Plateau is wetter than 87% of Canadian towns: 1,173 mm of rain and snow a year
July afternoons average 25.1°C. Rain or snow is most frequent in July and least in February. In January, nights here are colder than in 73% of Canadian towns. An umbrella or a shovel earns its place on about 135 days a year with 1 mm or more.
Measured at Ste-Foy (U. Laval), 0.7 km north-west: ECCC’s normals for 1991–2020.
A year in Plateau at a glance
Each month’s typical high and low, in °C.
What stands out about Plateau’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Plateau feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 162 frosts and 101 warm days a year
The frost season runs October to May, and January freezes nearly every night. Some 21 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
Rain and melted snow: about 1,173 mm a year
Rain and snow by month
Millimetres
ECCC’s Ste-Foy (U. Laval) normals leave precipitation out; the figures here come from Québec Jean Lesage (Airport), 5.7 km away.
About 331 cm of snow a year
Expect snow from October to April, with about 89 cm in December, the snowiest month.
Snowfall by month
Centimetres
ECCC’s Ste-Foy (U. Laval) normals leave snowfall out; the figures here come from Beauséjour, 16 km away.
Heating a home in Plateau
92% 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.
Living with Plateau’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
For long days outdoors, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →A wind chill below −20 is part of about 39 days a year here.
Humid summer days, the humidex above 30, number about 31 a year.
The normals describe a typical year, not its worst days; the hazards page covers Plateau’s.
Flood & hazards →ECCC’s normals location: Ste-Foy (U. Laval)
Behind the 1991–2020 normals for Ste-Foy (U. Laval) are 2 stations, which ECCC combines into one record.
| Distance from the town | 0.7 km north-west |
| Station altitude | 79 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Precipitation from | Québec Jean Lesage (Airport), 5.7 km |
| Snowfall from | Beauséjour, 16 km |
| Coldest reading, 1991–2020 | −33.8°C |
| Hottest reading, 1991–2020 | 35.3°C |
| Average wind | 9.9 km/h on average, most often from the south-west |
| Next-nearest location | Québec Jean Lesage (Airport), 5.7 km |
How Plateau 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
The nearest places on a normals location of their own: those that share Plateau’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Plateau Ste-Foy (U. Laval) | 25.1°C | −15.6°C | 1,173 mm |
| Pointe-de-Sainte-Foy 1.6 km · Ste-Foy (U. Laval) | 25.1°C about the same | −15.6°C about the same | 1,173 mm |
| L'Aéroport 4.1 km · Québec Jean Lesage (Airport) | 25.0°C about the same | −16.7°C 1.1°C colder | 1,173 mm |
Plateau 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 | −7.1°C | −15.6°C | −11.3°C | 87 mm | 71 cm |
| February | −4.8°C | −14.4°C | −9.6°C | 66 mm | 71 cm |
| March | 0.8°C | −8.4°C | −3.8°C | 78 mm | 55 cm |
| April | 8.4°C | −0.6°C | 4.0°C | 94 mm | 16 cm |
| May | 17.5°C | 6.5°C | 12.0°C | 92 mm | under 1 cm |
| June | 22.5°C | 11.7°C | 17.1°C | 115 mm | 0 cm |
| July | 25.1°C | 14.8°C | 20.0°C | 119 mm | 0 cm |
| August | 24.2°C | 13.9°C | 19.1°C | 109 mm | 0 cm |
| September | 19.4°C | 9.2°C | 14.3°C | 111 mm | 0 cm |
| October | 11.1°C | 3.2°C | 7.2°C | 116 mm | 4 cm |
| November | 4.0°C | −2.7°C | 0.7°C | 91 mm | 25 cm |
| December | −3.2°C | −10.2°C | −6.7°C | 96 mm | 89 cm |
| Year | 9.8°C | 0.6°C | 5.2°C | 1,173 mm | 331 cm |
In March, anything from −27.7°C to 20.4°C
Two years in three, January’s average falls within 2.8°C of its normal of −11.3°C; August keeps to within 1.0°C.
Where Plateau’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Ste-Foy (U. Laval), 1991–2020.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Plateau’s climate
How warm does Plateau get in summer?
July is the warmest month, with average highs of 25.1°C.
How cold does Plateau get in winter?
Overnight lows average −15.6°C in January, the coldest month.
How much rain and snow does Plateau get?
1,173 mm a year counting snow as water. The wettest month is July (119 mm); the driest, February (66 mm).
Are these figures for Plateau itself?
Yes: ECCC’s 1991–2020 normals for Ste-Foy (U. Laval), which is in Plateau.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Plateau →
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).