Photo: Jfvoll · CC BY-SA 4.0Neither notably warm, cold, wet nor dry, Wellesley sits near the middle of Canadian towns
About 851 mm of rain and snow falls in a typical year; July afternoons reach 25.4°C and January nights drop to −10.7°C. Its January nights stay gentler than in 64% of Canadian towns. Temperatures cover 36°C across the year, low to high. For walks and days out, the stretch from June to September brings highs of 21–25°C.
Wellesley has no ECCC normals station of its own: every figure here comes from Elora, 29 km north-east.
A year in Wellesley at a glance
Each month’s typical high and low, in °C.
What stands out about Wellesley’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Wellesley feels like
Each season’s and each month’s usual high and low, 1991–2020.
156 frost days and 116 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. On about 8 nights a year the air falls below −20°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 851 mm a year
July brings the most rain and snow; February, the least. On about 115 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
ECCC’s Elora normals leave precipitation out; the figures here come from Kitchener/Waterloo, 30 km away.
115 cm of snow in a typical year
Snow falls from November to April, most of all in January (about 32 cm).
Snowfall by month
Centimetres
ECCC’s Elora normals leave snowfall out; the figures here come from Toronto Pearson (Airport), 91 km away.
Heating a home in Wellesley
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months. That means homes here need less heating than 66% of Canadian towns.
Living with Wellesley’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The outdoor season by the averages is Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Count on some 27 days a year when the wind makes it feel below −20.
On some 44 days a year the humidex climbs past 30.
For the weather that does damage, from ice storms to floods, see Wellesley’s hazards page.
Flood & hazards →ECCC’s normals location: Elora
Behind the 1991–2020 normals for Elora are 2 stations, which ECCC combines into one record.
| Distance from the town | 29 km north-east |
| Station altitude | 376 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Kitchener/Waterloo, 30 km |
| Snowfall from | Toronto Pearson (Airport), 91 km |
| Coldest reading, 1991–2020 | −31.2°C |
| Hottest reading, 1991–2020 | 34.8°C |
| Average wind | 14.2 km/h on average, most often from the west |
| Next-nearest location | Kitchener/Waterloo, 30 km |
How Wellesley 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
Places around Wellesley whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Wellesley Elora | 25.4°C | −10.7°C | 851 mm |
| New Hamburg 15 km · Kitchener/Waterloo | 26.6°C 1.2°C warmer | −10.3°C about the same | 851 mm |
| Perth East 17 km · Elora | 25.4°C about the same | −10.7°C about the same | 851 mm |
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 | −3.1°C | −10.7°C | −6.9°C | 66 mm | 32 cm |
| February | −2.4°C | −11.0°C | −6.7°C | 46 mm | 28 cm |
| March | 3.1°C | −6.0°C | −1.5°C | 57 mm | 17 cm |
| April | 10.9°C | 0.3°C | 5.6°C | 81 mm | 5 cm |
| May | 18.3°C | 6.3°C | 12.3°C | 80 mm | under 1 cm |
| June | 23.2°C | 11.4°C | 17.3°C | 81 mm | 0 cm |
| July | 25.4°C | 13.5°C | 19.5°C | 96 mm | 0 cm |
| August | 24.6°C | 12.6°C | 18.6°C | 67 mm | 0 cm |
| September | 21.0°C | 8.9°C | 15.0°C | 75 mm | 0 cm |
| October | 13.4°C | 3.4°C | 8.5°C | 71 mm | under 1 cm |
| November | 6.2°C | −1.5°C | 2.4°C | 75 mm | 9 cm |
| December | 0.0°C | −6.3°C | −3.3°C | 55 mm | 24 cm |
| Year | 11.7°C | 1.8°C | 6.7°C | 851 mm | 115 cm |
February varies most from one year to the next (3.1°C), June least
Over 1991–2020, March saw both −27.5°C (2003) and 26.4°C (2012), the widest span of any month.
Where Wellesley’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Elora from ECCC’s climate data site, the nearest location with every month of temperature.
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- 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 Wellesley’s climate
How warm does Wellesley get in summer?
Afternoons average 25.4°C in July, the warmest time of year.
How cold does Wellesley get in winter?
Of all twelve months, February has the coldest nights, about −11.0°C.
How much rain and snow does Wellesley get?
Count on roughly 851 mm a year, heaviest in July (96 mm) and lightest in February (46 mm).
Are these figures for Wellesley itself?
Not directly: Wellesley has no ECCC normals of its own, and Elora stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for 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).