Precipitation in Saint-Sylvestre tops that of 89% of Canadian towns: 1,182 mm a year
The warmest part of a July day comes in at 25.1°C on average. Winter nights are cold: in January they are colder than in 78% of Canadian towns. The gap between a January night and a July afternoon is 42°C. Wet days, with 1 mm of rain or snow or more, come about 158 times a year.
These are not Saint-Sylvestre’s own readings: ECCC keeps no normals there, so the page uses Scott, 20 km north-east.
A year in Saint-Sylvestre at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Sylvestre’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Sylvestre feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 181 frosts and 100 warm days a year
Frost comes from September 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
1,182 mm of precipitation in a typical year
July is the wettest month and February the driest.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 287 cm of snow a year
Expect snow from October to May, with about 75 cm in December, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint-Sylvestre
90% 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 more heating than 63% of Canadian towns.
Living with Saint-Sylvestre’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Between the last frost, near 18 May, and the first, near 27 September, lie about 130 frost-free days.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul, Aug and Sep.
Parks & trails →A normal year has no blizzard, flood or heat wave in it; Saint-Sylvestre’s hazards page looks at those.
Flood & hazards →ECCC’s normals location: Scott
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Scott.
| Distance from the town | 20 km north-east |
| Station altitude | 145 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −42.0°C |
| Hottest reading, 1991–2020 | 34.5°C |
| Next-nearest location | Thetford Mines, 30 km |
How Saint-Sylvestre 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
The nearest places on a normals location of their own: those that share Saint-Sylvestre’s would only repeat its figures. Distances here run 20–30 km: that is how far the nearest places with figures are from Saint-Sylvestre.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Sylvestre Scott | 25.1°C | −16.5°C | 1,182 mm |
| East Broughton 20 km · Thetford Mines | 23.5°C 1.6°C cooler | −16.1°C about the same | 1,324 mm |
| Saint-Lambert-de-Lauzon 24 km · Beauséjour | 25.5°C about the same | −16.8°C about the same | 1,299 mm |
| Lyster 28 km · Fortierville | 25.5°C about the same | −16.9°C about the same | 1,138 mm |
Saint-Sylvestre 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 | −6.6°C | −16.5°C | −11.9°C | 86 mm | 63 cm |
| February | −4.6°C | −15.5°C | −10.0°C | 75 mm | 64 cm |
| March | 1.1°C | −9.4°C | −4.3°C | 77 mm | 49 cm |
| April | 9.0°C | −1.6°C | 3.9°C | 93 mm | 13 cm |
| May | 17.7°C | 5.3°C | 11.4°C | 98 mm | 1 cm |
| June | 22.8°C | 10.8°C | 16.8°C | 121 mm | 0 cm |
| July | 25.1°C | 14.1°C | 19.4°C | 126 mm | 0 cm |
| August | 24.1°C | 13.0°C | 18.5°C | 111 mm | 0 cm |
| September | 19.6°C | 8.4°C | 13.8°C | 99 mm | 0 cm |
| October | 11.7°C | 2.4°C | 7.1°C | 109 mm | 4 cm |
| November | 4.3°C | −3.4°C | 0.6°C | 81 mm | 19 cm |
| December | −2.9°C | −11.1°C | −7.2°C | 106 mm | 75 cm |
| Year | 10.1°C | −0.3°C | 4.8°C | 1,182 mm | 287 cm |
Two years in three, January’s average lands within 3.1°C of normal, against the steadier August
January has the widest record range, −42.0°C in 1994 to 15.0°C in 1995; the tick on each bar is the month’s normal.
Where Saint-Sylvestre’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Scott, the nearest location with a full year of temperatures.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Saint-Sylvestre’s climate
How warm does Saint-Sylvestre get in summer?
July is the warmest month, with average highs of 25.1°C.
How cold does Saint-Sylvestre get in winter?
Overnight lows average −16.5°C in January, the coldest month.
How much rain and snow does Saint-Sylvestre get?
July is the wettest month at 126 mm and February the driest at 75 mm, for 1,182 mm over the year.
Are these figures for Saint-Sylvestre itself?
They are borrowed from Scott, the nearest place to Saint-Sylvestre where ECCC publishes 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Sylvestre →
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).