Photo: Félix Mathieu-Bégin · CC BY-SA 4.0Midwinter lows in Trécesson sink below those of 89% of Canadian towns
Sunny July days climb to about 23.7°C. Winter and summer sit 44°C apart. Summers stay cool: July afternoons here are cooler than in 71% of Canadian towns. An umbrella or a shovel earns its place on about 135 days a year with 1 mm or more.
Far-off figures: ECCC’s closest normals for Trécesson come from Rouyn, 68 km south-west, so take them as the area’s climate.
A year in Trécesson at a glance
Each month’s typical high and low, in °C.
What stands out about Trécesson’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Trécesson feels like
Each season’s and each month’s usual high and low, 1991–2020.
188 frost days and 86 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. Some 44 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 868 mm a year
The most falls in September, the least in February.
Rain and snow by month
Millimetres
Precipitation: Val-d'Or, 69 km away (Rouyn records no complete year of it).
Heating a home in Trécesson
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. Over a year, a home here needs more heating than 86% of Canadian towns.
Living with Trécesson’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plan time outside for Jun, Jul and Aug: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →Count on some 80 days a year when the wind makes it feel below −20.
Muggy heat with a humidex over 30 arrives on about 18 days a year.
Storms, floods and heat waves sit outside these normals; Trécesson’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Rouyn
The page’s figures are ECCC’s 1991–2020 normals for Rouyn, one of its 450 normals locations.
| Distance from the town | 68 km south-west |
| Station altitude | 318 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Precipitation from | Val-d'Or, 69 km |
| Snowfall from | No location within 100 km |
| Coldest reading, 1991–2020 | −40.1°C |
| Hottest reading, 1991–2020 | 36.4°C |
| Average wind | 12.6 km/h on average, most often from the south |
| Next-nearest location | Val-d'Or, 69 km |
How Trécesson compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Quebec.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Trécesson’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Trécesson Rouyn | 23.7°C | −20.1°C | 868 mm |
| Amos 12 km · Val-d'Or | 23.8°C about the same | −22.2°C 2.1°C colder | 868 mm |
Trécesson weather by month
Each month’s normals, 1991–2020: high, low, mean and precipitation.
| Month | High | Low | Mean | Rain & snow |
|---|---|---|---|---|
| January | −10.0°C | −20.1°C | −15.1°C | 55 mm |
| February | −7.7°C | −18.9°C | −13.3°C | 42 mm |
| March | −1.0°C | −12.5°C | −6.8°C | 47 mm |
| April | 6.8°C | −4.0°C | 1.4°C | 65 mm |
| May | 16.1°C | 4.1°C | 10.1°C | 69 mm |
| June | 21.6°C | 9.9°C | 15.8°C | 84 mm |
| July | 23.7°C | 12.9°C | 18.3°C | 101 mm |
| August | 21.9°C | 11.5°C | 16.7°C | 93 mm |
| September | 17.5°C | 7.6°C | 12.6°C | 102 mm |
| October | 9.2°C | 1.4°C | 5.3°C | 82 mm |
| November | 1.0°C | −5.9°C | −2.5°C | 75 mm |
| December | −6.1°C | −14.3°C | −10.2°C | 54 mm |
| Year | 7.8°C | −2.4°C | 2.7°C | 868 mm |
The month with the widest range: March, −33.1°C to 25.6°C
Two years in three, January’s average falls within 3.2°C of its normal of −15.1°C; August keeps to within 1.2°C.
Where Trécesson’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Rouyn, 1991–2020.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- Not on this page: snowfall (no location within 100 km publishes a full year of it), sunshine (none for 1991–2020) and an altitude correction.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Trécesson’s climate
How warm does Trécesson get in summer?
Afternoons average 23.7°C in July, the warmest time of year.
How cold does Trécesson get in winter?
January nights average −20.1°C, the coldest of the year.
How much rain and snow does Trécesson get?
Count on roughly 868 mm a year, heaviest in September (102 mm) and lightest in February (42 mm).
Are these figures for Trécesson itself?
Not really: Rouyn, the closest location with normals, lies well away from Trécesson.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Trécesson →
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).