Photo: Veillg1 · CC0Summer arrives in force in Coteau-du-Lac, hotter than in 78% of Canadian towns
In January the night’s low is typically −13.0°C. Counting rain and snow together, it is wetter than 78% of Canadian towns. The wettest month is October; the driest is February. Homes need heating from October to April, the months averaging under 10°C.
No ECCC station in Coteau-du-Lac has 1991–2020 normals; the page reads St-Anicet, 23 km south-west, instead.
A year in Coteau-du-Lac at a glance
Each month’s typical high and low, in °C.
What stands out about Coteau-du-Lac’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Coteau-du-Lac feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 147 frosts and 121 warm days a year
The frost season runs October to April, and January freezes nearly every night. Deep cold, under −20°C, comes on about 13 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 1,047 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
170 cm of snow in a typical year
The snow season runs November to April; January brings the most, 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 Coteau-du-Lac
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. Homes here need less heating than 67% of Canadian towns.
Living with Coteau-du-Lac’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Between the last frost, near 28 April, and the first, near 7 October, lie about 161 frost-free days.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to May, Jun, Jul, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 36 days a year.
Expect around 60 sticky days a year with the humidex above 30.
The normals describe a typical year, not its worst days; the hazards page covers Coteau-du-Lac’s.
Flood & hazards →ECCC’s normals location: St-Anicet
St-Anicet is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 23 km south-west |
| 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 | Montréal Trudeau (Airport), 38 km |
How Coteau-du-Lac compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Quebec.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Coteau-du-Lac’s would only repeat its figures. No closer places have figures: these lie 9–16 km from Coteau-du-Lac.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Coteau-du-Lac St-Anicet | 26.7°C | −13.0°C | 1,047 mm |
| Les Cèdres 8.9 km · Montréal Trudeau (Airport) | 26.7°C about the same | −13.5°C 0.5°C colder | 1,041 mm |
| Saint-Lazare 12 km · Lachute | 26.5°C about the same | −14.7°C 1.7°C colder | 1,178 mm |
Coteau-du-Lac 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 |
March has run from −29.0°C to 27.0°C in thirty years
The month to count on least is January: one year in three its average strays more than 3.2°C from −8.7°C. August moves least, typically by 1.0°C.
Where Coteau-du-Lac’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for St-Anicet, its nearest location with complete temperatures.
- 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: 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 Coteau-du-Lac’s climate
How warm does Coteau-du-Lac get in summer?
Peak warmth comes in July, at about 26.7°C by mid-afternoon.
How cold does Coteau-du-Lac get in winter?
The year’s coldest nights belong to January, at about −13.0°C.
How much rain and snow does Coteau-du-Lac get?
Rain and snow add up to about 1,047 mm of water a year; October brings the most (109 mm), February the least (59 mm).
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 Coteau-du-Lac itself?
Only indirectly: the readings are made at St-Anicet, outside Coteau-du-Lac.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Coteau-du-Lac →
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).