Summer arrives in force in Parc-Extension, hotter than in 78% of Canadian towns
The depth of winter brings overnight lows near −13.5°C. The seasons are far apart: from a winter night to a summer afternoon the average spans 40°C. By precipitation alone, it ranks wetter than 74% of Canadian towns. Long walks are most pleasant from May to September, when afternoons reach 19–27°C.
1991–2020 normals from ECCC’s Montréal Trudeau (Airport) location, 11 km south-west.
A year in Parc-Extension at a glance
Each month’s typical high and low, in °C.
What stands out about Parc-Extension’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Parc-Extension feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 146 frosts and 121 warm days a year
The frost season runs October to April, and January freezes nearly every night. On about 12 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
1,041 mm of precipitation in a typical year
October is the wettest month and February the driest. Some 122 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 217 cm of snow a year
The snow season runs October to April; January brings the most, about 52 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Parc-Extension
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days. Over a year, a home here needs less heating than 62% of Canadian towns.
Living with Parc-Extension’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The frost-free stretch runs from about 29 April to about 14 October, some 167 days in a normal year.
Afternoons of 17–27°C and nights of at least 8°C arrive in May, Jun, Jul, Aug and Sep.
Parks & trails →Wind chill falls below −20 on about 40 days a year: cover skin and dress in layers.
A humidex above 30 marks about 50 days in a normal year.
For blizzards, floods and wildfire, turn to Parc-Extension’s hazards page.
Flood & hazards →ECCC’s normals location: Montréal Trudeau (Airport)
ECCC builds the Montréal Trudeau (Airport) normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 11 km south-west |
| Station altitude | 36 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −31.8°C |
| Hottest reading, 1991–2020 | 36.6°C |
| Average wind | 15.4 km/h on average, most often from the west |
| Next-nearest location | L'Acadie, 35 km |
How Parc-Extension compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Quebec.
Nearby towns’ climate
Places around Parc-Extension whose figures come from another normals location. Parc-Extension has few close neighbours with figures, so the list reaches 15–19 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Parc-Extension Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Montréal-Est 15 km · L'Assomption | 26.6°C about the same | −16.0°C 2.5°C colder | 1,041 mm |
| Brossard 15 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Parc-Extension 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 | −5.0°C | −13.5°C | −9.2°C | 86 mm | 52 cm |
| February | −3.4°C | −12.4°C | −8.0°C | 66 mm | 47 cm |
| March | 2.4°C | −6.5°C | −2.0°C | 77 mm | 37 cm |
| April | 11.3°C | 1.1°C | 6.2°C | 90 mm | 15 cm |
| May | 19.4°C | 8.3°C | 13.9°C | 86 mm | 0 cm |
| June | 24.2°C | 13.8°C | 19.0°C | 84 mm | 0 cm |
| July | 26.7°C | 16.7°C | 21.7°C | 91 mm | 0 cm |
| August | 25.7°C | 15.6°C | 20.6°C | 94 mm | 0 cm |
| September | 21.1°C | 10.9°C | 16.0°C | 89 mm | 0 cm |
| October | 13.2°C | 4.5°C | 8.9°C | 103 mm | 1 cm |
| November | 6.1°C | −1.7°C | 2.3°C | 84 mm | 16 cm |
| December | −1.2°C | −8.7°C | −5.0°C | 92 mm | 48 cm |
| Year | 11.7°C | 2.3°C | 7.0°C | 1,041 mm | 217 cm |
From −26.9°C to 25.8°C: March’s coldest and warmest days since 1991
Year to year, January varies most (a standard deviation of 3.0°C around −9.2°C) and June least (1.1°C).
Where Parc-Extension’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Montréal Trudeau (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 Parc-Extension’s climate
How warm does Parc-Extension get in summer?
At its warmest, in July, the normal high is 26.7°C.
How cold does Parc-Extension get in winter?
A typical January night falls to −13.5°C, the year’s low point.
How much rain and snow does Parc-Extension get?
Rain and snow add up to about 1,041 mm of water a year; October brings the most (103 mm), February the least (66 mm).
How long does snow stay on the ground?
Snow cover of 1 cm or more lasts about 101 days in a typical year.
Are these figures for Parc-Extension itself?
Nearly: Montréal Trudeau (Airport), the location behind them, sits just beyond Parc-Extension’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Parc-Extension →
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).