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Montreal in September - Weather and Event Guide

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With temperatures dipping back to much more civilized numbers in the 60s and little humidity, Montreal is a great city to visit in September.

  • Average September temperature: 15.6ºC / 60ºF
  • September average high: 20.6ºC / 69ºF
  • September average low: 9ºC / 48ºF
Expect rain about 7 - 9 days out of 30 in September.

Top Montreal Attractions | Montreal Travel Guide | Old Montreal

What to Pack for Montreal in September:
Visitors to Montreal in September should be prepared for a variety of temperatures. Pack clothing that can be layered. Pack your t-shirts, but just be sure to have a sweater or jacket on hand.
  • Shorts; t-shirts; long sleeve shirts; sweaters / sweatshirts; jacket; long pants; closed-toe shoes.
  • Umbrella
  • Sunhat, sunglasses, sunscreen
  • Montreal in September Perks:
    • Lovely weather - no longer hot and humid and not yet cold. Many outdoor activities can still be enjoyed comfortably with just a little extra clothing.
    • Fewer tourists means travel and hotel deals.
    • Start of Fall Foliage Season in Canada.
    Good to Know about Montreal in September:
    • The first Monday of September is the Labour Day holiday. Banks and many stores are closed. Expect crowds.
    Montreal in September - Events & Highlights:
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