Weather in Saint-Hyacinthe for September 2026
Until now, September 2026 in Saint-Hyacinthe has been nearly identical to the historical average, with a temperature of 24.1 °C (showing only a slight deviation of 0.4 °C).
Expect cooler weather in the next days in Saint-Hyacinthe with the forecast suggesting a temperature of 19 °C, lower than the historical average.
In general, the average temperature in Saint-Hyacinthe at the beginning of September is 24.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.3 °C by the end of September.
The climate of Saint-Hyacinthe in September is notably wet, with an average of 13 rainy days, and a total of 166.8 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Saint-Hyacinthe Weather September
Temperatures trend during September in Saint-Hyacinthe
September weather in Saint-Hyacinthe day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Mist | 24° /9° | 2 mm | 5 | |
| 2 Sept. |  Partly cloudy | 23° /12° | 8.9 mm | 5 | |
| 3 Sept. |  Overcast | 25° /13° | 55.9 mm | 5 | |
| 4 Sept. | Partly cloudy | 26° /13° | 1.1 mm | 6 | |
| 5 Sept. | Fog | 25° /14° | 15.1 mm | 5 | |
| 6 Sept. | Fog | 24° /14° | 12.3 mm | 6 | |
| 7 Sept. |  Light rain shower | 24° /12° | 5.6 mm | 5 | |
| 8 Sept. | Light rain shower | 21° /10° | 14.6 mm | 4 | |
| 9 Sept. |  Sunny | 21° /8° | 3.2 mm | 4 | |
| 10 Sept. | Light rain shower | 21° /10° | 5.4 mm | 5 | |
| 11 Sept. | Sunny | 19° /9° | 0 mm | 5.1 | |
| 12 Sept. | Overcast | 22° /10° | 0 mm | 5.1 | |
| 13 Sept. | Overcast | 25° /17° | 4.1 mm | 4.2 | |
| 14 Sept. | Sunny | 18° /9° | 0 mm | 4.8 | |
| 15 Sept. | Overcast | 18° /7° | 0 mm | 4 | |
| 16 Sept. | Overcast | 20° /14° | 5.4 mm | 4 | |
| 17 Sept. | Overcast | 19° /14° | 3.3 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /11° | 0.3 mm | 5 | |
| 19 Sept. | Sunny | 18° /9° | 0.2 mm | 5 | |
| 20 Sept. | Sunny | 18° /7° | 0 mm | 5 | |
| 21 Sept. | Sunny | 21° /11° | 0 mm | 6 | |
| 22 Sept. | Overcast | 19° /10° | 0 mm | 5 | |
| 23 Sept. | Overcast | 13° /10° | 3.3 mm | 3 | |
| 24 Sept. | Sunny | 19° /8° | 0 mm | 5 | |
| 25 Sept. |  Moderate or heavy rain shower | 18° /10° | 23.1 mm | 5 | |
| 26 Sept. | Partly cloudy | 19° /9° | 69 mm | 5 | |
| 27 Sept. | Fog | 21° /5° | 0.8 mm | 5 | |
| 28 Sept. | Mist | 22° /10° | 0 mm | 5 | |
| 29 Sept. | Mist | 22° /8° | 0 mm | 5 | |
| 30 Sept. |  Cloudy | 21° /8° | 0 mm | 5 | |
| Next | |||||
Saint-Hyacinthe in September - FAQ
What are the expected maximum and minimum temperatures in Saint-Hyacinthe during September?
How much rainfall should be expected in Saint-Hyacinthe during September?
What are the typical wind conditions in Saint-Hyacinthe during September?
September rainfall patterns in Saint-Hyacinthe
UV exposure in Saint-Hyacinthe during September
Quick links
Where is Saint-Hyacinthe?Get accurate weather forecasts for Saint-Hyacinthe, located at latitude 45.631 and longitude -72.957. Stay updated with localized weather information tailored for Saint-Hyacinthe.