Credit Valley has warmer summer afternoons than 95% of Canadian towns
January nights here settle around −8.9°C. By frosts alone, it ranks gentler than 82% of Canadian towns. Winter and summer sit 36°C apart. If you like long walks, May, June, August and September offer highs of 19–26°C.
These are not Credit Valley’s own readings: ECCC keeps no normals there, so the page uses Toronto Pearson (Airport), 14 km east.
A year in Credit Valley at a glance
Each month’s typical high and low, in °C.
What stands out about Credit Valley’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Credit Valley feels like
Each season’s and each month’s usual high and low, 1991–2020.
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
About 807 mm of rain and snow a year
June brings the most rain and snow; February, the least. 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
115 cm of snow in a typical year
Expect snow from November to April, with about 32 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Credit Valley
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
One degree below 18°C for one day makes one heating degree day; the year’s days are added together. Over a year, a home here needs less heating than 83% of Canadian towns.
Living with Credit Valley’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The growing season between frosts lasts about 174 days, roughly 27 April to 20 October.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: May, Jun, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 21 days a year.
Summer brings about 56 days when the humidex passes 30.
Thirty years of averages say little about one bad storm; Credit Valley’s hazards page does.
Flood & hazards →ECCC’s normals location: Toronto Pearson (Airport)
Behind the 1991–2020 normals for Toronto Pearson (Airport) are 2 stations, which ECCC combines into one record.
| Distance from the town | 14 km east |
| 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 (City), 32 km |
How Credit Valley 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 Credit Valley’s own would show the same figures). The nearest places to Credit Valley with figures are 18–29 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Credit Valley Toronto Pearson (Airport) | 27.4°C | −8.9°C | 807 mm |
| Milton 18 km · Burlington Piers | 25.5°C 1.9°C cooler | −6.3°C 2.6°C milder | 807 mm |
| Erin 25 km · Elora | 25.4°C 2.0°C cooler | −10.7°C 1.8°C colder | 807 mm |
| Vaughan 29 km · Toronto Buttonville (Airport) | 27.3°C about the same | −10.1°C 1.2°C colder | 862 mm |
Credit Valley 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
Over 1991–2020, March saw both −24.7°C (2003) and 26.0°C (2012), the widest span of any month.
Where Credit Valley’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Toronto Pearson (Airport), its nearest location with complete temperatures.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- Not on this page: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Credit Valley’s climate
How warm does Credit Valley get in summer?
July is the warmest month, with average highs of 27.4°C.
How cold does Credit Valley get in winter?
Lows sink to −8.9°C on an average January night.
How much rain and snow does Credit Valley get?
Around 807 mm a year in all, from 81 mm in June down to 50 mm in February.
How long does snow stay on the ground?
The ground is white, with 1 cm or more, on some 69 days a year.
Are these figures for Credit Valley itself?
No, the station behind them is Toronto Pearson (Airport), beyond Credit Valley’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Credit Valley →
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).