Trois-Rivières weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Poor
Best time to visit: July – August
What is the weather like in Trois-Rivières in September?
In September, Trois-Rivières is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 94 mm in total. All in all, September is not an ideal month for a holiday in Trois-Rivières.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 72 | 32 | 14 |
| Day | 24° | 20° | 13° |
| Night | 16° | 12° | 6° |
| Sun | 7 h | 6 h | 4 h |
| Rain days | 12 | 11 | 11 |
More details for September
- Daylight
- 12 h 38 min06:27 – 19:04
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/Toronto
How the score comes together
- Temperatureweight 35 %18 %
- Seaweight 25 %18 %
- Sunshineweight 20 %50 %
- Few rainy daysweight 20 %54 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Trois-Rivières in September: quick answers
Is Trois-Rivières hot in September?
No. In September, Trois-Rivières is mild: daytime highs average 20 °C and nights drop to about 12 °C.
Does it rain much in Trois-Rivières in September?
Rain is frequent, with about 11 rainy days and 94 mm in total.
Trois-Rivières month by month
The whole year in Trois-RivièresAll destinations: CanadaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences