More rain and snow fall on Lac-Saint-Charles than on 87% of Canadian towns: 1,173 mm a year
The warmest part of a July day comes in at 25.0°C on average. Some 42°C separates winter nights from summer afternoons. Its January nights bite harder than in 80% of Canadian towns. Have the furnace checked before October to April, the months that average under 10°C.
Environment and Climate Change Canada’s 1991–2020 normals at its Québec Jean Lesage (Airport) station, 11 km south.
A year in Lac-Saint-Charles at a glance
Each month’s typical high and low, in °C.
What stands out about Lac-Saint-Charles’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Lac-Saint-Charles feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 170 days, 20°C on 100
Frost comes from October to May; in January almost every night freezes. On about 27 nights a year the air falls below −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
July is the wettest month and February the driest. About 135 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
About 299 cm of snow a year
Expect snow from October to April, with about 77 cm in December, the snowiest month.
Snowfall by month
Centimetres
Québec Jean Lesage (Airport) publishes no full year of snowfall, so these figures come from Lauzon, 23 km away.
Heating a home in Lac-Saint-Charles
91% 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. In heating terms, homes need more heating than 64% of Canadian towns.
Living with Lac-Saint-Charles’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The frost-free stretch runs from about 10 May to about 5 October, some 148 days in a normal year.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jun, Jul, Aug and Sep.
Parks & trails →Winter brings about 56 days with a wind chill below −20.
About 34 days a year feel above 30 on the humidex.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Lac-Saint-Charles’s hazards page.
Flood & hazards →ECCC’s normals location: Québec Jean Lesage (Airport)
ECCC builds the Québec Jean Lesage (Airport) normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 11 km south |
| Station altitude | 74 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Lauzon, 23 km |
| Coldest reading, 1991–2020 | −36.7°C |
| Hottest reading, 1991–2020 | 34.2°C |
| Average wind | 13.2 km/h on average, most often from the west |
| Next-nearest location | Ste-Foy (U. Laval), 14 km |
How Lac-Saint-Charles 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 Lac-Saint-Charles whose figures come from another normals location. The nearest places to Lac-Saint-Charles with figures are 10–20 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lac-Saint-Charles Québec Jean Lesage (Airport) | 25.0°C | −16.7°C | 1,173 mm |
| Québec 9.5 km · Ste-Foy (U. Laval) | 25.1°C about the same | −15.6°C 1.1°C milder | 1,173 mm |
| Boischatel 17 km · Lauzon | 24.9°C about the same | −16.6°C about the same | 1,216 mm |
Lac-Saint-Charles 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 | −16.7°C | −11.9°C | 87 mm | 62 cm |
| February | −5.0°C | −15.7°C | −10.4°C | 66 mm | 71 cm |
| March | 0.4°C | −9.3°C | −4.5°C | 78 mm | 51 cm |
| April | 8.3°C | −1.2°C | 3.5°C | 94 mm | 12 cm |
| May | 17.5°C | 5.6°C | 11.6°C | 92 mm | 0 cm |
| June | 22.5°C | 10.8°C | 16.7°C | 115 mm | 0 cm |
| July | 25.0°C | 13.9°C | 19.5°C | 119 mm | 0 cm |
| August | 24.0°C | 12.8°C | 18.4°C | 109 mm | 0 cm |
| September | 19.1°C | 8.3°C | 13.7°C | 111 mm | 0 cm |
| October | 11.3°C | 2.4°C | 6.8°C | 116 mm | 2 cm |
| November | 3.6°C | −3.8°C | −0.1°C | 91 mm | 24 cm |
| December | −3.3°C | −11.4°C | −7.3°C | 96 mm | 77 cm |
| Year | 9.7°C | −0.4°C | 4.7°C | 1,173 mm | 299 cm |
January has run from −36.7°C to 17.7°C in thirty years
Year to year, January varies most (a standard deviation of 2.9°C around −11.9°C) and August least (0.9°C).
Where Lac-Saint-Charles’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Québec Jean Lesage (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
- 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: 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 Lac-Saint-Charles’s climate
How warm does Lac-Saint-Charles get in summer?
Midsummer means July, with afternoons near 25.0°C on a typical day.
How cold does Lac-Saint-Charles get in winter?
On a normal January night the air drops to −16.7°C, the coldest of the year.
How much rain and snow does Lac-Saint-Charles get?
The yearly total is about 1,173 mm. July gets 119 mm, the most of any month; February gets 66 mm, the least.
Are these figures for Lac-Saint-Charles itself?
Almost: ECCC’s Québec Jean Lesage (Airport) location, which gives these figures, lies a short way outside Lac-Saint-Charles.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lac-Saint-Charles →
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).