Frosty mornings in Forest Hill South are scarcer than in 89% of Canadian towns
On a normal July day the thermometer tops out near 27.0°C. By July afternoons alone, it runs hotter than 86% of Canadian towns. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 34°C apart. Long walks are most pleasant from May to September, when afternoons reach 19–27°C.
1991–2020 normals from ECCC’s Toronto (City) location, 2.9 km south-east.
A year in Forest Hill South at a glance
Each month’s typical high and low, in °C.
What stands out about Forest Hill South’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Forest Hill South feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 101 days, 20°C on 124
Frosts fall from November to April; January has the most, about 26. Heat of 30°C or more comes on about 14 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 823 mm a year
June brings the most rain and snow; March, the least. About 104 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
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
Snowfall: Toronto Pearson (Airport), 17 km away (Toronto (City) records no complete year of it).
Heating a home in Forest Hill South
94% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days. In heating terms, homes need less heating than 90% of Canadian towns.
Living with Forest Hill South’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Count on about 208 frost-free days: the last frost averages 11 April, the first 6 November.
Afternoons of 17–27°C and nights of at least 8°C arrive in May, Jun, Jul, Aug and Sep.
Parks & trails →A humidex above 30 marks about 59 days in a normal year.
The normals describe a typical year, not its worst days; the hazards page covers Forest Hill South’s.
Flood & hazards →ECCC’s normals location: Toronto (City)
ECCC builds the Toronto (City) normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 2.9 km south-east |
| Station altitude | 113 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Toronto Pearson (Airport), 17 km |
| Coldest reading, 1991–2020 | −25.9°C |
| Hottest reading, 1991–2020 | 38.2°C |
| Next-nearest location | Toronto (Island), 7.2 km |
How Forest Hill South 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 Forest Hill South whose figures come from another normals location. Distances here run 18–28 km: that is how far the nearest places with figures are from Forest Hill South.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Forest Hill South Toronto (City) | 27.0°C | −6.7°C | 823 mm |
| Vaughan 18 km · Toronto Buttonville (Airport) | 27.3°C about the same | −10.1°C 3.4°C colder | 862 mm |
| Mississauga 23 km · Toronto Pearson (Airport) | 27.4°C about the same | −8.9°C 2.2°C colder | 807 mm |
Forest Hill South weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| 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 has run from −23.1°C to 25.7°C in thirty years
The month to count on least is January: one year in three its average strays more than 2.7°C from −3.5°C. June moves least, typically by 1.2°C.
Where Forest Hill South’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Toronto (City), the closest ECCC location with twelve months of temperature normals.
- Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
- 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: 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 Forest Hill South’s climate
How warm does Forest Hill South get in summer?
At its warmest, in July, the normal high is 27.0°C.
How cold does Forest Hill South get in winter?
Lows sink to −6.7°C on an average January night.
How much rain and snow does Forest Hill South get?
Rain and snow add up to about 823 mm of water a year; June brings the most (82 mm), March the least (53 mm).
Are these figures for Forest Hill South itself?
They are the normals for Toronto (City), measured just outside Forest Hill South itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Forest Hill South →
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).