Saint-Jean-sur-Richelieu
September
Weather in Saint-Jean-sur-Richelieu for September 2027
Your guide to Saint-Jean-sur-Richelieu weather in September - trends and predictions
In general, the average temperature in Saint-Jean-sur-Richelieu at the beginning of September is 24.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.7 °C by the end of September.
Saint-Jean-sur-Richelieu experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 226.6 mm.
Is September a good time to visit Saint-Jean-sur-Richelieu? check out the best time to travel to Saint-Jean-sur-Richelieu page.
✨ Is September a good time to visit Saint-Jean-sur-Richelieu? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
21°/11°
Temperatures
17 km/h
Avg max wind
78 %
Avg humidity
Saint-Jean-sur-Richelieu Weather September
Move between months or click on a day
Temperatures trend during September in Saint-Jean-sur-Richelieu
See the weather trend as well as the moving average line
September weather in Saint-Jean-sur-Richelieu day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 25° /11° | 1.3 mm | 6 | |
| 2 Sept. |  Moderate rain | 23° /13° | 13.4 mm | 5 | |
| 3 Sept. |  Heavy rain | 25° /14° | 47.6 mm | 5 | |
| 4 Sept. |  Light rain | 26° /15° | 5.2 mm | 6.9 | |
| 5 Sept. | Moderate rain | 24° /14° | 12.7 mm | 5 | |
| 6 Sept. | Moderate rain | 24° /15° | 12.1 mm | 6 | |
| 7 Sept. | Light rain | 24° /13° | 4.2 mm | 6 | |
| 8 Sept. | Moderate rain | 20° /11° | 10.9 mm | 4 | |
| 9 Sept. | Light rain | 20° /9° | 4.5 mm | 4 | |
| 10 Sept. | Moderate rain | 21° /11° | 14.8 mm | 6 | |
| 11 Sept. | Patchy rain possible | 21° /11° | 2.3 mm | 6 | |
| 12 Sept. |  Mist | 22° /9° | 0.3 mm | 6 | |
| 13 Sept. | Moderate rain | 21° /13° | 10.3 mm | 4 | |
| 14 Sept. | Mist | 20° /12° | 0.5 mm | 5 | |
| 15 Sept. |  Overcast | 22° /10° | 0 mm | 5 | |
| 16 Sept. | Overcast | 24° /12° | 0.1 mm | 5 | |
| 17 Sept. | Mist | 25° /12° | 0.1 mm | 5 | |
| 18 Sept. | Fog | 23° /13° | 0.3 mm | 5.6 | |
| 19 Sept. | Light rain | 19° /10° | 5.2 mm | 5 | |
| 20 Sept. |  Cloudy | 18° /7° | 0.7 mm | 4 | |
| 21 Sept. |  Partly cloudy | 19° /7° | 0 mm | 5 | |
| 22 Sept. | Overcast | 19° /8° | 0.4 mm | 5 | |
| 23 Sept. | Light rain | 20° /10° | 6.5 mm | 5 | |
| 24 Sept. |  Sunny | 21° /10° | 0 mm | 5 | |
| 25 Sept. | Moderate rain | 19° /10° | 23 mm | 4.9 | |
| 26 Sept. | Heavy rain | 20° /11° | 49.6 mm | 4 | |
| 27 Sept. | Mist | 19° /7° | 0.3 mm | 3 | |
| 28 Sept. | Mist | 20° /11° | 0.3 mm | 4 | |
| 29 Sept. | Mist | 20° /9° | 0.1 mm | 4.6 | |
| 30 Sept. | Mist | 20° /9° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Saint-Jean-sur-Richelieu 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-Jean-sur-Richelieu forecast closer to your planned date for the most up-to-date weather information.
Change Month
Saint-Jean-sur-Richelieu in September - FAQ
What are the expected maximum and minimum temperatures in Saint-Jean-sur-Richelieu during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Saint-Jean-sur-Richelieu during September?
Significant rainfall exceeding 226.6 mm is expected in Saint-Jean-sur-Richelieu during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Saint-Jean-sur-Richelieu during September?
The average wind speed in Saint-Jean-sur-Richelieu during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint-Jean-sur-Richelieu
Explore the daily rainfall trends and prepare for Saint-Jean-sur-Richelieus September weather 💧
Typically, Saint-Jean-sur-Richelieu has 8 rainy days in September with a total of 226.6 mm of rainfall.
UV exposure in Saint-Jean-sur-Richelieu during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Saint-Jean-sur-Richelieu weather pages
You are here
Where is Saint-Jean-sur-Richelieu?Get accurate weather forecasts for Saint-Jean-sur-Richelieu, located at latitude 45.307 and longitude -73.263. Stay updated with localized weather information tailored for Saint-Jean-sur-Richelieu.
Found a mistake?
We appreciate your attention to details. Tell us here.