Montréal weather in October
In October, Montréal has an average high of 12 °C54 °F and an average low of 3 °C38 °F, with about 114 mm4.5 in of precipitation. It is the 6th warmest month of the year and the wettest.
How October compares with other months
Compared with September, October is 8 °C14.5 °F cooler on average and wetter by 26 mm1.0 in. Compared with November, October is 7.4 °C13.3 °F warmer on average and wetter by 33 mm1.3 in. Daylight lasts about 10.8 hours around the middle of the month. Average relative humidity is 81% and the average cloud amount 68%.
Is October a good time to visit Montréal?
October is not among the most comfortable months by our comfort score: it is cool (average high 12 °C54 °F), nights are cold (average low 3 °C38 °F) and it is fairly wet (114 mm4.5 in). The most comfortable months in Montréal are June–September.
What to wear in October
For Montréal in October, pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
October in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Montréal | 1254 | 338 | 1144.5 |
| Trois-Rivières | 1254 | 338 | 1054.1 |
| Sherbrooke | 1254 | 338 | 1204.7 |
| Ottawa | 1356 | 439 | 993.9 |
| Québec | 1253 | 439 | 1194.7 |
| Kingston | 1458 | 948 | 1124.4 |
| Albany | 1762 | 643 | 1244.9 |
| Manchester | 1660 | 642 | 1234.9 |
| Syracuse | 1660 | 644 | 1194.7 |
Nearby places that are more than 1 °C1.8 °F warmer in October: Kingston, Albany, Manchester and Syracuse.
Other months in Montréal
- January−7 °C19 °F / −18 °C0 °F
- February−5 °C23 °F / −16 °C3 °F
- March0 °C33 °F / −9 °C15 °F
- April9 °C49 °F / −1 °C31 °F
- May17 °C63 °F / 7 °C44 °F
- June22 °C72 °F / 13 °C55 °F
- July25 °C78 °F / 16 °C60 °F
- August25 °C77 °F / 15 °C59 °F
- September21 °C70 °F / 10 °C50 °F
- October12 °C54 °F / 3 °C38 °F
- November4 °C39 °F / −4 °C26 °F
- December−4 °C26 °F / −12 °C10 °F
Frequently asked questions
How warm is Montréal in October?
In October the average high in Montréal is 12 °C (54 °F) and the average low is 3 °C (38 °F).
Does it rain a lot in Montréal in October?
On average about 114 mm (4.5 in) of precipitation falls in October; it ranks 1st of the 12 months.
Is October the warmest month in Montréal?
No. The warmest month in Montréal is July, with an average high of 25 °C (78 °F). The coldest month is January, with an average low of -18 °C (0 °F).
How long is the day in Montréal in October?
In the middle of October the day in Montréal lasts about 10.8 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Montréal in October?
The average relative humidity in October is about 81%. This is a long-term average for the whole day.
How cloudy is Montréal in October?
On average about 68% of the sky is covered by cloud in October. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 38 m, while Montréal lies at about 216 m. Temperatures on this page were therefore adjusted by −1.2 °C2.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.