More rain and snow fall on Saint-Isidore than on 89% of Canadian towns: 1,182 mm a year
July afternoons average 25.1°C. Temperatures cover 42°C across the year, low to high. In January, nights here are colder than in 78% of Canadian towns. Wet days, with 1 mm of rain or snow or more, come about 158 times a year.
The nearest ECCC normals location to Saint-Isidore is Scott, 7.9 km south, and every figure on this page is its.
A year in Saint-Isidore at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Isidore’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Isidore feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
181 frost days and 100 days above 20°C a year
From September to May frost is routine, and in January it comes on almost every night. Deep cold, under −20°C, comes on about 27 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,182 mm a year
The most falls in July, the least in February.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
287 cm of snow in a typical year
The snow season runs October to May; December brings the most, about 75 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Saint-Isidore
90% 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. By this count, homes here need more heating than 63% of Canadian towns.
Living with Saint-Isidore’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Plant out after about 18 May; the first frost of autumn usually arrives near 27 September, leaving roughly 130 days without frost.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →The normals describe a typical year, not its worst days; the hazards page covers Saint-Isidore’s.
Flood & hazards →ECCC’s normals location: Scott
Scott is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 7.9 km south |
| 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 | Beauséjour, 12 km |
How Saint-Isidore 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 Saint-Isidore’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Isidore Scott | 25.1°C | −16.5°C | 1,182 mm |
| Scott 7.7 km · Scott | 25.1°C about the same | −16.5°C about the same | 1,182 mm |
| Saint-Lambert-de-Lauzon 9.4 km · Beauséjour | 25.5°C about the same | −16.8°C about the same | 1,299 mm |
Saint-Isidore weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| 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 |
A January here can run warm or cold, its average moving by about 3.1°C; the steadiest month is August
The thirty-year records stretch furthest in January: a low of −42.0°C in 1994 and a high of 15.0°C in 1995.
Where Saint-Isidore’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Scott, its nearest location with complete 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: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Saint-Isidore’s climate
How warm does Saint-Isidore get in summer?
In July, the warmest month, the typical high is 25.1°C.
How cold does Saint-Isidore get in winter?
Lows sink to −16.5°C on an average January night.
How much rain and snow does Saint-Isidore get?
Rain and snow add up to about 1,182 mm of water a year; July brings the most (126 mm), February the least (75 mm).
Are these figures for Saint-Isidore itself?
No: Saint-Isidore has no normals location, so the figures come from Scott, the nearest with 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Isidore →
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).