Climate in Sillery · ECCC 1991–2020 normals

Wet weather: 1,173 mm of rain and snow a year falls on Sillery, more than on 87% of Canadian towns

July afternoons average 25.1°C. Of all months, July brings the most precipitation and February the least. In January, nights here are colder than in 73% of Canadian towns. Frost comes on about 162 days a year, so leave time to clear the car.

July afternoons: cooler than 58% of Canadian towns

January nights: colder than 73% of Canadian towns

Rain and snow a year: wetter than 87% of Canadian towns

The nearest ECCC normals location to Sillery is Ste-Foy (U. Laval), 4.9 km west, and every figure on this page is its.

July high

25.1°C

Typical Canadian town 25.5°C

January low

−15.6°C

Typical Canadian town −13.5°C

Rain & snow a year

1,173 mm

Typical Canadian town 883 mm

Snowfall a year

299 cm

Typical Canadian town 141 cm

Frost days

162

a year at 0°C or below

A year in Sillery at a glance

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

Jan−7°C−16°CColdest nights

Feb−5°C−14°C

Mar1°C−8°C

Apr8°C−1°C

May18°C7°C

Jun23°C12°C

Jul25°C15°CWarmestWettest

Aug24°C14°C

Sep19°C9°C

Oct11°C3°C

Nov now4°C−3°C

Dec−3°C−10°CSnowiest

What stands out about Sillery’s climate

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

Snowier than 93% of Canadian townsAbout 299 cm of snow falls in a year, most of it in December.Wetter than 87% of Canadian townsAbout 1,173 mm of rain and melted snow a year; July is the wettest month and February the driest.Colder than 73% of Canadian townsJanuary nights average −15.6°C, the coldest of the year.

A normal year

What a year in Sillery feels like

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

Winter

−5°C / −13°C

249 mm, with 209 cm of snow

Spring

9°C / −1°C

264 mm, with 63 cm of snow

Summer

24°C / 13°C

342 mm of rain and snow, the wettest season

Autumn

12°C / 3°C

318 mm, with 26 cm of snow

−20°

−10°

0°

10°

20°

30°

−7°C−16°C

−5°C−14°C

1°C−8°C

8°C−1°C

18°C7°C

23°C12°C

25°C15°C

24°C14°C

19°C9°C

11°C3°C

4°C−3°C

−3°C−10°C

JanFebMarAprMayJunJulAugSepOctNovDec

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

Frost & warm days

About 162 frosts and 101 warm days a year

From October to May frost is routine, and in January it comes on almost every night. Deep cold, under −20°C, comes on about 21 nights a year.

162

Frost days a year (0°C or below)

More frosts than 54% of Canadian towns

Days that stay below 0°C

Nights a year below −20°C

101

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

1,173 mm of precipitation in a typical year

About 135 days a year bring 1 mm or more.

1,173 mm

Rain and snow a year

Wetter than 87% of Canadian towns

119 mm

July, the wettest month

66 mm

February, the driest month

Rain and snow by month

Millimetres

119 mm

JFMAMJJASOND

Precipitation: Québec Jean Lesage (Airport), 9.8 km away (Ste-Foy (U. Laval) records no complete year of it).

Snow

Snowfall: about 299 cm in a normal year

From October to April snow is likely; December is the peak, at about 77 cm.

299 cm

Snowfall a year

Snowier than 93% of Canadian towns

Days a year with 0.2 cm of snow or more

Snowfall by month

Centimetres

77 cm

JFMAMJJASOND

Snowfall: Lauzon, 13 km away (Ste-Foy (U. Laval) records no complete year of it).

Heating

Heating a home in Sillery

92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.

4,823 heating degree days (below 18°C)a year, 1991–2020

1,905 growing degree days (above 5°C)a year, 1991–2020

Heating degree days total each day’s gap between its mean temperature and 18°C.

Living here

Living with Sillery’s climate

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

Get outside

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

Parks & trails →

Wind chill

Expect around 39 days a year when the wind chill sinks below −20.

Humidex

Expect around 31 sticky days a year with the humidex above 30.

Storms and extremes

What averages leave out, the floods and ice storms, is on Sillery’s hazards page.

Flood & hazards →

Weather station

ECCC’s normals location: Ste-Foy (U. Laval)

Ste-Foy (U. Laval) is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.

Distance from the town	4.9 km west
Station altitude	79 m
Completeness	meets the WMO “3 and 5” rule
WMO standard normals	No
Precipitation from	Québec Jean Lesage (Airport), 9.8 km
Snowfall from	Lauzon, 13 km
Coldest reading, 1991–2020	−33.8°C
Hottest reading, 1991–2020	35.3°C
Average wind	9.9 km/h on average, most often from the south-west
Next-nearest location	Québec Jean Lesage (Airport), 9.8 km

Compared with other towns

How Sillery 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 afternoons25.1°C

SilleryMedian Canadian town

18°C20°C22°C24°C26°C28°C

Cooler than 58% of Canadian towns

January nights−15.6°C

SilleryMedian Canadian town

−30°C−25°C−20°C−15°C−10°C−5°C

Colder than 73% of Canadian towns

Rain and snow a year1,173 mm

SilleryMedian Canadian town

05001,0001,5002,000

Wetter than 87% of Canadian towns

Snowfall a year299 cm

SilleryMedian Canadian town

100200300400

Snowier than 93% of Canadian towns

Next door

Nearby towns’ climate

The nearest places on a normals location of their own: those that share Sillery’s would only repeat its figures. Distances here run 8–16 km: that is how far the nearest places with figures are from Sillery.

Town	July high	January low	Rain & snow
Sillery Ste-Foy (U. Laval)	25.1°C	−15.6°C	1,173 mm
L'Ancienne-Lorette 8.0 km · Québec Jean Lesage (Airport)	25.0°C about the same	−16.7°C 1.1°C colder	1,173 mm
Sainte-Pétronille 13 km · Lauzon	24.9°C about the same	−16.6°C 1.0°C colder	1,216 mm
Saint-Henri 16 km · Beauséjour	25.5°C about the same	−16.8°C 1.2°C colder	1,299 mm

Month by month

Sillery weather by month

Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.

Month	High	Low	Mean	Rain & snow	Snow
January	−7.1°C	−15.6°C	−11.3°C	87 mm	62 cm
February	−4.8°C	−14.4°C	−9.6°C	66 mm	71 cm
March	0.8°C	−8.4°C	−3.8°C	78 mm	51 cm
April	8.4°C	−0.6°C	4.0°C	94 mm	12 cm
May	17.5°C	6.5°C	12.0°C	92 mm	0 cm
June	22.5°C	11.7°C	17.1°C	115 mm	0 cm
July	25.1°C	14.8°C	20.0°C	119 mm	0 cm
August	24.2°C	13.9°C	19.1°C	109 mm	0 cm
September	19.4°C	9.2°C	14.3°C	111 mm	0 cm
October	11.1°C	3.2°C	7.2°C	116 mm	2 cm
November	4.0°C	−2.7°C	0.7°C	91 mm	24 cm
December	−3.2°C	−10.2°C	−6.7°C	96 mm	77 cm
Year	9.8°C	0.6°C	5.2°C	1,173 mm	299 cm

Year to year

March: −27.7°C at its coldest, 20.4°C at its warmest

The month to count on least is January: one year in three its average strays more than 2.8°C from −11.3°C. August moves least, typically by 1.0°C.

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Sillery’s numbers come from

Averages over 30 years, not a forecast.

Normals: the 1991–2020 normals from ECCC for Ste-Foy (U. Laval), its nearest location with complete temperatures.
Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
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 Sillery’s climate

How warm does Sillery get in summer?

The warmest month is July, when afternoons average 25.1°C.

How cold does Sillery get in winter?

Of all twelve months, January has the coldest nights, about −15.6°C.

How much rain and snow does Sillery get?

The yearly total is about 1,173 mm. July gets 119 mm, the most of any month; February gets 66 mm, the least.

Are these figures for Sillery itself?

No, the station behind them is Ste-Foy (U. Laval), beyond Sillery’s boundary.

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

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).