October in Montreal typically marks a transition into autumn. Average temperatures decrease significantly from September, generally ranging between a high of 11C (52F) and a low of 4C (39F). Rainfall is common throughout the month, averaging around 75mm. The first frost often occurs during this period, signaling the end of the growing season and the beginning of the city’s vibrant fall foliage displays.
Understanding typical climatic conditions for this period is crucial for anyone planning to visit or reside in Montreal during that time. This knowledge facilitates informed decisions regarding appropriate clothing, potential outdoor activities, and necessary travel preparations. Historically, October in Montreal has presented variable weather patterns, from sunny, crisp days to periods of extended rain and occasional early snowfalls. Being aware of this variability allows for greater flexibility and preparedness.