Photo: SamuelFreli · CC BY-SA 3.0Wet weather: 1,340 mm of rain and snow a year falls on Cowansville, more than on 94% of Canadian towns
The depth of winter brings overnight lows near −13.5°C. Expect the most rain and snow in July and the least in February. The furnace earns its keep from October to April, the months that average under 10°C.
ECCC publishes no normals for Cowansville itself; the figures are those of Sutton, 16 km south.
A year in Cowansville at a glance
Each month’s typical high and low, in °C.
What stands out about Cowansville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Cowansville feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 159 frosts and 111 warm days a year
Frost comes from October to May; in January almost every night freezes. On about 16 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,340 mm a year
2nd wettest of 513 towns of 2,500+ in Quebec. About 156 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 321 cm of snow a year
The snow season runs October to May; December brings the most, about 68 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Cowansville
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total.
Living with Cowansville’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Wait until about 15 May to plant out; frost tends to come back around 2 October, about 139 days later.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul, Aug and Sep.
Parks & trails →Bad-weather days, from blizzards to floods, get their own page for Cowansville: the hazards page.
Flood & hazards →ECCC’s normals location: Sutton
Sutton is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 16 km south |
| Station altitude | 244 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −36.5°C |
| Hottest reading, 1991–2020 | 33.5°C |
| Next-nearest location | Granby, 19 km |
How Cowansville 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 Cowansville’s would only repeat its figures.
Cowansville 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 | −3.9°C | −13.5°C | −8.9°C | 97 mm | 63 cm |
| February | −2.3°C | −12.3°C | −7.4°C | 84 mm | 62 cm |
| March | 2.8°C | −6.7°C | −2.0°C | 100 mm | 58 cm |
| April | 10.8°C | 0.4°C | 5.8°C | 111 mm | 26 cm |
| May | 18.6°C | 7.1°C | 12.8°C | 115 mm | 2 cm |
| June | 22.9°C | 11.9°C | 17.4°C | 114 mm | 0 cm |
| July | 25.3°C | 14.5°C | 19.7°C | 128 mm | 0 cm |
| August | 24.3°C | 13.7°C | 19.0°C | 123 mm | 0 cm |
| September | 20.3°C | 9.6°C | 14.9°C | 119 mm | 0 cm |
| October | 13.1°C | 3.9°C | 8.5°C | 127 mm | 9 cm |
| November | 5.9°C | −2.1°C | 2.0°C | 112 mm | 34 cm |
| December | −0.7°C | −8.7°C | −4.8°C | 111 mm | 68 cm |
| Year | 11.4°C | 1.5°C | 6.4°C | 1,340 mm | 321 cm |
The most changeable month: January, give or take 3.2°C; the steadiest, August
Records from 1991 to 2020: no month spans more than February, between −36.5°C (1993) and 19.0°C (2018).
Where Cowansville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Sutton, the closest ECCC location with twelve months of temperature normals.
- 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 Cowansville’s climate
How warm does Cowansville get in summer?
Of all twelve months, July has the warmest afternoons, about 25.3°C.
How cold does Cowansville get in winter?
January nights average −13.5°C, the coldest of the year.
How much rain and snow does Cowansville get?
A normal year brings 1,340 mm, snow included as water: July is wettest at 128 mm, February driest at 84 mm.
How long does snow stay on the ground?
A layer of at least 1 cm stays down on about 123 days a year.
Are these figures for Cowansville itself?
Not exactly. Cowansville lacks a normals station, so Sutton supplies the figures.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Cowansville →
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).