July in Lemoyne runs hotter than in 78% of Canadian towns
Midwinter brings lows of about −13.5°C. Winter and summer sit 40°C apart. Its yearly rain and snow top those of 74% of Canadian towns. Ice scrapers and block heaters earn their keep on roughly 146 days a year at 0°C or below.
No ECCC station in Lemoyne has 1991–2020 normals; the page reads Montréal Trudeau (Airport), 20 km west, instead.
A year in Lemoyne at a glance
Each month’s typical high and low, in °C.
What stands out about Lemoyne’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Lemoyne feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 146 frosts and 121 warm days a year
From October to April frost is routine, and in January it comes on almost 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
October brings the most rain and snow; February, the least. Some 122 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 217 cm of snow a year
Expect snow from October to April, with about 52 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Lemoyne
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. A house here needs less heating than 62% of Canadian towns.
Living with Lemoyne’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Count on about 167 frost-free days: the last frost averages 29 April, the first 14 October.
Highs of 17–27°C with nights of 8°C or more come in May, Jun, Jul, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 40 days a year.
About 50 days a year feel above 30 on the humidex.
Averages smooth over blizzards, ice storms, floods and heat waves; Lemoyne’s hazards page covers the risks.
Flood & hazards →ECCC’s normals location: Montréal Trudeau (Airport)
ECCC builds the Montréal Trudeau (Airport) normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 20 km 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, 26 km |
How Lemoyne 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
Nearby places read from a different ECCC location (places on Lemoyne’s own would show the same figures). No closer places have figures: these lie 5–13 km from Lemoyne.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lemoyne Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Brossard 5.4 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
| Boucherville 12 km · L'Assomption | 26.6°C about the same | −16.0°C 2.5°C colder | 1,041 mm |
Lemoyne 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 |
From year to year, January moves by 3.0°C, more than any month, and June least
Bars run from each month’s record low to its record high since 1991. March spans the most, from −26.9°C (1992) to 25.8°C (2012).
Where Lemoyne’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: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- 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 Lemoyne’s climate
How warm does Lemoyne get in summer?
July is the warmest month, with average highs of 26.7°C.
How cold does Lemoyne get in winter?
Lows sink to −13.5°C on an average January night.
How much rain and snow does Lemoyne get?
October is the wettest month at 103 mm and February the driest at 66 mm, for 1,041 mm over the year.
How long does snow stay on the ground?
Snow cover of 1 cm or more lasts about 101 days in a typical year.
Are these figures for Lemoyne itself?
Only indirectly: the readings are made at Montréal Trudeau (Airport), outside Lemoyne.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lemoyne →
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).