Mont-Saint-Grégoire is wetter than 91% of Canadian towns: 1,226 mm of rain and snow a year
On a normal January night the air cools to about −13.6°C. Its July heat outdoes that of 70% of Canadian towns. A year here swings 40°C from midwinter lows to midsummer highs. Plan for rain or snow on about 145 days a year, the days with 1 mm or more.
Borrowed figures: Mont-Saint-Grégoire has no normals station, so these come from L'Acadie, 16 km west.
A year in Mont-Saint-Grégoire at a glance
Each month’s typical high and low, in °C.
What stands out about Mont-Saint-Grégoire’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Mont-Saint-Grégoire feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 149 frosts and 124 warm days a year
The frost season runs October to April, and January freezes nearly every night. Some 15 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
1,226 mm of precipitation in a typical year
The most falls in July, the least in February.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
ECCC’s L'Acadie normals leave out precipitation and snow; both come from Granby here, 35 km away.
About 262 cm of snow a year
Expect snow from October to April, with about 59 cm in January, the snowiest month.
Snowfall by month
Centimetres
Heating a home in Mont-Saint-Grégoire
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.
Living with Mont-Saint-Grégoire’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul, Aug and Sep.
Parks & trails →Count on some 36 days a year when the wind makes it feel below −20.
Muggy heat with a humidex over 30 arrives on about 50 days a year.
For the weather that does damage, from ice storms to floods, see Mont-Saint-Grégoire’s hazards page.
Flood & hazards →ECCC’s normals location: L'Acadie
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for L'Acadie.
| Distance from the town | 16 km west |
| Station altitude | 44 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Granby, 35 km |
| Coldest reading, 1991–2020 | −32.5°C |
| Hottest reading, 1991–2020 | 36.1°C |
| Average wind | 11.4 km/h on average, most often from the west |
| Next-nearest location | Granby, 35 km |
How Mont-Saint-Grégoire compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Quebec.
Nearby towns’ climate
Places around Mont-Saint-Grégoire whose figures come from another normals location. Distances here run 14–19 km: that is how far the nearest places with figures are from Mont-Saint-Grégoire.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Mont-Saint-Grégoire L'Acadie | 26.6°C | −13.6°C | 1,226 mm |
| Rougemont 14 km · Granby | 25.6°C 1.0°C cooler | −13.4°C about the same | 1,226 mm |
| Sainte-Sabine 16 km · Frelighsburg | 25.6°C 1.0°C cooler | −12.9°C 0.7°C milder | 1,226 mm |
Mont-Saint-Grégoire 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 | −4.3°C | −13.6°C | −9.0°C | 95 mm | 59 cm |
| February | −2.9°C | −12.7°C | −7.8°C | 74 mm | 58 cm |
| March | 2.6°C | −6.7°C | −2.1°C | 88 mm | 48 cm |
| April | 11.1°C | 0.7°C | 5.9°C | 101 mm | 17 cm |
| May | 19.5°C | 7.8°C | 13.7°C | 100 mm | 1 cm |
| June | 24.2°C | 13.2°C | 18.7°C | 121 mm | 0 cm |
| July | 26.6°C | 15.5°C | 21.1°C | 122 mm | 0 cm |
| August | 25.3°C | 13.9°C | 19.6°C | 113 mm | 0 cm |
| September | 21.4°C | 9.7°C | 15.6°C | 113 mm | 0 cm |
| October | 13.6°C | 4.1°C | 8.9°C | 109 mm | 4 cm |
| November | 6.1°C | −1.7°C | 2.2°C | 92 mm | 22 cm |
| December | −0.7°C | −8.6°C | −4.7°C | 98 mm | 54 cm |
| Year | 11.9°C | 1.8°C | 6.8°C | 1,226 mm | 262 cm |
Two years in three, January’s average lands within 2.9°C of normal, against the steadier August
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −28.7°C in 2003 to 25.4°C in 2012.
Where Mont-Saint-Grégoire’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at L'Acadie (the closest location with all twelve months of temperatures).
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Mont-Saint-Grégoire’s climate
How warm does Mont-Saint-Grégoire get in summer?
On a normal day in July the thermometer climbs to 26.6°C, the warmest of the year.
How cold does Mont-Saint-Grégoire get in winter?
Expect nights around −13.6°C in January; no month is colder.
How much rain and snow does Mont-Saint-Grégoire get?
1,226 mm a year counting snow as water. The wettest month is July (122 mm); the driest, February (74 mm).
Are these figures for Mont-Saint-Grégoire itself?
Only indirectly: the readings are made at L'Acadie, outside Mont-Saint-Grégoire.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Mont-Saint-Grégoire →
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).