October weather forecast
Montreal, Canada

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An extension of the St. Florence river with a far view of the city of Montreal, Canada
An extension of the St. Florence river with a far view of the city of Montreal, Canada

Weather in October

Montreal experiences significant cooling with October's average high temperature lowering to 12.8°C (55°F) from September's 20.8°C (69.4°F). This time of year, the city is beautifully adorned in vibrant fall foliage, eliciting a picturesque view. The noticeable drop in temperature initiates the move from outdoor activities to indoor pursuits. As the leaves continue to fall and temperatures dwindle, the city imeets Autumn in its full glory with harvest celebrations and Halloween events. It’s the perfect season to explore the city’s indoor arts scene or enjoy some heart-warming regional cuisine.

Temperature

As October arrives, Montreal's weather displays a notable decrease in high-temperatures, falling from September's agreeable 20.8°C (69.4°F) to a cool 12.8°C (55°F). Montreal's temperature in October lowers to a consistent average of 6.1°C (43°F) during the nights.

Humidity

The average relative humidity in October in Montreal is 78%.

Rainfall

In Montreal, in October, it is raining for 15.3 days, with typically 84mm (3.31") of accumulated precipitation. Throughout the year, in Montreal, there are 154.5 rainfall days, and 864mm (34.02") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Montreal, Canada. October is the first month it typically snows in Montreal. Throughout October, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, in Montreal, there are 74.1 snowfall days, and 1120mm (44.09") of snow is accumulated.

Daylight

In Montreal, the average length of the day in October is 10h and 56min.
On the first day of October, sunrise is at 6:53 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:42 pm EDT.

Sunshine

In October, the average sunshine in Montreal, Canada, is 5.1h.

UV index

The average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in October interprets into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What are October temperatures in Montreal?

In Montreal, in October, the average high-temperature is 12.8°C (55°F), and the average low-temperature is 6.1°C (43°F).

What is the average humidity in October in Montreal?

In Montreal, Canada, the average relative humidity in October is 78%.

How much does it rain in Montreal in October?

In October, in Montreal, Canada, the rain falls for 15.3 days. Throughout October, 84mm (3.31") of precipitation is accumulated.

When does it start snowing in Montreal?

October is the first month it typically snows in Montreal, Canada. Throughout October, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow.

How many hours of daylight does Montreal have in October?

The average day length in October in Montreal, Canada, is 10h and 56min.

When is the sunrise / sunset in October in Montreal?

In October, on the first day of the month, sunrise is at 6:53 am and sunset at 6:34 pm. On the last day of the month, in Montreal, sunrise is at 7:33 am and sunset at 5:42 pm EDT.

How long on average sun shines in October in Montreal?

In October, the average sunshine duration in Montreal, Canada, is 5.1h.

What is the UV index intensity in October in Montreal?

In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Montreal, Canada

Average temperature in October - Montreal, Canada
  • Average high temperature in October: 12.8°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-5.8°C).

  • Average low temperature in October: 6.1°C

The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).

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Average pressure in October
Montreal, Canada

Average pressure in October - Montreal, Canada
  • Average pressure in October: 1015.6mbar

The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).

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Average wind speed in October
Montreal, Canada

Average wind speed in October - Montreal, Canada
  • Average wind speed in October: 12.9km/h

The windiest month (with the highest average wind speed) is April (14.3km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).

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Average humidity in October
Montreal, Canada

Average humidity in October - Montreal, Canada
  • Average humidity in October: 78%

The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (73%).

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Average rainfall in October
Montreal, Canada

Average rainfall in October - Montreal, Canada
  • Average rainfall in October: 84mm

The wettest month (with the highest rainfall) is May (85mm).
The driest month (with the least rainfall) is September (55mm).

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Average rainfall days in October
Montreal, Canada

Average rainfall days in October - Montreal, Canada
  • Average rainfall days in October: 15.3 days

The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (5 days).

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Average snowfall in October
Montreal, Canada

Average snowfall in October - Montreal, Canada
  • Average snowfall in October: 3mm

The month with the highest snowfall is January (293mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in October
Montreal, Canada

Average snowfall days in October - Montreal, Canada
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Montreal, Canada

Average daylight in October / Average sunshine in October - Montreal, Canada
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in October: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).

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Average sunshine days in October
Montreal, Canada

Average sunshine days in October - Montreal, Canada
  • Average sunshine days in October: 14 days

The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is February (8.9 days).

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Average UV index in October
Montreal, Canada

Average UV index in October - Montreal, Canada
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in October
Montreal, Canada

Average cloud cover in October - Montreal, Canada
  • Average cloud cover in October: 50

The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in October
Montreal, Canada

Average visibility in October - Montreal, Canada
  • Average visibility in October: 9km

The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and February (7km).

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Montreal, Canada

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