Photo: P199 · CC BY-SA 4.0Saint-Mathieu is wetter than 74% of Canadian towns: 1,041 mm of rain and snow a year
July afternoons average 26.6°C. Of all months, October brings the most precipitation and February the least. Summer afternoons here are warmer than in 70% of Canadian towns. From June to September, highs of 21–27°C make it easy to spend the day outdoors.
ECCC publishes no normals for Saint-Mathieu itself; the figures are those of L'Acadie, 13 km east.
A year in Saint-Mathieu at a glance
Each month’s typical high and low, in °C.
What stands out about Saint-Mathieu’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Saint-Mathieu feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 149 days, 20°C on 124
The frost season runs October to April, and January freezes nearly every night. Deep cold, under −20°C, comes on about 15 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 1,041 mm of rain and snow a year
On about 122 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
ECCC’s L'Acadie normals leave out precipitation and snow; both come from Montréal Trudeau (Airport) here, 25 km away.
About 217 cm of snow a year
From October to April snow is likely; January is the peak, at about 52 cm.
Snowfall by month
Centimetres
Heating a home in Saint-Mathieu
93% 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.
Living with Saint-Mathieu’s climate
What the normals mean for a garden, a day outside and the depth of winter.
For long days outdoors, Jun, Jul, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Roughly 36 days a year feel colder than −20 in the wind.
Roughly 50 days a year feel hotter than 30 once humidity is counted.
What averages leave out, the floods and ice storms, is on Saint-Mathieu’s hazards page.
Flood & hazards →ECCC’s normals location: L'Acadie
L'Acadie is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 13 km east |
| Station altitude | 44 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Montréal Trudeau (Airport), 25 km |
| Coldest reading, 1991–2020 | −32.5°C |
| Hottest reading, 1991–2020 | 36.1°C |
| Average wind | 11.4 km/h on average, most often from the west |
| Next-nearest location | Montréal Trudeau (Airport), 25 km |
How Saint-Mathieu 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-Mathieu whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Saint-Mathieu L'Acadie | 26.6°C | −13.6°C | 1,041 mm |
| Saint-Philippe 5.8 km · L'Acadie | 26.6°C about the same | −13.6°C about the same | 1,041 mm |
| Delson 7.9 km · Montréal Trudeau (Airport) | 26.7°C about the same | −13.5°C about the same | 1,041 mm |
Saint-Mathieu weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −4.3°C | −13.6°C | −9.0°C | 86 mm | 52 cm |
| February | −2.9°C | −12.7°C | −7.8°C | 66 mm | 47 cm |
| March | 2.6°C | −6.7°C | −2.1°C | 77 mm | 37 cm |
| April | 11.1°C | 0.7°C | 5.9°C | 90 mm | 15 cm |
| May | 19.5°C | 7.8°C | 13.7°C | 86 mm | 0 cm |
| June | 24.2°C | 13.2°C | 18.7°C | 84 mm | 0 cm |
| July | 26.6°C | 15.5°C | 21.1°C | 91 mm | 0 cm |
| August | 25.3°C | 13.9°C | 19.6°C | 94 mm | 0 cm |
| September | 21.4°C | 9.7°C | 15.6°C | 89 mm | 0 cm |
| October | 13.6°C | 4.1°C | 8.9°C | 103 mm | 1 cm |
| November | 6.1°C | −1.7°C | 2.2°C | 84 mm | 16 cm |
| December | −0.7°C | −8.6°C | −4.7°C | 92 mm | 48 cm |
| Year | 11.9°C | 1.8°C | 6.8°C | 1,041 mm | 217 cm |
A March here can run from −28.7°C to 25.4°C
Bars run from each month’s record low to its record high over 1991–2020; January is the month whose average wanders most from year to year (±2.9°C around −9.0°C), August the one that wanders least (±1.0°C).
Where Saint-Mathieu’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for L'Acadie from ECCC’s climate data site, the nearest location with every month of temperature.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Saint-Mathieu’s climate
How warm does Saint-Mathieu get in summer?
On a normal day in July the thermometer climbs to 26.6°C, the warmest of the year.
How cold does Saint-Mathieu get in winter?
January nights average −13.6°C, the coldest of the year.
How much rain and snow does Saint-Mathieu get?
Precipitation totals 1,041 mm a year, with October the wettest month (103 mm) and February the driest (66 mm).
Are these figures for Saint-Mathieu itself?
No, they come from L'Acadie; ECCC keeps no 1991–2020 normals in Saint-Mathieu itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Saint-Mathieu →
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).