Montreal in september: average Weather, Temperature and Climate
Weather in Montreal in september 2025
The weather in Montreal in september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
58°F
Clear/Sunny
40% of time
25%
16%
11%
Weather at 12pm
70°F
Clear/Sunny
44% of time
20%
19%
10%
Weather at 6pm
63°F
Clear/Sunny
44% of time
21%
15%
10%
Weather at 3am
58°F
37%
23%
14%
14%
Evolution of daily average temperature and precipitation in Montreal in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Montreal in september.
The climate of Montreal in september is good
The month of September is one of the best moments to discover the city of Montreal, with pleasant climatic conditions. Freshness begins to be felt in the morning, however with rising temperatures over the hours, one will have the right to pleasant middays. The climate throughout September in Montreal is favorable for sightseeing.
Montreal throughout the First Ten Days of September
The first days of September are favorable to discover the city, with a comfortable warmth. Simply wear light sweaters in order to forget the coolness of the morning.
Montreal throughout the Second Ten Days of September
Temperatures are falling and it is not possible to go out without covering up comfortably - even if the weather in Montreal throughout September is generally reassuring.
Montreal throughout the Third Ten Days of September
As in the first days of the month, the weather is again pleasant due to the rising temperatures. Thanks to the regression of the rains, one will enjoy the sun a little longer.
Seasonal average climate and temperature of Montreal in september
Check below seasonal norms These statistics are compiled from the weather statements of the past years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 72°F | ||||
| Lowest temperature | 58°F | ||||
| Highest record temperature | 90°F (2017) | ||||
| Lowest record temperature | 40°F (2014) | ||||
| Number of days at +86°F | 1 day(s) (3%) | ||||
| Number of days at +65°F | 24 day(s) (80%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 56°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5in | ||||
| Number of days with rainfall | 6 day(s) (21%) | ||||
| Record daily rainfall | 2.8in (2010) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 83% | ||||
| Visibility | 9.07km | ||||
| Cloud cover | 38% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:33 | ||||
| Time of sunset | 18:05 | ||||
| Length of day | 12:32 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Montreal in september 2024:
63°F to 76°F
54°F to 61°F
49°F to 68°F
56°F to 74°F
59°F to 77°F
59°F to 76°F
54°F to 67°F
45°F to 54°F
45°F to 63°F
49°F to 65°F
52°F to 70°F
59°F to 76°F
61°F to 79°F
63°F to 79°F
65°F to 79°F
65°F to 81°F
65°F to 81°F
61°F to 81°F
63°F to 85°F
61°F to 79°F
56°F to 72°F
58°F to 70°F
56°F to 65°F
56°F to 74°F
54°F to 59°F
56°F to 63°F
56°F to 68°F
58°F to 65°F
56°F to 68°F
56°F to 72°F
Map: other cities in Quebec in september
Cities near Montreal:
| Coteau-du-Lac in september | good weather |
| Sainte-Victoire in september | good weather |
| Granby in september | good weather |
| Sainte-Anne-de-la-Rochelle in september | good weather |
| Drummondville in september | good weather |
| Parc national du Mont-Tremblant in september | good weather |
| Trois-Rivières in september | good weather |
| Bécancour in september | good weather |
| Sherbrooke in september | good weather |
| Gatineau in september | good weather |
| Parc national du Mont-Mégantic in september | good weather |
| Mont-Laurier in september | good weather |
Click over cities on the map for information about the weather in september.
Montreal
perfect weather
good
tolerable
bad
very bad
Weather data for Montreal in september:
Weather data for Montreal for september are derived from an average of the weather forecast since 2009 in Montreal. There is a margin of error and these forecasts are to be considered as general information only. The weather in Montreal can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Montreal.