Climate in Saint-Blaise-sur-Richelieu · ECCC 1991–2020 normals

Wet weather: 1,041 mm of rain and snow a year falls on Saint-Blaise-sur-Richelieu, more than on 74% of Canadian towns

The warmest part of a July day comes in at 26.6°C on average. By July afternoons alone, it runs hotter than 70% of Canadian towns. Some 40°C separates winter nights from summer afternoons. Homes need heating from October to April, the months averaging under 10°C.

July afternoons: warmer than 70% of Canadian towns

January nights: colder than 56% of Canadian towns

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

These are not Saint-Blaise-sur-Richelieu’s own readings: ECCC keeps no normals there, so the page uses L'Acadie, 12 km north-west.

July high

26.6°C

Typical Canadian town 25.5°C

January low

−13.6°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

149

a year at 0°C or below

A year in Saint-Blaise-sur-Richelieu at a glance

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

Jan−4°C−14°CColdest nightsSnowiest

Feb−3°C−13°C

Mar3°C−7°C

Apr11°C1°C

May20°C8°C

Jun24°C13°C

Jul27°C16°CWarmest

Aug25°C14°C

Sep21°C10°C

Oct14°C4°CWettest

Nov now6°C−2°C

Dec−1°C−9°C

What stands out about Saint-Blaise-sur-Richelieu’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.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-Blaise-sur-Richelieu feels like

Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.

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

25°C / 14°C

268 mm of rain and snow

Autumn

14°C / 4°C

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

−20°

−10°

0°

10°

20°

30°

40°

−4°C−14°C

−3°C−13°C

3°C−7°C

11°C1°C

20°C8°C

24°C13°C

27°C16°C

25°C14°C

21°C10°C

14°C4°C

6°C−2°C

−1°C−9°C

JanFebMarAprMayJunJulAugSepOctNovDec

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

Frost & warm days

Frost on 149 days, 20°C on 124

The frost season runs October to April, and January freezes nearly every night. On about 15 nights a year the air falls below −20°C.

149

Frost days a year (0°C or below)

Fewer frosts than 58% of Canadian towns

Days that stay below 0°C

Nights a year below −20°C

124

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

About 1,041 mm of rain and snow a year

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

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

ECCC’s L'Acadie normals leave out precipitation and snow; both come from Montréal Trudeau (Airport) here, 47 km away.

Snow

About 217 cm of snow a year

From October to April snow is likely; January is the peak, at 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

Snowfall by month

Centimetres

52 cm

JFMAMJJASOND

Heating

Heating a home in Saint-Blaise-sur-Richelieu

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

4,304 heating degree days (below 18°C)a year, 1991–2020

2,197 growing degree days (above 5°C)a year, 1991–2020

Think of it as a year’s worth of daily shortfalls below 18°C, added up.

Living here

Living with Saint-Blaise-sur-Richelieu’s climate

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

Get outside

For long days outdoors, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.

Parks & trails →

Wind chill

On some 36 days a year the wind chill drops past −20; mitts and a scarf earn their place.

Humidex

About 50 days a year feel above 30 on the humidex.

Storms and extremes

Severe weather is a separate story from the averages: see Saint-Blaise-sur-Richelieu’s hazards page.

Flood & hazards →

Weather station

ECCC’s normals location: L'Acadie

L'Acadie is one of the 450 places where ECCC publishes 1991–2020 normals.

Distance from the town	12 km north-west
Station altitude	44 m
Completeness	at least 20 years
WMO standard normals	No
Precipitation from	Montréal Trudeau (Airport), 47 km
Coldest reading, 1991–2020	−32.5°C
Hottest reading, 1991–2020	36.1°C
Average wind	11.4 km/h on average, most often from the west
Next-nearest location	Frelighsburg, 39 km

Compared with other towns

How Saint-Blaise-sur-Richelieu 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.

July afternoons26.6°C

Saint-Blaise-sur-RichelieuMedian Canadian town

18°C20°C22°C24°C26°C28°C

Warmer than 70% of Canadian towns

January nights−13.6°C

Saint-Blaise-sur-RichelieuMedian Canadian town

−30°C−25°C−20°C−15°C−10°C−5°C

Colder than 56% of Canadian towns

Rain and snow a year1,041 mm

Saint-Blaise-sur-RichelieuMedian Canadian town

05001,0001,5002,000

Wetter than 74% of Canadian towns

Snowfall a year217 cm

Saint-Blaise-sur-RichelieuMedian 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 Saint-Blaise-sur-Richelieu’s would only repeat its figures. The one place listed is 17 km from Saint-Blaise-sur-Richelieu, the nearest with figures.

Town	July high	January low	Rain & snow
Saint-Blaise-sur-Richelieu L'Acadie	26.6°C	−13.6°C	1,041 mm
Venise-en-Québec 17 km · Frelighsburg	25.6°C 1.0°C cooler	−12.9°C 0.7°C milder	1,340 mm

Month by month

Saint-Blaise-sur-Richelieu 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	−4.3°C	−13.6°C	−9.0°C	86 mm	52 cm
February	−2.9°C	−12.7°C	−7.8°C	66 mm	47 cm
March	2.6°C	−6.7°C	−2.1°C	77 mm	37 cm
April	11.1°C	0.7°C	5.9°C	90 mm	15 cm
May	19.5°C	7.8°C	13.7°C	86 mm	0 cm
June	24.2°C	13.2°C	18.7°C	84 mm	0 cm
July	26.6°C	15.5°C	21.1°C	91 mm	0 cm
August	25.3°C	13.9°C	19.6°C	94 mm	0 cm
September	21.4°C	9.7°C	15.6°C	89 mm	0 cm
October	13.6°C	4.1°C	8.9°C	103 mm	1 cm
November	6.1°C	−1.7°C	2.2°C	84 mm	16 cm
December	−0.7°C	−8.6°C	−4.7°C	92 mm	48 cm
Year	11.9°C	1.8°C	6.8°C	1,041 mm	217 cm

Year to year

March: −28.7°C at its coldest, 25.4°C at its warmest

Year to year, January varies most (a standard deviation of 2.9°C around −9.0°C) and August least (1.0°C).

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Saint-Blaise-sur-Richelieu’s numbers come from

Averages over 30 years, not a forecast.

Normals: the 1991–2020 Canadian Climate Normals at L'Acadie, the closest ECCC location with twelve months of temperature normals.
Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
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-Blaise-sur-Richelieu’s climate

How warm does Saint-Blaise-sur-Richelieu get in summer?

In July, the warmest month, the typical high is 26.6°C.

How cold does Saint-Blaise-sur-Richelieu get in winter?

Midwinter means January, when a typical night reaches −13.6°C.

How much rain and snow does Saint-Blaise-sur-Richelieu get?

Measured as water, a year brings 1,041 mm: 103 mm in October, the wettest month, and 66 mm in February, the driest.

Are these figures for Saint-Blaise-sur-Richelieu itself?

Not as such: L'Acadie is the nearest normals location, and Saint-Blaise-sur-Richelieu has none.

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

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).