July in Hurontario runs hotter than in 95% of Canadian towns
On a normal January night the air cools to about −8.9°C. Of all months, June brings the most precipitation and February the least. Frost is rarer than in 82% of Canadian towns: about 131 nights a year drop below freezing. For walks and days out, May, June, August and September bring highs of 19–26°C.
These are not Hurontario’s own readings: ECCC keeps no normals there, so the page uses Toronto Pearson (Airport), 8.2 km north.
A year in Hurontario at a glance
Each month’s typical high and low, in °C.
What stands out about Hurontario’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Hurontario feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 131 frosts and 125 warm days a year
Frost comes from October to April; in January almost every night freezes. Some 17 days a year climb past 30°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 807 mm a year
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
Snow falls from November to April, most of all in January (about 32 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Hurontario
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Degree days add up how far each day’s mean temperature falls below 18°C over a year. In heating terms, homes need less heating than 83% of Canadian towns.
Living with Hurontario’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Tender plants are usually safe from around 27 April until frost returns near 20 October: about 174 days.
For long days outdoors, May, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Wind chill falls below −20 on about 21 days a year: cover skin and dress in layers.
Count on some 56 humid days a year with the humidex past 30.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Hurontario’s hazards page.
Flood & hazards →ECCC’s normals location: Toronto Pearson (Airport)
ECCC builds the Toronto Pearson (Airport) normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 8.2 km north |
| 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 (Island), 21 km |
How Hurontario 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
The nearest places on a normals location of their own: those that share Hurontario’s would only repeat its figures. Hurontario has few close neighbours with figures, so the list reaches 17–27 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Hurontario Toronto Pearson (Airport) | 27.4°C | −8.9°C | 807 mm |
| Oakville 17 km · Burlington Piers | 25.5°C 1.9°C cooler | −6.3°C 2.6°C milder | 807 mm |
| Toronto 25 km · Toronto (City) | 27.0°C about the same | −6.7°C 2.2°C milder | 823 mm |
| Vaughan 27 km · Toronto Buttonville (Airport) | 27.3°C about the same | −10.1°C 1.2°C colder | 862 mm |
Hurontario weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and 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 |
March: −24.7°C at its coldest, 26.0°C at its warmest
Year to year, January varies most (a standard deviation of 3.0°C around −5.0°C) and June least (1.3°C).
Where Hurontario’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Toronto Pearson (Airport), the nearest location with a full year of temperatures.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Hurontario’s climate
How warm does Hurontario get in summer?
Peak warmth comes in July, at about 27.4°C by mid-afternoon.
How cold does Hurontario get in winter?
A typical January night falls to −8.9°C, the year’s low point.
How much rain and snow does Hurontario get?
Rain and snow add up to about 807 mm of water a year; June brings the most (81 mm), February the least (50 mm).
How long does snow stay on the ground?
In a normal winter there are about 69 days with at least 1 cm of snow lying.
Are these figures for Hurontario itself?
No. ECCC measures normals at Toronto Pearson (Airport), not in Hurontario; the page uses the nearest it has.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Hurontario →
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).