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
Until now, September 2026 in Squamish-Lillooet Regional District has been significantly cooler than historical averages by 6.4 °C, with average temperature of 14.7 °C.
The forecast for the next days in Squamish-Lillooet Regional District predicts a temperature of 14.9 °C, which is cooler than the historical average.
In general, the average temperature in Squamish-Lillooet Regional District at the beginning of September is 22.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.1 °C by the end of September.
Squamish-Lillooet Regional District experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 200.5 mm.
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Temperatures
Rain 🌧️
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21
Dry days
9
Rainy days
0
Snow days
17°/2°
Temperatures
8 km/h
Avg max wind
74 %
Avg humidity
Squamish-Lillooet Regional District Weather September
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Temperatures trend during September in Squamish-Lillooet Regional District
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September weather in Squamish-Lillooet Regional District day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 24° /6° | 0.8 mm | 0 cm | |
| 2 Sept. |  Partly cloudy | 22° /5° | 6.6 mm | 0 cm | |
| 3 Sept. |  Patchy rain possible | 19° /5° | 1.7 mm | 0 cm | |
| 4 Sept. | Sunny | 23° /4° | 9.4 mm | 0 cm | |
| 5 Sept. | Sunny | 23° /6° | 4 mm | 0 cm | |
| 6 Sept. | Sunny | 24° /9° | 0 mm | 0 cm | |
| 7 Sept. | Sunny | 21° /7° | 1.3 mm | 0 cm | |
| 8 Sept. | Sunny | 19° /6° | 0 mm | 0 cm | |
| 9 Sept. |  Fog | 17° /4° | 0.2 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 19° /4° | 0.1 mm | 0 cm | |
| 11 Sept. | Patchy rain possible | 18° /3° | 1.2 mm | 0 cm | |
| 12 Sept. | Sunny | 17° /6° | 0 mm | 0 cm | |
| 13 Sept. | Sunny | 13° /4° | 0.1 mm | 0 cm | |
| 14 Sept. | Patchy rain possible | 7° /3° | 0.4 mm | 0 cm | |
| 15 Sept. | Patchy rain possible | 15° /3° | 0.9 mm | 0 cm | |
| 16 Sept. | Sunny | 16° /7° | 0 mm | 0 cm | |
| 17 Sept. | Sunny | 19° /10° | 0 mm | 0 cm | |
| 18 Sept. | Sunny | 19° /11° | 0 mm | 0 cm | |
| 19 Sept. |  Overcast | 17° /12° | 0 mm | 0 cm | |
| 20 Sept. | Sunny | 15° /11° | 0 mm | 0 cm | |
| 21 Sept. | Overcast | 15° /10° | 0 mm | 0 cm | |
| 22 Sept. | Sunny | 16° /10° | 0 mm | 0 cm | |
| 23 Sept. | Sunny | 17° /11° | 0 mm | 0 cm | |
| 24 Sept. | Sunny | 13° /1° | 0.1 mm | 0 cm | |
| 25 Sept. | Sunny | 10° /-1° | 0 mm | 0 cm | |
| 26 Sept. |  Moderate or heavy rain shower | 8° /-3° | 40.7 mm | 0 cm | |
| 27 Sept. |  Moderate rain | 9° /-3° | 29.1 mm | 0 cm | |
| 28 Sept. |  Moderate or heavy rain with thunder | 11° /-3° | 4.4 mm | 0 cm | |
| 29 Sept. |  Thundery outbreaks possible | 9° /-3° | 21.7 mm | 0 cm | |
| 30 Sept. | Partly cloudy | 11° /-5° | 0.9 mm | 0.7 cm | |
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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.
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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 2°, suitable for diverse activities and preferences.
How much rainfall should be expected in Squamish-Lillooet Regional District during September?
Significant rainfall exceeding 200.5 mm is expected in Squamish-Lillooet Regional District during September, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Squamish-Lillooet Regional District in September 2026?
Squamish-Lillooet Regional District typically sees 0.7 cm of snowfall during September.
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.
Squamish-Lillooet Regional District snow forecast September 2026
Track daily snowfall levels and discover Squamish-Lillooet Regional District’s snowy potential this September ❄️
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 9 rainy days in September with a total of 200.5 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 ☀️
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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.
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