Photo: Fralambert · CC BY-SA 3.0Snowy winters: about 274 cm a year in Hérouxville, more than in 90% of Canadian towns
The coldest hours of a January night bottom out at −14.1°C on average. Temperatures cover 39°C across the year, low to high. By precipitation alone, it ranks wetter than 80% of Canadian towns. Expect about 145 frosty starts a year, days when the air falls to freezing.
Hérouxville has no ECCC normals station of its own: every figure here comes from Trois-Rivières, 36 km south.
A year in Hérouxville at a glance
Each month’s typical high and low, in °C.
What stands out about Hérouxville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Hérouxville feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 145 days, 20°C on 104
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
Rain and melted snow: about 1,101 mm a year
July is the wettest month and February the driest. On about 132 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 274 cm of snow a year
The snow season runs October to April; December brings the most, about 69 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Hérouxville
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A heating degree day is one degree of shortfall below 18°C for one day, summed over the year.
Living with Hérouxville’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul, Aug and Sep.
Parks & trails →Expect around 42 days a year when the wind chill sinks below −20.
Roughly 37 days a year feel hotter than 30 once humidity is counted.
What averages leave out, the floods and ice storms, is on Hérouxville’s hazards page.
Flood & hazards →ECCC’s normals location: Trois-Rivières
Trois-Rivières is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 36 km south |
| Station altitude | 6 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −32.3°C |
| Hottest reading, 1991–2020 | 34.0°C |
| Average wind | 13.4 km/h on average, most often from the south-west |
| Next-nearest location | Fortierville, 49 km |
How Hérouxville 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
Places around Hérouxville whose figures come from another normals location. The nearest place to Hérouxville with figures is 20 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Hérouxville Trois-Rivières | 25.1°C | −14.1°C | 1,101 mm |
| Sainte-Thècle 20 km · Fortierville | 25.5°C about the same | −16.9°C 2.8°C colder | 1,138 mm |
Hérouxville weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.6°C | −14.1°C | −9.9°C | 83 mm | 61 cm |
| February | −3.9°C | −13.1°C | −8.5°C | 66 mm | 53 cm |
| March | 1.2°C | −7.3°C | −3.1°C | 76 mm | 50 cm |
| April | 8.8°C | 0.3°C | 4.6°C | 87 mm | 14 cm |
| May | 17.3°C | 7.9°C | 12.6°C | 83 mm | under 1 cm |
| June | 22.5°C | 13.6°C | 18.1°C | 105 mm | 0 cm |
| July | 25.1°C | 16.7°C | 20.9°C | 125 mm | 0 cm |
| August | 24.1°C | 15.6°C | 19.9°C | 96 mm | 0 cm |
| September | 19.8°C | 11.0°C | 15.5°C | 97 mm | 0 cm |
| October | 12.2°C | 5.1°C | 8.5°C | 101 mm | 4 cm |
| November | 4.9°C | −1.3°C | 1.8°C | 88 mm | 24 cm |
| December | −2.0°C | −8.6°C | −5.3°C | 95 mm | 69 cm |
| Year | 10.4°C | 2.1°C | 6.2°C | 1,101 mm | 274 cm |
In January, anything from −32.3°C to 12.0°C
January is the least predictable month: about two years in three its average lands within 2.8°C of the normal, −9.9°C. June is the steadiest, within 1.0°C.
Where Hérouxville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Trois-Rivières, the nearest location with a full year of temperatures.
- 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 (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Hérouxville’s climate
How warm does Hérouxville get in summer?
A normal July afternoon tops out at about 25.1°C, the year’s high point.
How cold does Hérouxville get in winter?
At its coldest, in January, the normal low is −14.1°C.
How much rain and snow does Hérouxville get?
About 1,101 mm a year, rain and melted snow together. July is the wettest month (125 mm) and February the driest (66 mm).
Are these figures for Hérouxville itself?
No, the station behind them is Trois-Rivières, beyond Hérouxville’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Hérouxville →
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).