Afternoon heat in Petite-Côte beats that of 78% of Canadian towns
On a normal January night the air cools to about −13.5°C. Precipitation is plentiful here, more than falls on 74% of Canadian towns. October is the wettest month, February the driest. Ice scrapers and block heaters earn their keep on roughly 146 days a year at 0°C or below.
Read at Montréal Trudeau (Airport), 17 km south-west: ECCC’s normals for 1991–2020.
A year in Petite-Côte at a glance
Each month’s typical high and low, in °C.
What stands out about Petite-Côte’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Petite-Côte feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
146 frost days and 121 days above 20°C a year
From October to April frost is routine, and in January it comes on almost every night. Some 12 nights a year drop under −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
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
217 cm of snow in a typical year
Expect snow from October to April, with about 52 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 Petite-Côte
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. Homes here need less heating than 62% of Canadian towns.
Living with Petite-Côte’s climate
What the normals mean for a garden, a day outside and the depth of winter.
A normal year gives the garden about 167 frost-free days, roughly 29 April to 14 October.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: May, Jun, Jul, Aug and Sep.
Parks & trails →Plan for about 40 days a year with a wind chill below −20.
Humid summer days, the humidex above 30, number about 50 a year.
Thirty-year normals hide the storms and the extremes: the hazards page has Petite-Côte’s risks.
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 | 17 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'Assomption, 31 km |
How Petite-Côte 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 Quebec.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Petite-Côte’s would only repeat its figures. Petite-Côte has few close neighbours with figures, so the list reaches 10–18 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Petite-Côte Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Montréal-Est 10 km · L'Assomption | 26.6°C about the same | −16.0°C 2.5°C colder | 1,041 mm |
| Brossard 13 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Petite-Côte 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 |
In March, anything from −26.9°C to 25.8°C
Two years in three, January’s average falls within 3.0°C of its normal of −9.2°C; June keeps to within 1.1°C.
Where Petite-Côte’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Montréal Trudeau (Airport): the nearest of its locations with every month’s 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, 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 Petite-Côte’s climate
How warm does Petite-Côte get in summer?
Afternoons average 26.7°C in July, the warmest time of year.
How cold does Petite-Côte get in winter?
Expect nights around −13.5°C in January; no month is colder.
How much rain and snow does Petite-Côte get?
A normal year brings 1,041 mm, snow included as water: October is wettest at 103 mm, February driest at 66 mm.
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 101 days a year.
Are these figures for Petite-Côte itself?
Almost: ECCC’s Montréal Trudeau (Airport) location, which gives these figures, lies a short way outside Petite-Côte.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Petite-Côte →
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).