Climate in Pierrefonds-Ouest · ECCC 1991–2020 normals

Afternoon heat in Pierrefonds-Ouest beats that of 78% of Canadian towns

January nights here settle around −13.5°C. Precipitation is plentiful here, more than falls on 74% of Canadian towns. Winter and summer sit 40°C apart. Picnics, hikes and garden evenings come into their own from May to September, with highs of 19–27°C.

July afternoons: warmer than 78% of Canadian towns

January nights: milder than 51% of Canadian towns

Rain and snow a year: wetter than 74% of Canadian towns

Figures: ECCC’s 1991–2020 normals for Montréal Trudeau (Airport) (9.8 km east).

July high

26.7°C

Typical Canadian town 25.5°C

January low

−13.5°C

Typical Canadian town −13.5°C

Rain & snow a year

1,041 mm

Typical Canadian town 883 mm

Snowfall a year

217 cm

Typical Canadian town 141 cm

Frost days

146

a year at 0°C or below

Frost-free days

167

29 Apr to 14 Oct

A year in Pierrefonds-Ouest at a glance

Each month’s typical high and low, in °C.

Jan−5°C−14°CColdest nightsSnowiest

Feb−3°C−12°C

Mar2°C−7°C

Apr11°C1°CLast frost ~29 Apr

May19°C8°C

Jun24°C14°C

Jul27°C17°CWarmest

Aug26°C16°C

Sep21°C11°C

Oct13°C5°CWettestFirst frost ~14 Oct

Nov now6°C−2°C

Dec−1°C−9°C

What stands out about Pierrefonds-Ouest’s climate

Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.

Snowier than 80% of Canadian townsAbout 217 cm of snow falls in a year, most of it in January.Warmer than 78% of Canadian townsJuly afternoons average 26.7°C, the warmest of the year. 4th warmest of 513 towns of 2,500+ in Quebec.Wetter than 74% of Canadian townsAbout 1,041 mm of rain and melted snow a year; October is the wettest month and February the driest.

A normal year

What a year in Pierrefonds-Ouest feels like

Each season’s and each month’s usual high and low, 1991–2020.

Winter

−3°C / −12°C

243 mm, with 147 cm of snow

Spring

11°C / 1°C

253 mm, with 52 cm of snow

Summer

26°C / 15°C

268 mm of rain and snow

Autumn

13°C / 5°C

277 mm, with 17 cm of snow: the wettest season

−20°

−10°

0°

10°

20°

30°

40°

−5°C−14°C

−3°C−12°C

2°C−7°C

11°C1°C

19°C8°C

24°C14°C

27°C17°C

26°C16°C

21°C11°C

13°C5°C

6°C−2°C

−1°C−9°C

JanFebMarAprMayJunJulAugSepOctNovDec

Best months to be outsideMayJunJulAugSepHighs of 17–27°C and nights of 8°C or more

Frost & warm days

About 146 frosts and 121 warm days a year

From October to April frost is routine, and in January it comes on almost every night. On about 12 nights a year the air falls below −20°C.

167 frost-free days · average dates, 1991–2020

29 Apr 14 Oct

JanFebMarAprMayJunJulAugSepOctNovDec

146

Frost days a year (0°C or below)

Fewer frosts than 65% of Canadian towns

Days that stay below 0°C

Nights a year below −20°C

121

Days a year above 20°C

Days a year above 30°C

Frost days by month

Average days at 0°C or below

JFMAMJJASOND

Days above 20°C by month

Average days

JFMAMJJASOND

Rain & snow

1,041 mm of precipitation in a typical year

The most falls in October, the least in February. About 122 days a year bring 1 mm or more.

1,041 mm

Rain and snow a year

Wetter than 74% of Canadian towns

818 mm

Of it as rain alone (79%)

103 mm

October, the wettest month

66 mm

February, the driest month

Rain and snow by month

Millimetres

103 mm

JFMAMJJASOND

Rain alone by month

Millimetres

102 mm

JFMAMJJASOND

Snow

Snowfall: about 217 cm in a normal year

The snow season runs October to April; January brings the most, about 52 cm.

217 cm

Snowfall a year

Snowier than 80% of Canadian towns

Days a year with 0.2 cm of snow or more

101

Days a year with 1 cm or more on the ground

11 cm

Snow on the ground at the end of January, the deepest month

Snowfall by month

Centimetres

52 cm

JFMAMJJASOND

Snow on the ground by month

Centimetres at month’s end

11 cm

JFMAMJJASOND

Heating

Heating a home in Pierrefonds-Ouest

93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.

4,281 heating degree days (below 18°C)a year, 1991–2020

2,247 growing degree days (above 5°C)a year, 1991–2020

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 62% of Canadian towns.

Living here

Living with Pierrefonds-Ouest’s climate

What the normals mean for a garden, a day outside and the depth of winter.

The garden window

On average the last spring frost comes around 29 April and the first autumn frost around 14 October: about 167 frost-free days between.

Get outside

Highs of 17–27°C with nights of 8°C or more come in May, Jun, Jul, Aug and Sep.

Parks & trails →

Wind chill

On some 40 days a year the wind chill drops past −20; mitts and a scarf earn their place.

Humidex

A humidex above 30 marks about 50 days in a normal year.

Storms and extremes

For blizzards, floods and wildfire, turn to Pierrefonds-Ouest’s hazards page.

Flood & hazards →

Weather station

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	9.8 km east
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	Lachute, 41 km

Compared with other towns

How Pierrefonds-Ouest 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.

July afternoons26.7°C

Pierrefonds-OuestMedian Canadian town

18°C20°C22°C24°C26°C28°C

Warmer than 78% of Canadian towns4th warmest of 513 towns of 2,500+ in Quebec

January nights−13.5°C

Pierrefonds-OuestMedian Canadian town

−30°C−25°C−20°C−15°C−10°C−5°C

Milder than 51% of Canadian towns

Rain and snow a year1,041 mm

Pierrefonds-OuestMedian Canadian town

05001,0001,5002,000

Wetter than 74% of Canadian towns

Snowfall a year217 cm

Pierrefonds-OuestMedian Canadian town

100200300400

Snowier than 80% of Canadian towns

Next door

Nearby towns’ climate

The nearest places on a normals location of their own: those that share Pierrefonds-Ouest’s would only repeat its figures. The nearest places to Pierrefonds-Ouest with figures are 19–29 km away.

Town	July high	January low	Rain & snow
Pierrefonds-Ouest Montréal Trudeau (Airport)	26.7°C	−13.5°C	1,041 mm
Kanesatake 19 km · Lachute	26.5°C about the same	−14.7°C 1.2°C colder	1,178 mm
Saint-Clet 29 km · St-Anicet	26.7°C about the same	−13.0°C 0.5°C milder	1,047 mm

Month by month

Pierrefonds-Ouest 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

Year to year

The most changeable month: January, give or take 3.0°C; the steadiest, June

Records from 1991 to 2020: no month spans more than March, between −26.9°C (1992) and 25.8°C (2012).

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Pierrefonds-Ouest’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: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
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 Pierrefonds-Ouest’s climate

How warm does Pierrefonds-Ouest get in summer?

July is the warmest month, with average highs of 26.7°C.

How cold does Pierrefonds-Ouest get in winter?

Midwinter means January, when a typical night reaches −13.5°C.

How much rain and snow does Pierrefonds-Ouest get?

Around 1,041 mm a year in all, from 103 mm in October down to 66 mm in February.

How long does snow stay on the ground?

Around 101 days a year see 1 cm of snow or more lying.

Are these figures for Pierrefonds-Ouest itself?

Close to it: they are ECCC’s 1991–2020 normals for Montréal Trudeau (Airport), just outside Pierrefonds-Ouest’s boundary.

Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Pierrefonds-Ouest →

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).