Summer afternoons in Louis-Hébert are warmer than in 78% of Canadian towns
On a normal January night the air cools to about −13.5°C. Rain and snow together come to more here than on 74% of Canadian towns. The wettest month is October; the driest is February. Heating does most of its work from October to April, in months below 10°C on average.
1991–2020 normals from ECCC’s Montréal Trudeau (Airport) location, 15 km south-west.
A year in Louis-Hébert at a glance
Each month’s typical high and low, in °C.
What stands out about Louis-Hébert’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Louis-Hébert feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 146 days, 20°C on 121
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
About 1,041 mm of rain and snow a year
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
The snow season runs October to April; January brings the most, about 52 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Louis-Hébert
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. In heating terms, homes need less heating than 62% of Canadian towns.
Living with Louis-Hébert’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.
Afternoons of 17–27°C and nights of at least 8°C arrive in May, Jun, Jul, Aug and Sep.
Parks & trails →The wind chill passes −20 on about 40 days in a normal year.
Expect around 50 sticky days a year with the humidex above 30.
For the weather that does damage, from ice storms to floods, see Louis-Hébert’s 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 | 15 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'Assomption, 32 km |
How Louis-Hébert 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
The nearest places on a normals location of their own: those that share Louis-Hébert’s would only repeat its figures. Louis-Hébert has few close neighbours with figures, so the list reaches 12–19 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Louis-Hébert 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 14 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Louis-Hébert 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 |
March: −26.9°C at its coldest, 25.8°C at its warmest
From one year to the next, January’s average typically shifts by 3.0°C around its normal of −9.2°C, the widest of any month, while June’s shifts by 1.1°C.
Where Louis-Hébert’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Montréal Trudeau (Airport), the closest ECCC location with twelve months of temperature normals.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Louis-Hébert’s climate
How warm does Louis-Hébert get in summer?
Highs reach 26.7°C on an average July day; no month is warmer.
How cold does Louis-Hébert get in winter?
January nights average −13.5°C, the coldest of the year.
How much rain and snow does Louis-Hébert get?
The year adds up to 1,041 mm. October is the peak month (103 mm) and February the low one (66 mm).
How long does snow stay on the ground?
There is 1 cm of snow or more on the ground on roughly 101 days a year.
Are these figures for Louis-Hébert itself?
Almost: ECCC’s Montréal Trudeau (Airport) location, which gives these figures, lies a short way outside Louis-Hébert.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Louis-Hébert →
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).