Summer afternoons in Lorimier are warmer than in 78% of Canadian towns
Midwinter brings lows of about −13.5°C. Counting rain and snow together, it is wetter than 74% of Canadian towns. The wettest month is October; the driest is February. For walks and days out, the stretch from May to September brings highs of 19–27°C.
Figures: ECCC’s 1991–2020 normals for Montréal Trudeau (Airport) (16 km south-west).
A year in Lorimier at a glance
Each month’s typical high and low, in °C.
What stands out about Lorimier’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Lorimier 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
The frost season runs October to April, and January freezes nearly every night. 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
Rain and melted snow: about 1,041 mm a year
About 122 days a year bring 1 mm or more.
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 Lorimier
93% 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. Over a year, a home here needs less heating than 62% of Canadian towns.
Living with Lorimier’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Tender plants are usually safe from around 29 April until frost returns near 14 October: about 167 days.
Highs of 17–27°C with nights of 8°C or more come in May, Jun, Jul, Aug and Sep.
Parks & trails →The wind chill passes −20 on about 40 days in a normal year.
Humid summer days, the humidex above 30, number about 50 a year.
Bad-weather days, from blizzards to floods, get their own page for Lorimier: the hazards page.
Flood & hazards →ECCC’s normals location: Montréal Trudeau (Airport)
Behind the 1991–2020 normals for Montréal Trudeau (Airport) are 3 stations, which ECCC combines into one record.
| Distance from the town | 16 km south-west |
| 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, 32 km |
How Lorimier 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
Places around Lorimier whose figures come from another normals location. Distances here run 12–17 km: that is how far the nearest places with figures are from Lorimier.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lorimier Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Montréal-Est 12 km · L'Assomption | 26.6°C about the same | −16.0°C 2.5°C colder | 1,041 mm |
| Brossard 12 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Lorimier 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 | −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 varies most from one year to the next (3.0°C), June least
March has the widest record range, −26.9°C in 1992 to 25.8°C in 2012; the tick on each bar is the month’s normal.
Where Lorimier’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Montréal Trudeau (Airport), its nearest location with complete temperatures.
- 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: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Lorimier’s climate
How warm does Lorimier get in summer?
A normal July afternoon tops out at about 26.7°C, the year’s high point.
How cold does Lorimier get in winter?
January nights average −13.5°C, the coldest of the year.
How much rain and snow does Lorimier get?
A normal year brings 1,041 mm, snow included as water: October is wettest at 103 mm, February driest at 66 mm.
How long does snow stay on the ground?
A layer of at least 1 cm stays down on about 101 days a year.
Are these figures for Lorimier itself?
Almost: ECCC’s Montréal Trudeau (Airport) location, which gives these figures, lies a short way outside Lorimier.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lorimier →
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).