Climate in Saint-François · ECCC 1991–2020 normals

Winter nights in Saint-François are colder than in 75% of Canadian towns

July afternoons average 26.6°C. The gap between a January night and a July afternoon is 43°C. Rain and snow together come to more here than on 74% of Canadian towns. About 122 days a year bring 1 mm of precipitation or more.

July afternoons: warmer than 70% of Canadian towns

January nights: colder than 75% of Canadian towns

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

ECCC publishes no normals for Saint-François itself; the figures are those of L'Assomption, 20 km north-east.

July high

26.6°C

Typical Canadian town 25.5°C

January low

−16.0°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

161

a year at 0°C or below

A year in Saint-François at a glance

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

Jan−6°C−16°CColdest nightsSnowiest

Feb−4°C−15°C

Mar2°C−8°C

Apr11°C0°C

May19°C7°C

Jun24°C12°C

Jul27°C15°CWarmest

Aug26°C14°C

Sep21°C9°C

Oct13°C3°CWettest

Nov now5°C−3°C

Dec−2°C−10°C

What stands out about Saint-François’s climate

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

A wider year than 82% of Canadian townsFrom January nights to July afternoons, the year spans 42.6°C.Snowier than 80% of Canadian townsAbout 217 cm of snow falls in a year, most of it in January.Colder than 75% of Canadian townsJanuary nights average −16.0°C, the coldest of the year.

A normal year

What a year in Saint-François feels like

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

Winter

−4°C / −14°C

243 mm, with 147 cm of snow

Spring

11°C / 0°C

253 mm, with 52 cm of snow

Summer

25°C / 14°C

268 mm of rain and snow

Autumn

13°C / 3°C

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

−20°

−10°

0°

10°

20°

30°

40°

−6°C−16°C

−4°C−15°C

2°C−8°C

11°C0°C

19°C7°C

24°C12°C

27°C15°C

26°C14°C

21°C9°C

13°C3°C

5°C−3°C

−2°C−10°C

JanFebMarAprMayJunJulAugSepOctNovDec

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

Frost & warm days

About 161 frosts and 119 warm days a year

Frost comes from October to May; in January almost every night freezes. Some 24 nights a year drop under −20°C.

161

Frost days a year (0°C or below)

More frosts than 52% of Canadian towns

Days that stay below 0°C

Nights a year below −20°C

119

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.

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'Assomption normals leave out precipitation and snow; both come from Montréal Trudeau (Airport) here, 26 km away.

Snow

About 217 cm of snow a 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

Snowfall by month

Centimetres

52 cm

JFMAMJJASOND

Heating

Heating a home in Saint-François

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

4,592 heating degree days (below 18°C)a year, 1991–2020

2,093 growing degree days (above 5°C)a year, 1991–2020

Every day colder than 18°C on average adds its gap in degrees to the year’s heating total.

Living here

Living with Saint-François’s climate

The averages read for the garden, the outdoors and the coldest and hottest days.

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

The wind chill passes −20 on about 44 days in a normal year.

Humidex

Humid heat, a humidex over 30, comes on about 49 days a year.

Storms and extremes

Storms, floods and heat waves sit outside these normals; Saint-François’s hazards page covers them.

Flood & hazards →

Weather station

ECCC’s normals location: L'Assomption

The page’s figures are ECCC’s 1991–2020 normals for L'Assomption, one of its 450 normals locations.

Distance from the town	20 km north-east
Station altitude	21 m
Completeness	meets the WMO “3 and 5” rule
WMO standard normals	No
Precipitation from	Montréal Trudeau (Airport), 26 km
Coldest reading, 1991–2020	−40.0°C
Hottest reading, 1991–2020	36.2°C
Average wind	10.0 km/h on average, most often from the south-west
Next-nearest location	Montréal Trudeau (Airport), 26 km

Compared with other towns

How Saint-François 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 afternoons26.6°C

Saint-FrançoisMedian Canadian town

18°C20°C22°C24°C26°C28°C

Warmer than 70% of Canadian towns

January nights−16.0°C

Saint-FrançoisMedian Canadian town

−30°C−25°C−20°C−15°C−10°C−5°C

Colder than 75% of Canadian towns

Rain and snow a year1,041 mm

Saint-FrançoisMedian Canadian town

05001,0001,5002,000

Wetter than 74% of Canadian towns

Snowfall a year217 cm

Saint-FrançoisMedian 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-François’s would only repeat its figures.

Town	July high	January low	Rain & snow
Saint-François L'Assomption	26.6°C	−16.0°C	1,041 mm
Rivière-des-Prairies 3.1 km · L'Assomption	26.6°C about the same	−16.0°C about the same	1,041 mm
Marc-Aurèle-Fortin 4.0 km · Montréal Trudeau (Airport)	26.7°C about the same	−13.5°C 2.5°C milder	1,041 mm

Month by month

Saint-François 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	−5.9°C	−16.0°C	−10.9°C	86 mm	52 cm
February	−4.0°C	−14.8°C	−9.4°C	66 mm	47 cm
March	1.8°C	−8.3°C	−3.2°C	77 mm	37 cm
April	10.8°C	0.1°C	5.5°C	90 mm	15 cm
May	19.2°C	7.2°C	13.2°C	86 mm	0 cm
June	24.3°C	12.4°C	18.4°C	84 mm	0 cm
July	26.6°C	14.8°C	20.7°C	91 mm	0 cm
August	25.5°C	13.7°C	19.6°C	94 mm	0 cm
September	21.1°C	9.2°C	15.2°C	89 mm	0 cm
October	13.0°C	3.2°C	8.1°C	103 mm	1 cm
November	5.4°C	−2.7°C	1.3°C	84 mm	16 cm
December	−1.9°C	−10.2°C	−6.1°C	92 mm	48 cm
Year	11.3°C	0.7°C	6.0°C	1,041 mm	217 cm

Year to year

January strays furthest from its normal year to year, by 3.1°C; June the least

Records from 1991 to 2020: no month spans more than March, between −29.5°C (1992) and 26.0°C (2012).

−50°

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Saint-François’s numbers come from

Averages over 30 years, not a forecast.

Normals: the 1991–2020 Canadian Climate Normals at L'Assomption, 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: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.

Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada

Questions about Saint-François’s climate

How warm does Saint-François get in summer?

The warmest month is July, when afternoons average 26.6°C.

How cold does Saint-François get in winter?

Deep winter means January, when nights average −16.0°C.

How much rain and snow does Saint-François get?

Precipitation totals 1,041 mm a year, with October the wettest month (103 mm) and February the driest (66 mm).

Are these figures for Saint-François itself?

They are the closest available: the normals for L'Assomption, since Saint-François has none.

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

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).