Photo: Bernard Gagnon · CC BY-SA 3.0

Climate in Saint-Henri · ECCC 1991–2020 normals

Summer arrives in force in Saint-Henri, hotter than in 78% of Canadian towns

January nights here settle around −13.5°C. Its yearly rain and snow top those of 74% of Canadian towns. Rain or snow is most frequent in October and least in February. Windshields need scraping on about 146 mornings a year, the days the air reaches 0°C or below.

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

Environment and Climate Change Canada’s 1991–2020 normals at its Montréal Trudeau (Airport) station, 13 km west.

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 Saint-Henri 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 Saint-Henri’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 Saint-Henri feels like

Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.

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

Frost on 146 days, 20°C on 121

Frost comes from October to April; in January almost every night freezes. Deep cold, under −20°C, comes on about 12 nights a year.

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

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

217 cm of snow in a typical year

Expect snow from October to April, with about 52 cm in January, the snowiest month.

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 Saint-Henri

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

Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months. In heating terms, homes need less heating than 62% of Canadian towns.

Living here

Living with Saint-Henri’s climate

Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.

The garden window

Plant out after about 29 April; the first frost of autumn usually arrives near 14 October, leaving roughly 167 days without frost.

Get outside

The outdoor season by the averages is May, Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.

Parks & trails →

Wind chill

Bitter wind chill, under −20, comes on about 40 days a year.

Humidex

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

Storms and extremes

The normals describe a typical year, not its worst days; the hazards page covers Saint-Henri’s.

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	13 km 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, 28 km

Compared with other towns

How Saint-Henri compares

Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Quebec.

July afternoons26.7°C

Saint-HenriMedian 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

Saint-HenriMedian 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

Saint-HenriMedian Canadian town

05001,0001,5002,000

Wetter than 74% of Canadian towns

Snowfall a year217 cm

Saint-HenriMedian Canadian town

100200300400

Snowier than 80% of Canadian towns

Next door

Nearby towns’ climate

Places around Saint-Henri whose figures come from another normals location. No closer places have figures: these lie 10–18 km from Saint-Henri.

Town	July high	January low	Rain & snow
Saint-Henri Montréal Trudeau (Airport)	26.7°C	−13.5°C	1,041 mm
Brossard 9.8 km · L'Acadie	26.6°C about the same	−13.6°C about the same	1,041 mm
Boucherville 18 km · L'Assomption	26.6°C about the same	−16.0°C 2.5°C colder	1,041 mm

Month by month

Saint-Henri weather by month

Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.

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

March has run from −26.9°C to 25.8°C in thirty years

Year to year, January varies most (a standard deviation of 3.0°C around −9.2°C) and June least (1.1°C).

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Saint-Henri’s numbers come from

Averages over 30 years, not a forecast.

Normals: the Canadian Climate Normals, 1991–2020, at Montréal Trudeau (Airport) (the closest location with all twelve months of temperatures).
Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
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 Saint-Henri’s climate

How warm does Saint-Henri get in summer?

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

How cold does Saint-Henri get in winter?

Overnight lows average −13.5°C in January, the coldest month.

How much rain and snow does Saint-Henri 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?

The ground is white, with 1 cm or more, on some 101 days a year.

Are these figures for Saint-Henri itself?

Nearly: Montréal Trudeau (Airport), the location behind them, sits just beyond Saint-Henri’s boundary.

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

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).