Weather in Trois-Rivières for September 2025
Until now, September 2025 in Trois-Rivières has been nearly identical to the historical average, with a temperature of 22 °C (showing only a slight deviation of -0.2 °C).
The forecast for the next days in Trois-Rivières predicts temperatures to be around 22 °C, close to the historical average.
In general, the average temperature in Trois-Rivières at the beginning of September is 23.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.
Trois-Rivières experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 127.3 mm.
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Trois-Rivières Weather September
Temperatures trend during September in Trois-Rivières
September weather in Trois-Rivières day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 25° /9° | 1.7 mm | 6 | |
| 2 Sept. |  Mist | 21° /11° | 0 mm | 5 | |
| 3 Sept. | Fog | 24° /12° | 0 mm | 6 | |
| 4 Sept. | Fog | 26° /13° | 0 mm | 6 | |
| 5 Sept. | Fog | 25° /14° | 7.1 mm | 6 | |
| 6 Sept. | Fog | 24° /14° | 6 mm | 5 | |
| 7 Sept. |  Patchy light rain with thunder | 22° /13° | 6.2 mm | 5 | |
| 8 Sept. |  Light rain shower | 18° /10° | 5.1 mm | 5 | |
| 9 Sept. | Mist | 21° /7° | 0 mm | 5 | |
| 10 Sept. | Mist | 21° /8° | 0 mm | 5 | |
| 11 Sept. | Mist | 21° /11° | 0 mm | 5 | |
| 12 Sept. |  Overcast | 20° /9° | 0.1 mm | 5 | |
| 13 Sept. |  Heavy rain | 22° /11° | 8.6 mm | 5 | |
| 14 Sept. | Fog | 21° /11° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 21° /9° | 0 mm | 5 | |
| 16 Sept. |  Sunny | 26° /6° | 0 mm | 1.2 | |
| 17 Sept. | Partly cloudy | 24° /7° | 0 mm | 1.2 | |
| 18 Sept. | Patchy rain possible | 25° /12° | 3.6 mm | 1 | |
| 19 Sept. | Sunny | 17° /7° | 0 mm | 0.6 | |
| 20 Sept. | Sunny | 17° /3° | 0 mm | 0 | |
| 21 Sept. | Sunny | 21° /4° | 0 mm | 4 | |
| 22 Sept. | Patchy rain possible | 29° /13° | 0.8 mm | 4 | |
| 23 Sept. | Patchy rain possible | 30° /16° | 0.2 mm | 5 | |
| 24 Sept. | Sunny | 27° /14° | 0 mm | 5 | |
| 25 Sept. |  Moderate rain | 21° /16° | 5.2 mm | 4 | |
| 26 Sept. | Patchy rain possible | 22° /15° | 1.8 mm | 4 | |
| 27 Sept. | Patchy rain possible | 17° /14° | 1.3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 17° /13° | 0.1 mm | 3 | |
| 29 Sept. | Patchy rain possible | 17° /13° | 0.1 mm | 3 | |
| 30 Sept. | Mist | 21° /7° | 0 mm | 5 | |
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Trois-Rivières in September - FAQ
September rainfall patterns in Trois-Rivières
UV exposure in Trois-Rivières during September
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Where is Trois-Rivières?Get accurate weather forecasts for Trois-Rivières, located at latitude 46.345 and longitude -72.548. Stay updated with localized weather information tailored for Trois-Rivières.