Saint-Hyacinthe
September
Weather in Saint-Hyacinthe for September 2025
Your guide to Saint-Hyacinthe weather in September - trends and predictions
In general, the average temperature in Saint-Hyacinthe at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.1 °C by the end of September.
Saint-Hyacinthe sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
22°/10°
Temperatures
13 km/h
Avg max wind
82 %
Avg humidity
Saint-Hyacinthe in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  21° | 3  24° | 4 26° | 5 26° | 6 27° | 7  25° |
| 8 19° | 9 19° | 10 19° | 11 21° | 12 22° | 13  22° | 14 20° |
| 15  23° | 16 23° | 17 24° | 18 23° | 19  21° | 20 22° | 21 21° |
| 22 22° | 23 21° | 24 22° | 25  17° | 26 18° | 27 21° | 28 21° |
| 29 20° | 30 22° |
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Temperatures trend during September in Saint-Hyacinthe
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Mist | 24° /9° | 3.9 mm | 5 | |
| 2 Sept. | Partly cloudy | 21° /10° | 0.6 mm | 6 | |
| 3 Sept. | Overcast | 24° /10° | 0 mm | 5 | |
| 4 Sept. | Mist | 26° /14° | 0 mm | 7 | |
| 5 Sept. | Fog | 26° /16° | 0 mm | 6 | |
| 6 Sept. | Fog | 27° /17° | 0.1 mm | 6 | |
| 7 Sept. | Light rain shower | 25° /14° | 7.7 mm | 6 | |
| 8 Sept. | Light rain shower | 19° /11° | 7 mm | 5 | |
| 9 Sept. | Mist | 19° /8° | 0 mm | 5 | |
| 10 Sept. | Light rain shower | 19° /10° | 4 mm | 5 | |
| 11 Sept. | Fog | 21° /10° | 3.2 mm | 6 | |
| 12 Sept. | Mist | 22° /10° | 0.1 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 22° /12° | 18 mm | 5 | |
| 14 Sept. | Mist | 20° /12° | 0.1 mm | 5 | |
| 15 Sept. | Cloudy | 23° /9° | 0 mm | 6 | |
| 16 Sept. | Overcast | 23° /13° | 0 mm | 5 | |
| 17 Sept. | Partly cloudy | 24° /11° | 0.2 mm | 6 | |
| 18 Sept. | Light rain shower | 23° /13° | 0.7 mm | 6 | |
| 19 Sept. | Moderate rain | 21° /13° | 9.7 mm | 5 | |
| 20 Sept. | Fog | 22° /10° | 0 mm | 5 | |
| 21 Sept. | Partly cloudy | 21° /8° | 0 mm | 6 | |
| 22 Sept. | Mist | 22° /10° | 0 mm | 5 | |
| 23 Sept. | Overcast | 21° /11° | 0 mm | 5 | |
| 24 Sept. | Fog | 22° /10° | 0 mm | 6 | |
| 25 Sept. | Sunny | 17° /8° | 7.3 mm | 5 | |
| 26 Sept. | Partly cloudy | 18° /8° | 103.5 mm | 5 | |
| 27 Sept. | Mist | 21° /7° | 1.2 mm | 5 | |
| 28 Sept. | Mist | 21° /8° | 0 mm | 5 | |
| 29 Sept. | Mist | 20° /8° | 0 mm | 5 | |
| 30 Sept. | Cloudy | 22° /9° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Saint-Hyacinthe in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint-Hyacinthe forecast closer to your planned date for the most up-to-date weather information.
Saint-Hyacinthe in September - FAQ
What are the expected maximum and minimum temperatures in Saint-Hyacinthe during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint-Hyacinthe during September?
Moderate rainfall is anticipated in Saint-Hyacinthe during September, with a total of 92.8 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Saint-Hyacinthe during September?
The average wind speed in Saint-Hyacinthe during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint-Hyacinthe
Explore the daily rainfall trends and prepare for Saint-Hyacinthes September weather 💧
UV exposure in Saint-Hyacinthe during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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