Weather In Montreal

This is a consideration page in the Montreal targeted journey.

Montreal is classified as a warm-summer humid continental climate (Köppen climate classification: Dfb).[85][86] Summers are warm to hot and humid with a daily maximum average of 26 to 27 °C (79 to 81 °F) in July; temperatures in excess of 30 °C (86 °F) are common. Conversely, cold fronts can bring crisp, drier and windy weather in the early and later parts of summer.

Winters in Montreal bring cold, snowy, windy, and at times, icy weather.
Winter brings cold, snowy, windy, and, at times, icy weather, with a daily average ranging from −10.5 to −9 °C (13.1 to 15.8 °F) in January. However, some winter days rise above freezing, allowing for rain on an average of 4 days in January and February each. Usually, snow covering some or all bare ground lasts on average from the first or second week of December until the last week of March.[87] While the air temperature does not fall below −30 °C (−22 °F) every year,[88] the wind chill often makes the temperature feel this low to exposed skin.

Spring and fall are pleasantly mild but prone to drastic temperature changes; spring even more so than fall.[89] Late season heat waves as well as "Indian summers" are possible. Early and late season snow storms can occur in November and March, and more rarely in April. Montreal is generally snow free from late April to late October. However, snow can fall in early to mid-October as well as early to mid-May on rare occasions.

The lowest temperature in Environment Canada's books was −37.8 °C (−36 °F) on January 15, 1957, and the highest temperature was 37.6 °C (99.7 °F) on August 1, 1975, both at Dorval International Airport.[90]

Before modern weather record keeping (which dates back to 1871 for McGill),[91] a minimum temperature almost 5 degrees lower was recorded at 7 a.m. on January 10, 1859, where it registered at −42 °C (−44 °F).[92]