Squamish-Lillooet Regional District (Whistler)
September
Weather in Squamish-Lillooet Regional District for September 2026
Your guide to Squamish-Lillooet Regional District weather in September - trends and predictions
In general, the average temperature in Squamish-Lillooet Regional District at the beginning of September is 26.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.7 °C by the end of September.
The climate of Squamish-Lillooet Regional District in September is notably wet, with an average of 12 rainy days, and a total of 214.2 mm of precipitation.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
18
Dry days
12
Rainy days
0
Snow days
17°/0°
Temperatures
8 km/h
Avg max wind
73 %
Avg humidity
Squamish-Lillooet Regional District Weather September
Move between months or click on a day
Temperatures trend during September in Squamish-Lillooet Regional District
See the weather trend as well as the moving average line
September weather in Squamish-Lillooet Regional District day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 28° /6° | 0 mm | 7 | |
| 2 Sept. |  Partly cloudy | 27° /6° | 0.2 mm | 7 | |
| 3 Sept. |  Patchy rain possible | 24° /6° | 0.1 mm | 6 | |
| 4 Sept. | Sunny | 28° /5° | 0 mm | 8 | |
| 5 Sept. | Sunny | 28° /7° | 0 mm | 7 | |
| 6 Sept. | Sunny | 28° /11° | 0 mm | 7 | |
| 7 Sept. | Sunny | 24° /9° | 2 mm | 6 | |
| 8 Sept. | Sunny | 20° /6° | 0 mm | 5 | |
| 9 Sept. |  Fog | 16° /2° | 0.3 mm | 4 | |
| 10 Sept. | Patchy rain possible | 20° /2° | 0.1 mm | 5 | |
| 11 Sept. | Patchy rain possible | 19° /2° | 0.1 mm | 5 | |
| 12 Sept. |  Light rain | 17° /1° | 0.6 mm | 4 | |
| 13 Sept. | Mist | 17° /1° | 2.4 mm | 4 | |
| 14 Sept. | Mist | 16° /1° | 4.1 mm | 4 | |
| 15 Sept. | Partly cloudy | 18° /1° | 0.2 mm | 5 | |
| 16 Sept. | Sunny | 22° /0° | 0 mm | 6 | |
| 17 Sept. | Mist | 17° /3° | 2.3 mm | 4 | |
| 18 Sept. | Patchy rain possible | 16° /0° | 0.7 mm | 4 | |
| 19 Sept. | Light rain | 14° /0° | 1 mm | 3 | |
| 20 Sept. |  Overcast | 14° /-1° | 1.4 mm | 3 | |
| 21 Sept. | Partly cloudy | 15° /-2° | 4.3 mm | 4 | |
| 22 Sept. | Sunny | 15° /2° | 5.1 mm | 4 | |
| 23 Sept. | Light rain shower | 15° /2° | 2.4 mm | 3 | |
| 24 Sept. | Patchy rain possible | 15° /2° | 2.1 mm | 4 | |
| 25 Sept. |  Moderate or heavy rain with thunder | 12° /-1° | 74.4 mm | 3 | |
| 26 Sept. |  Moderate or heavy rain shower | 8° /-3° | 40.7 mm | 2 | |
| 27 Sept. |  Moderate rain | 9° /-3° | 29.1 mm | 2 | |
| 28 Sept. | Moderate or heavy rain with thunder | 11° /-3° | 4.4 mm | 3 | |
| 29 Sept. |  Thundery outbreaks possible | 9° /-3° | 21.7 mm | 3 | |
| 30 Sept. | Partly cloudy | 11° /-5° | 0.9 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Squamish-Lillooet Regional District 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 Squamish-Lillooet Regional District forecast closer to your planned date for the most up-to-date weather information.
Change Month
Squamish-Lillooet Regional District in September - FAQ
What are the expected maximum and minimum temperatures in Squamish-Lillooet Regional District during September?
During September, expect a variety of temperatures with highs around 17° and lows near 0°, suitable for diverse activities and preferences.
How much rainfall should be expected in Squamish-Lillooet Regional District during September?
Significant rainfall exceeding 214.2 mm is expected in Squamish-Lillooet Regional District during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Squamish-Lillooet Regional District during September?
The average wind speed in Squamish-Lillooet Regional District during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Squamish-Lillooet Regional District
Explore the daily rainfall trends and prepare for Squamish-Lillooet Regional Districts September weather 💧
Typically, Squamish-Lillooet Regional District has 12 rainy days in September with a total of 214.2 mm of rainfall.
UV exposure in Squamish-Lillooet Regional District during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Squamish-Lillooet Regional District
Select a location for an accurate weather forecast
More Locations Quick links
More Squamish-Lillooet Regional District weather pages
You are here
Where is Squamish-Lillooet Regional District?Get accurate weather forecasts for Squamish-Lillooet Regional District, located at latitude 50.118 and longitude -122.954. Stay updated with localized weather information tailored for Squamish-Lillooet Regional District.
Found a mistake?
We appreciate your attention to details. Tell us here.