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Mont-Tremblant Weather in September
September in Mont-Tremblant brings pleasant temperatures, with highs of 19°C (66°F) and nights dropping to 8°C (46°F). Rainfall is on the higher side this month, averaging around 113 mm (4.4 in), so keep a rain jacket handy.
Rainfall in Mont-Tremblant in September
Past climate data indicates that roughly 13 days will see rain, totalling around 113 mm (4.4 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Mont-Tremblant in September
In September, expect pleasant temperatures in Mont-Tremblant, with highs of 19°C (66°F) and lows of 8°C (46°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Mont-Tremblant.
Mont-Tremblant Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
19°C (66°F)
Chance of Rain
43%
Precipitation
113 mm (4.4 in)
Rainy days
13 days
Mont-Tremblant Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mont-Tremblant - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mont-Tremblant typically drop from around 20°C (68°F) at the start of September to approximately 15°C (59°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 8°C (46°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Mont-Tremblant in September
Browse day-by-day weather records for Mont-Tremblant spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mont-Tremblant historical weather extremes in September
The extremes listed below come from historical weather data collected in Mont-Tremblant from 1976 through 2026.
- The warmest day in September was on September 9, 2002, with a maximum of 35°C (95°F).
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Mont-Tremblant in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Mont-Tremblant in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping3/10 -
Outdoor sports9/10
Mont-Tremblant 3-Day Forecast
More climate data for Mont-Tremblant
See the full Mont-Tremblant climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) Bucket list
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