Monday, September 14, 2026, brings a brisk start to the work week in Montreal as forecasters predict a blend of sun and clouds with temperatures climbing to a modest 19 °C. Winds will pick up, reaching gusts of up to 40 km/h, before easing into a clear night that sees temperatures dip to around 10 °C.
Morning commuters can expect a cool, overcast start, with the early hours dominated by cloud cover that keeps temperatures low. The wind, while noticeable, should remain within the predicted gust range, adding a slight chill to the air. As the day progresses, sunshine will break through the clouds, offering a brighter, though still temperate, afternoon.
By early afternoon, the sun’s influence will raise the mercury to the forecasted high of 19 °C, providing a pleasant, if brief, respite from the morning chill. Despite the increase in temperature, gusty conditions may persist, especially in open areas and near the waterfront, where wind speeds could briefly approach the 40 km/h mark. Residents are advised to keep an eye on any shifting wind patterns, particularly those planning outdoor activities.
Evening conditions will transition to clear skies, allowing heat to radiate away from the city. Temperatures are set to fall steadily through the night, reaching a low of 10 °C as the sun sets. The clear night sky will also signal the arrival of early autumn, a season marked by cooler mornings and milder afternoons. Montrealers can anticipate a typical early‑fall pattern, with the day's weather serving as a reminder that summer is giving way to cooler, crisper days ahead.