C colder | 906 mm |
Church-Wellesley 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 | −0.3°C | −6.7°C | −3.5°C | 65 mm | 32 cm |
| February | 0.6°C | −6.0°C | −2.7°C | 54 mm | 28 cm |
| March | 5.1°C | −1.8°C | 1.7°C | 53 mm | 17 cm |
| April | 11.7°C | 3.9°C | 7.8°C | 78 mm | 5 cm |
| May | 18.8°C | 10.0°C | 14.5°C | 76 mm | under 1 cm |
| June | 24.2°C | 15.3°C | 19.8°C | 82 mm | 0 cm |
| July | 27.0°C | 18.1°C | 22.5°C | 77 mm | 0 cm |
| August | 26.1°C | 17.7°C | 21.9°C | 72 mm | 0 cm |
| September | 22.0°C | 13.8°C | 17.9°C | 69 mm | 0 cm |
| October | 14.6°C | 7.7°C | 11.2°C | 69 mm | under 1 cm |
| November | 8.1°C | 2.3°C | 5.2°C | 71 mm | 9 cm |
| December | 2.6°C | −2.7°C | −0.1°C | 58 mm | 24 cm |
| Year | 13.4°C | 6.0°C | 9.7°C | 823 mm | 115 cm |
March: −23.1°C at its coldest, 25.7°C at its warmest
Year to year, January varies most (a standard deviation of 2.7°C around −3.5°C) and June least (1.2°C).
Where Church-Wellesley’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Toronto (City), the nearest location with a full year of temperatures.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- 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 Church-Wellesley’s climate
How warm does Church-Wellesley get in summer?
The year’s warmest days come in July, with highs averaging 27.0°C.
How cold does Church-Wellesley get in winter?
In January, the coldest month, the typical low is −6.7°C.
How much rain and snow does Church-Wellesley get?
Measured as water, a year brings 823 mm: 82 mm in June, the wettest month, and 53 mm in March, the driest.
Are these figures for Church-Wellesley itself?
They are the normals for Toronto (City), measured just outside Church-Wellesley itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Church-Wellesley →
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).