Photo: P199 · CC BY-SA 4.0Saint-Polycarpe has warmer summer afternoons than 78% of Canadian towns
Midwinter brings lows of about −13.0°C. Counting rain and snow together, it is wetter than 78% of Canadian towns. From frozen January to warm July, readings climb 40°C. Wet days, with 1 mm of rain or snow or more, come about 141 times a year.
No ECCC station in Saint-Polycarpe has 1991–2020 normals; the page reads St-Anicet, 19 km south, instead.
A year in Saint-Polycarpe at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Polycarpe’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Polycarpe feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
Frost on 147 days, 20°C on 121
From October to April frost is routine, and in January it comes on almost every night. Some 13 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
1,047 mm of precipitation in a typical year
The most falls in October, the least in February.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 170 cm of snow a year
From November to April snow is likely; January is the peak, at about 44 cm. 484th snowiest of 493 towns of 2,500+ in Quebec.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint-Polycarpe
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The total grows by a degree for every degree a day’s mean sits under 18°C. By this count, homes here need less heating than 67% of Canadian towns.
Living with Saint-Polycarpe’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Wait until about 28 April to plant out; frost tends to come back around 7 October, about 161 days later.
For long days outdoors, May, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Bitter wind chill, under −20, comes on about 36 days a year.
Count on some 60 humid days a year with the humidex past 30.
The normals describe a typical year, not its worst days; the hazards page covers Saint-Polycarpe’s.
Flood & hazards →ECCC’s normals location: St-Anicet
ECCC builds the St-Anicet normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 19 km south |
| Station altitude | 53 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −38.0°C |
| Hottest reading, 1991–2020 | 36.0°C |
| Average wind | 10.8 km/h on average, most often from the west |
| Next-nearest location | Lachute, 39 km |
How Saint-Polycarpe compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Quebec.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Saint-Polycarpe’s would only repeat its figures. The nearest places to Saint-Polycarpe with figures are 11–20 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Polycarpe St-Anicet | 26.7°C | −13.0°C | 1,047 mm |
| Sainte-Marthe 11 km · Lachute | 26.5°C about the same | −14.7°C 1.7°C colder | 1,178 mm |
| Les Cèdres 20 km · Montréal Trudeau (Airport) | 26.7°C about the same | −13.5°C 0.5°C colder | 1,041 mm |
Saint-Polycarpe 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 | −4.1°C | −13.0°C | −8.7°C | 73 mm | 44 cm |
| February | −2.7°C | −12.1°C | −7.5°C | 59 mm | 41 cm |
| March | 2.8°C | −6.2°C | −1.6°C | 67 mm | 33 cm |
| April | 11.3°C | 1.6°C | 6.6°C | 97 mm | 8 cm |
| May | 19.5°C | 8.5°C | 14.0°C | 90 mm | 0 cm |
| June | 24.3°C | 13.8°C | 19.1°C | 105 mm | 0 cm |
| July | 26.7°C | 16.2°C | 21.2°C | 100 mm | 0 cm |
| August | 25.8°C | 15.0°C | 20.3°C | 89 mm | 0 cm |
| September | 21.6°C | 11.0°C | 16.2°C | 99 mm | 0 cm |
| October | 14.0°C | 4.9°C | 9.5°C | 109 mm | 1 cm |
| November | 6.6°C | −1.0°C | 3.0°C | 81 mm | 10 cm |
| December | −0.3°C | −7.6°C | −4.2°C | 77 mm | 34 cm |
| Year | 12.1°C | 2.6°C | 7.3°C | 1,047 mm | 170 cm |
From year to year, January moves by 3.2°C, more than any month, and August least
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −29.0°C in 2014 to 27.0°C in 2012.
Where Saint-Polycarpe’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, St-Anicet: the nearest of its locations with every month’s temperatures.
- 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: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Saint-Polycarpe’s climate
How warm does Saint-Polycarpe get in summer?
In July, the warmest month, the typical high is 26.7°C.
How cold does Saint-Polycarpe get in winter?
The year’s coldest nights belong to January, at about −13.0°C.
How much rain and snow does Saint-Polycarpe get?
Around 1,047 mm a year in all, from 109 mm in October down to 59 mm in February.
How long does snow stay on the ground?
Snow cover of 1 cm or more lasts about 110 days in a typical year.
Are these figures for Saint-Polycarpe itself?
Not quite: they come from St-Anicet, the closest ECCC normals location to Saint-Polycarpe.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Polycarpe →
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).