Westmount
September
Weather in Westmount for September 2025
Your guide to Westmount weather in September - trends and predictions
In general, the average temperature in Westmount at the beginning of September is 25.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.9 °C by the end of September.
Westmount experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 149.1 mm.
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Temperatures
Rain 🌧️
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20
Dry days
10
Rainy days
0
Snow days
22°/12°
Temperatures
14 km/h
Avg max wind
73 %
Avg humidity
Westmount in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 22° | 3 24° | 4 27° | 5 28° | 6 27° | 7  24° |
| 8  20° | 9  20° | 10  20° | 11  22° | 12 24° | 13  22° | 14 21° |
| 15 24° | 16 24° | 17  27° | 18 24° | 19 23° | 20 23° | 21 21° |
| 22 22° | 23 20° | 24 23° | 25  18° | 26 19° | 27 20° | 28 21° |
| 29 21° | 30 24° |
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Temperatures trend during September in Westmount
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° /11° | 3.1 mm | 5 | |
| 2 Sept. | Mist | 22° /11° | 0 mm | 5 | |
| 3 Sept. | Mist | 24° /12° | 0 mm | 6 | |
| 4 Sept. | Mist | 27° /15° | 0 mm | 7 | |
| 5 Sept. | Mist | 28° /17° | 0 mm | 7 | |
| 6 Sept. | Mist | 27° /18° | 0.1 mm | 6 | |
| 7 Sept. | Patchy light rain with thunder | 24° /14° | 8.3 mm | 5 | |
| 8 Sept. | Light rain shower | 20° /12° | 20.8 mm | 5 | |
| 9 Sept. | Cloudy | 20° /9° | 0 mm | 5 | |
| 10 Sept. | Heavy rain | 20° /12° | 4.8 mm | 5 | |
| 11 Sept. | Overcast | 22° /11° | 2.7 mm | 6 | |
| 12 Sept. | Overcast | 24° /13° | 1.4 mm | 6 | |
| 13 Sept. | Moderate rain | 22° /14° | 7.7 mm | 6 | |
| 14 Sept. | Overcast | 21° /13° | 0 mm | 6 | |
| 15 Sept. | Mist | 24° /12° | 0 mm | 6 | |
| 16 Sept. | Overcast | 24° /15° | 0 mm | 6 | |
| 17 Sept. | Partly cloudy | 27° /14° | 0 mm | 7 | |
| 18 Sept. | Light rain shower | 24° /14° | 0.8 mm | 6 | |
| 19 Sept. | Heavy rain | 23° /15° | 9.8 mm | 5 | |
| 20 Sept. | Cloudy | 23° /12° | 0 mm | 6 | |
| 21 Sept. | Mist | 21° /9° | 0 mm | 5 | |
| 22 Sept. | Mist | 22° /11° | 0 mm | 5 | |
| 23 Sept. | Mist | 20° /11° | 0 mm | 5 | |
| 24 Sept. | Partly cloudy | 23° /12° | 0 mm | 6 | |
| 25 Sept. | Sunny | 18° /10° | 16.8 mm | 5 | |
| 26 Sept. | Partly cloudy | 19° /9° | 72.7 mm | 5 | |
| 27 Sept. | Mist | 20° /9° | 0 mm | 5 | |
| 28 Sept. | Mist | 21° /11° | 0 mm | 5 | |
| 29 Sept. | Mist | 21° /10° | 0 mm | 5 | |
| 30 Sept. | Mist | 24° /10° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Westmount 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 Westmount forecast closer to your planned date for the most up-to-date weather information.
Westmount in September - FAQ
What are the expected maximum and minimum temperatures in Westmount during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Westmount during September?
Significant rainfall exceeding 149.1 mm is expected in Westmount during September, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Westmount during September?
The average wind speed in Westmount during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Westmount
Explore the daily rainfall trends and prepare for Westmounts September weather 💧
UV exposure in Westmount during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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