Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainJanuary in Saint-Prosper bites harder than in 80% of Canadian towns
On a normal July day the thermometer tops out near 25.3°C. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 42°C apart. Counting rain and snow together, it is wetter than 78% of Canadian towns. Windshields need scraping on about 185 mornings a year, the days the air reaches 0°C or below.
Borrowed figures: Saint-Prosper has no normals station, so these come from St Georges, 18 km west.
A year in Saint-Prosper at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Prosper’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Prosper feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
Frost on 185 days, 20°C on 107
The frost season runs September to May, and January freezes nearly every night. Some 31 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 1,054 mm a year
July brings the most rain and snow; February, the least. Some 137 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 202 cm of snow a year
Snow falls from October to April, most of all in December (about 53 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint-Prosper
90% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. Over a year, a home here needs more heating than 62% of Canadian towns.
Living with Saint-Prosper’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Seedlings can go out once the average last frost, around 28 May, has passed; autumn’s first, near 19 September, ends a season of about 113 days.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Saint-Prosper’s hazards page.
Flood & hazards →ECCC’s normals location: St Georges
The page’s figures are ECCC’s 1991–2020 normals for St Georges, one of its 450 normals locations.
| Distance from the town | 18 km west |
| Station altitude | 168 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −41.0°C |
| Hottest reading, 1991–2020 | 34.5°C |
| Next-nearest location | St Camille, 36 km |
How Saint-Prosper 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 Saint-Prosper whose figures come from another normals location. No closer places have figures: these lie 21–38 km from Saint-Prosper.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Prosper St Georges | 25.3°C | −16.7°C | 1,054 mm |
| Lac-Etchemin 21 km · St Camille | 23.5°C 1.8°C cooler | −17.5°C 0.8°C colder | 1,284 mm |
| Saints-Anges 35 km · Scott | 25.1°C about the same | −16.5°C about the same | 1,182 mm |
Saint-Prosper 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 | −5.8°C | −16.7°C | −11.4°C | 67 mm | 46 cm |
| February | −3.7°C | −16.3°C | −10.1°C | 52 mm | 41 cm |
| March | 2.0°C | −9.8°C | −4.0°C | 57 mm | 33 cm |
| April | 9.8°C | −1.9°C | 4.1°C | 89 mm | 12 cm |
| May | 18.2°C | 4.6°C | 11.5°C | 91 mm | under 1 cm |
| June | 23.0°C | 10.1°C | 16.7°C | 105 mm | 0 cm |
| July | 25.3°C | 13.0°C | 19.0°C | 128 mm | 0 cm |
| August | 24.5°C | 11.9°C | 18.2°C | 115 mm | 0 cm |
| September | 20.1°C | 7.4°C | 13.8°C | 88 mm | 0 cm |
| October | 12.3°C | 1.8°C | 7.1°C | 107 mm | 2 cm |
| November | 4.7°C | −3.8°C | 0.5°C | 73 mm | 15 cm |
| December | −2.4°C | −11.1°C | −7.2°C | 81 mm | 53 cm |
| Year | 10.7°C | −0.9°C | 4.9°C | 1,054 mm | 202 cm |
January varies most from one year to the next (3.1°C), June least
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −33.0°C in 2001 to 25.0°C in 2012.
Where Saint-Prosper’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for St Georges, its nearest location with complete temperatures.
- Comparisons: Canada’s towns and neighbourhoods of 2,500+ (no city totals, no reserves), each through its own nearest location.
- 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 Saint-Prosper’s climate
How warm does Saint-Prosper get in summer?
Peak warmth comes in July, at about 25.3°C by mid-afternoon.
How cold does Saint-Prosper get in winter?
The coldest nights come in January, averaging −16.7°C.
How much rain and snow does Saint-Prosper get?
A normal year brings 1,054 mm, snow included as water: July is wettest at 128 mm, February driest at 52 mm.
How long does snow stay on the ground?
Snow cover of 1 cm or more lasts about 117 days in a typical year.
Are these figures for Saint-Prosper itself?
No, the station behind them is St Georges, beyond Saint-Prosper’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Prosper →
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).