Photo: Roncanada · CC BY 4.0Summer arrives in force in Dollard-Des Ormeaux, hotter than in 78% of Canadian towns
On a normal January night the air cools to about −13.5°C. It is a wet place: more rain and snow fall here than on 74% of Canadian towns. The seasons are far apart: from a winter night to a summer afternoon the average spans 40°C. The heating season runs October to April: each of those months averages under 10°C.
ECCC publishes no normals for Dollard-Des Ormeaux itself; the figures are those of Montréal Trudeau (Airport), 5.5 km east.
A year in Dollard-Des Ormeaux at a glance
Each month’s typical high and low, in °C.
What stands out about Dollard-Des Ormeaux’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Dollard-Des Ormeaux feels like
Each season’s and each month’s usual high and low, 1991–2020.
146 frost days and 121 days above 20°C a year
Frost comes from October to April; in January almost every night freezes. Deep cold, under −20°C, comes on about 12 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
1,041 mm of precipitation in a typical year
October is the wettest month and February the driest. On about 122 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
217 cm of snow in a typical year
Snow falls from October to April, most of all in January (about 52 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Dollard-Des Ormeaux
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year. Over a year, a home here needs less heating than 62% of Canadian towns.
Living with Dollard-Des Ormeaux’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Wait until about 29 April to plant out; frost tends to come back around 14 October, about 167 days later.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: May, Jun, Jul, Aug and Sep.
Parks & trails →Expect around 40 days a year when the wind chill sinks below −20.
Roughly 50 days a year feel hotter than 30 once humidity is counted.
Storms, floods and heat waves sit outside these normals; Dollard-Des Ormeaux’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Montréal Trudeau (Airport)
Montréal Trudeau (Airport) is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 5.5 km east |
| Station altitude | 36 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −31.8°C |
| Hottest reading, 1991–2020 | 36.6°C |
| Average wind | 15.4 km/h on average, most often from the west |
| Next-nearest location | L'Acadie, 43 km |
How Dollard-Des Ormeaux 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 Dollard-Des Ormeaux’s own would show the same figures). Distances here run 23–28 km: that is how far the nearest places with figures are from Dollard-Des Ormeaux.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Dollard-Des Ormeaux Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Kanesatake 23 km · Lachute | 26.5°C about the same | −14.7°C 1.2°C colder | 1,178 mm |
| Candiac 26 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Dollard-Des Ormeaux weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.0°C | −13.5°C | −9.2°C | 86 mm | 52 cm |
| February | −3.4°C | −12.4°C | −8.0°C | 66 mm | 47 cm |
| March | 2.4°C | −6.5°C | −2.0°C | 77 mm | 37 cm |
| April | 11.3°C | 1.1°C | 6.2°C | 90 mm | 15 cm |
| May | 19.4°C | 8.3°C | 13.9°C | 86 mm | 0 cm |
| June | 24.2°C | 13.8°C | 19.0°C | 84 mm | 0 cm |
| July | 26.7°C | 16.7°C | 21.7°C | 91 mm | 0 cm |
| August | 25.7°C | 15.6°C | 20.6°C | 94 mm | 0 cm |
| September | 21.1°C | 10.9°C | 16.0°C | 89 mm | 0 cm |
| October | 13.2°C | 4.5°C | 8.9°C | 103 mm | 1 cm |
| November | 6.1°C | −1.7°C | 2.3°C | 84 mm | 16 cm |
| December | −1.2°C | −8.7°C | −5.0°C | 92 mm | 48 cm |
| Year | 11.7°C | 2.3°C | 7.0°C | 1,041 mm | 217 cm |
January strays furthest from its normal year to year, by 3.0°C; June the least
The thirty-year records stretch furthest in March: a low of −26.9°C in 1992 and a high of 25.8°C in 2012.
Where Dollard-Des Ormeaux’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Montréal Trudeau (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- 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 Dollard-Des Ormeaux’s climate
How warm does Dollard-Des Ormeaux get in summer?
On a normal day in July the thermometer climbs to 26.7°C, the warmest of the year.
How cold does Dollard-Des Ormeaux get in winter?
Of all twelve months, January has the coldest nights, about −13.5°C.
How much rain and snow does Dollard-Des Ormeaux get?
Rain and snow, with snow counted as water, total 1,041 mm a year; October leads with 103 mm and February trails with 66 mm.
How long does snow stay on the ground?
On about 101 days a year the ground keeps at least 1 cm of snow.
Are these figures for Dollard-Des Ormeaux itself?
No, they come from Montréal Trudeau (Airport); ECCC keeps no 1991–2020 normals in Dollard-Des Ormeaux itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Dollard-Des Ormeaux →
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).