Photo: Pierre Bona · CC BY-SA 3.0More rain and snow fall on Saint-Jean-Baptiste than on 90% of Canadian towns: 1,216 mm a year
Midwinter brings lows of about −15.6°C. A year here swings 41°C from midwinter lows to midsummer highs. Its January nights bite harder than in 73% of Canadian towns. Homes need heating from October to April, the months averaging under 10°C.
Borrowed figures: Saint-Jean-Baptiste has no normals station, so these come from Ste-Foy (U. Laval), 8.2 km west.
A year in Saint-Jean-Baptiste at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Jean-Baptiste’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Jean-Baptiste feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 162 frosts and 101 warm days a year
From October to May frost is routine, and in January it comes on almost 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 1,216 mm a year
July brings the most rain and snow; March, the least. On about 142 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Precipitation and snowfall: Lauzon, 9.3 km away (Ste-Foy (U. Laval) records no complete year of either).
Snowfall: about 299 cm in a normal year
The snow season runs October to April; December brings the most, about 77 cm.
Snowfall by month
Centimetres
Heating a home in Saint-Jean-Baptiste
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C.
Living with Saint-Jean-Baptiste’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul, Aug and Sep.
Parks & trails →Roughly 39 days a year feel colder than −20 in the wind.
Muggy heat with a humidex over 30 arrives on about 31 days a year.
A typical year is calm by definition; Saint-Jean-Baptiste’s hazards page covers the exceptions.
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 | 8.2 km west |
| Station altitude | 79 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Precipitation from | Lauzon, 9.3 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 | Lauzon, 9.3 km |
How Saint-Jean-Baptiste 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
Nearby places read from a different ECCC location (places on Saint-Jean-Baptiste’s own would show the same figures). Distances here run 9–16 km: that is how far the nearest places with figures are from Saint-Jean-Baptiste.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Jean-Baptiste Ste-Foy (U. Laval) | 25.1°C | −15.6°C | 1,216 mm |
| Sainte-Pétronille 9.3 km · Lauzon | 24.9°C about the same | −16.6°C 1.0°C colder | 1,216 mm |
| L'Ancienne-Lorette 10 km · Québec Jean Lesage (Airport) | 25.0°C about the same | −16.7°C 1.1°C colder | 1,173 mm |
Saint-Jean-Baptiste weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −7.1°C | −15.6°C | −11.3°C | 80 mm | 62 cm |
| February | −4.8°C | −14.4°C | −9.6°C | 80 mm | 71 cm |
| March | 0.8°C | −8.4°C | −3.8°C | 78 mm | 51 cm |
| April | 8.4°C | −0.6°C | 4.0°C | 95 mm | 12 cm |
| May | 17.5°C | 6.5°C | 12.0°C | 98 mm | 0 cm |
| June | 22.5°C | 11.7°C | 17.1°C | 120 mm | 0 cm |
| July | 25.1°C | 14.8°C | 20.0°C | 129 mm | 0 cm |
| August | 24.2°C | 13.9°C | 19.1°C | 117 mm | 0 cm |
| September | 19.4°C | 9.2°C | 14.3°C | 123 mm | 0 cm |
| October | 11.1°C | 3.2°C | 7.2°C | 112 mm | 2 cm |
| November | 4.0°C | −2.7°C | 0.7°C | 84 mm | 24 cm |
| December | −3.2°C | −10.2°C | −6.7°C | 101 mm | 77 cm |
| Year | 9.8°C | 0.6°C | 5.2°C | 1,216 mm | 299 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 Saint-Jean-Baptiste’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Ste-Foy (U. Laval), the nearest location with a full year of temperatures.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- 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 Saint-Jean-Baptiste’s climate
How warm does Saint-Jean-Baptiste get in summer?
The warmest month is July, when afternoons average 25.1°C.
How cold does Saint-Jean-Baptiste get in winter?
In January, the coldest month, the typical low is −15.6°C.
How much rain and snow does Saint-Jean-Baptiste get?
About 1,216 mm a year, rain and melted snow together. July is the wettest month (129 mm) and March the driest (78 mm).
Are these figures for Saint-Jean-Baptiste itself?
Not quite: they come from Ste-Foy (U. Laval), the closest ECCC normals location to Saint-Jean-Baptiste.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Jean-Baptiste →
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).