Summer arrives in force in Streetsville, hotter than in 95% of Canadian towns
Midwinter brings lows of about −8.9°C. A year here swings 36°C from midwinter lows to midsummer highs. Only about 131 nights a year bring a frost, fewer than in 82% of Canadian towns. Picnics, hikes and garden evenings suit May, June, August and September, with highs of 19–26°C.
The nearest ECCC normals location to Streetsville is Toronto Pearson (Airport), 12 km north-east, and every figure on this page is its.
A year in Streetsville at a glance
Each month’s typical high and low, in °C.
What stands out about Streetsville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Streetsville feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
Frost on 131 days, 20°C on 125
Frost comes from October to April; in January almost every night freezes. Heat of 30°C or more comes on about 17 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
807 mm of precipitation in a typical year
The most falls in June, the least in February. 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
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
Snow on the ground by month
Centimetres at month’s end
Heating a home in Streetsville
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. A house here needs less heating than 83% of Canadian towns.
Living with Streetsville’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Tender plants are usually safe from around 27 April until frost returns near 20 October: about 174 days.
The outdoor season by the averages is May, Jun, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →Count on some 21 days a year when the wind makes it feel below −20.
Summer brings about 56 days when the humidex passes 30.
Bad-weather days, from blizzards to floods, get their own page for Streetsville: the 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 | 12 km north-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 (Island), 26 km |
How Streetsville 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 Streetsville whose figures come from another normals location. Streetsville has no close neighbour with figures; the nearest is 15 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Streetsville Toronto Pearson (Airport) | 27.4°C | −8.9°C | 807 mm |
| Milton 15 km · Burlington Piers | 25.5°C 1.9°C cooler | −6.3°C 2.6°C milder | 807 mm |
Streetsville 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 | −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 |
January varies most from one year to the next (3.0°C), June least
The thirty-year records stretch furthest in March: a low of −24.7°C in 2003 and a high of 26.0°C in 2012.
Where Streetsville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Toronto Pearson (Airport) from ECCC’s climate data site, the nearest location with every month of temperature.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Streetsville’s climate
How warm does Streetsville get in summer?
Afternoons average 27.4°C in July, the warmest time of year.
How cold does Streetsville get in winter?
January nights average −8.9°C, the coldest of the year.
How much rain and snow does Streetsville get?
Measured as water, a year brings 807 mm: 81 mm in June, the wettest month, and 50 mm in February, the driest.
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 69 days a year.
Are these figures for Streetsville itself?
No, the station behind them is Toronto Pearson (Airport), beyond Streetsville’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Streetsville →
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).