Photo: Gabriel Picard · CC BY-SA 4.0More rain and snow fall on Saint-Marc-des-Carrières than on 84% of Canadian towns: 1,138 mm a year
High summer brings afternoon highs near 25.5°C. Rain or snow is most frequent in July and least in February. Winter nights are cold: in January they are colder than in 81% of Canadian towns. Garden chairs stay out from June to September, the months with highs of 20–26°C.
Borrowed figures: Saint-Marc-des-Carrières has no normals station, so these come from Fortierville, 22 km south.
A year in Saint-Marc-des-Carrières at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Marc-des-Carrières’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Marc-des-Carrières feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
175 frost days and 107 days above 20°C a year
Frost comes from September to May; in January almost every night freezes. Some 29 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 1,138 mm of rain and snow a year
On about 141 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 253 cm of snow a year
Expect snow from October to April, with about 59 cm in December, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint-Marc-des-Carrières
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Heating degree days total each day’s gap between its mean temperature and 18°C. Homes here need more heating than 61% of Canadian towns.
Living with Saint-Marc-des-Carrières’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →Severe weather is a separate story from the averages: see Saint-Marc-des-Carrières’s hazards page.
Flood & hazards →ECCC’s normals location: Fortierville
The page’s figures are ECCC’s 1991–2020 normals for Fortierville, one of its 450 normals locations.
| Distance from the town | 22 km south |
| Station altitude | 53 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −41.0°C |
| Hottest reading, 1991–2020 | 35.9°C |
| Next-nearest location | Trois-Rivières, 52 km |
How Saint-Marc-des-Carrières 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.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Saint-Marc-des-Carrières’s own would show the same figures). Saint-Marc-des-Carrières has few close neighbours with figures, so the list reaches 19–28 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Marc-des-Carrières Fortierville | 25.5°C | −16.9°C | 1,138 mm |
| Saint-Basile 19 km · Québec Jean Lesage (Airport) | 25.0°C 0.5°C cooler | −16.7°C about the same | 1,173 mm |
| Saint-Stanislas 28 km · Trois-Rivières | 25.1°C about the same | −14.1°C 2.8°C milder | 1,101 mm |
Saint-Marc-des-Carrières 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 | −6.9°C | −16.9°C | −12.0°C | 81 mm | 56 cm |
| February | −4.9°C | −15.9°C | −10.5°C | 69 mm | 55 cm |
| March | 1.2°C | −9.0°C | −4.0°C | 79 mm | 47 cm |
| April | 9.5°C | −1.0°C | 4.4°C | 94 mm | 15 cm |
| May | 18.4°C | 5.8°C | 12.1°C | 92 mm | 1 cm |
| June | 23.3°C | 11.1°C | 17.2°C | 108 mm | 0 cm |
| July | 25.5°C | 14.0°C | 19.6°C | 133 mm | 0 cm |
| August | 24.5°C | 12.9°C | 18.6°C | 103 mm | 0 cm |
| September | 20.0°C | 8.3°C | 14.2°C | 95 mm | 0 cm |
| October | 12.1°C | 2.5°C | 7.4°C | 105 mm | 3 cm |
| November | 4.6°C | −3.2°C | 0.9°C | 82 mm | 19 cm |
| December | −2.9°C | −10.9°C | −6.9°C | 100 mm | 59 cm |
| Year | 10.4°C | −0.2°C | 5.1°C | 1,138 mm | 253 cm |
In March, anything from −32.0°C to 23.5°C
January is the least predictable month: about two years in three its average lands within 3.2°C of the normal, −12.0°C. June is the steadiest, within 1.0°C.
Where Saint-Marc-des-Carrières’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Fortierville (the closest location with all twelve months of temperatures).
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Saint-Marc-des-Carrières’s climate
How warm does Saint-Marc-des-Carrières get in summer?
Peak warmth comes in July, at about 25.5°C by mid-afternoon.
How cold does Saint-Marc-des-Carrières get in winter?
Lows sink to −16.9°C on an average January night.
How much rain and snow does Saint-Marc-des-Carrières get?
Precipitation totals 1,138 mm a year, with July the wettest month (133 mm) and February the driest (69 mm).
How long does snow stay on the ground?
Roughly 134 days a year start with snow cover of 1 cm or more.
Are these figures for Saint-Marc-des-Carrières itself?
No. ECCC measures normals at Fortierville, not in Saint-Marc-des-Carrières; the page uses the nearest it has.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Marc-des-Carrières →
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).