Grenet has warmer summer afternoons than 78% of Canadian towns
Deep winter brings January lows near −13.5°C. Winter and summer sit 40°C apart. Counting rain and snow together, it is wetter than 74% of Canadian towns. Frost comes on about 146 days a year, so leave time to clear the car.
Environment and Climate Change Canada’s 1991–2020 normals at its Montréal Trudeau (Airport) station, 7.0 km south-west.
A year in Grenet at a glance
Each month’s typical high and low, in °C.
What stands out about Grenet’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Grenet feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
146 frost days and 121 days above 20°C 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
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 Grenet
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A heating degree day is one degree of shortfall below 18°C for one day, summed over the year. Over a year, a home here needs less heating than 62% of Canadian towns.
Living with Grenet’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Gardens get from about 29 April to 14 October without frost, around 167 days in all.
The outdoor season by the averages is May, Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →The wind chill passes −20 on about 40 days in a normal year.
Plan shade and water for about 50 days a year above 30 on the humidex.
Thirty-year normals hide the storms and the extremes: the hazards page has Grenet’s risks.
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 | 7.0 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, 37 km |
How Grenet 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
Places around Grenet whose figures come from another normals location. The nearest places to Grenet with figures are 19–22 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Grenet Montréal Trudeau (Airport) | 26.7°C | −13.5°C | 1,041 mm |
| Montréal-Est 19 km · L'Assomption | 26.6°C about the same | −16.0°C 2.5°C colder | 1,041 mm |
| Brossard 19 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
Grenet 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
The month to count on least is January: one year in three its average strays more than 3.0°C from −9.2°C. June moves least, typically by 1.1°C.
Where Grenet’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Montréal Trudeau (Airport), the nearest location with a full year of 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 (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 Grenet’s climate
How warm does Grenet get in summer?
Afternoons average 26.7°C in July, the warmest time of year.
How cold does Grenet get in winter?
In January, the coldest month, the typical low is −13.5°C.
How much rain and snow does Grenet get?
The yearly total is about 1,041 mm. October gets 103 mm, the most of any month; February gets 66 mm, the least.
How long does snow stay on the ground?
Expect snow on the ground, at least 1 cm, for about 101 days a year.
Are these figures for Grenet itself?
They are the normals for Montréal Trudeau (Airport), measured just outside Grenet itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Grenet →
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).