Photo: Veillg1 · CC0Wet weather: 1,178 mm of rain and snow a year falls on Sainte-Marthe, more than on 88% of Canadian towns
High summer brings afternoon highs near 26.5°C. October is the wettest month, February the driest. Its January nights bite harder than in 67% of Canadian towns. Plan time outside from June to September, when highs sit at 21–27°C.
Sainte-Marthe has no ECCC normals station of its own: every figure here comes from Lachute, 29 km north.
A year in Sainte-Marthe at a glance
Each month’s typical high and low, in °C.
What stands out about Sainte-Marthe’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Sainte-Marthe feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
159 frost days and 115 days above 20°C a year
Frost comes from October to May; in January almost every night freezes. Some 19 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 1,178 mm a year
Some 143 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 218 cm of snow a year
Snow falls from October to April, most of all in January (about 56 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Sainte-Marthe
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year.
Living with Sainte-Marthe’s climate
What the normals mean for a garden, a day outside and the depth of winter.
On average the last spring frost comes around 12 May and the first autumn frost around 3 October: about 143 frost-free days between.
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 →Bad-weather days, from blizzards to floods, get their own page for Sainte-Marthe: the hazards page.
Flood & hazards →ECCC’s normals location: Lachute
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Lachute.
| Distance from the town | 29 km north |
| Station altitude | 91 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −36.0°C |
| Hottest reading, 1991–2020 | 36.0°C |
| Next-nearest location | St-Anicet, 30 km |
How Sainte-Marthe 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 Sainte-Marthe’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Sainte-Marthe Lachute | 26.5°C | −14.7°C | 1,178 mm |
| Saint-Clet 6.9 km · St-Anicet | 26.7°C about the same | −13.0°C 1.7°C milder | 1,047 mm |
| Très-Saint-Rédempteur 7.9 km · Lachute | 26.5°C about the same | −14.7°C about the same | 1,178 mm |
Sainte-Marthe weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.5°C | −14.7°C | −10.2°C | 97 mm | 56 cm |
| February | −3.6°C | −13.6°C | −8.3°C | 72 mm | 47 cm |
| March | 2.4°C | −7.2°C | −2.5°C | 74 mm | 34 cm |
| April | 11.0°C | 0.5°C | 5.9°C | 100 mm | 8 cm |
| May | 19.4°C | 7.4°C | 13.3°C | 89 mm | 0 cm |
| June | 24.1°C | 12.6°C | 18.4°C | 111 mm | 0 cm |
| July | 26.5°C | 15.1°C | 20.5°C | 112 mm | 0 cm |
| August | 25.4°C | 14.3°C | 19.8°C | 104 mm | 0 cm |
| September | 20.8°C | 9.9°C | 15.4°C | 114 mm | 0 cm |
| October | 12.8°C | 3.7°C | 8.4°C | 120 mm | 2 cm |
| November | 5.2°C | −2.3°C | 1.6°C | 93 mm | 17 cm |
| December | −1.9°C | −9.5°C | −6.0°C | 94 mm | 53 cm |
| Year | 11.4°C | 1.4°C | 6.4°C | 1,178 mm | 218 cm |
January strays furthest from its normal year to year, by 3.2°C; August the least
Records from 1991 to 2020: no month spans more than March, between −30.5°C (2007) and 26.5°C (2012).
Where Sainte-Marthe’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Lachute, 1991–2020.
- 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: 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 Sainte-Marthe’s climate
How warm does Sainte-Marthe get in summer?
Afternoons average 26.5°C in July, the warmest time of year.
How cold does Sainte-Marthe get in winter?
At its coldest, in January, the normal low is −14.7°C.
How much rain and snow does Sainte-Marthe get?
1,178 mm a year counting snow as water. The wettest month is October (120 mm); the driest, February (72 mm).
How long does snow stay on the ground?
Count on about 128 days of snow cover a year, 1 cm or deeper.
Are these figures for Sainte-Marthe itself?
Only indirectly: the readings are made at Lachute, outside Sainte-Marthe.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Sainte-Marthe →
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).