Montreal Weather Records🌤

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With a forecast high of 26°C, tomorrow could be #Montréal's hottest Sep 28th since 1959. #YulWx

Today is #Montréal's 27th consecutive September day with maximum temperature ≥17°C which puts this run in 5th place for the longest run on record. #YulWx #YUL #QCWx

🥉Today is #Montréal's 118th consecutive day with maximum temperature ≥17°C which puts this run in 3rd place for the longest run on record. #YulWx #YUL #QCWx

Streak over. After 15 consecutive September days with <1mm of precipitation in #Montréal, there was 1.2 mm of precipitation Monday. We made it to 7th place, only 7 days behind the record. #YulWx

🥈Yesterday was #Montréal's 13th consecutive September day with no precip which puts this run in 2nd place for the longest run on record. #YulWx #YUL #QCWx

Yesterday was #Montréal's 12th consecutive September day with no precip which puts this run in 4th place for the longest run on record. #YulWx #YUL #QCWx

🥉For only the 3rd time in recorded history, #Montréal recorded a mean humidity below 63.6% during a meteorological summer (meteorological summer 2025). #YulWx

🥇For the 1st time in recorded history, #Montréal recorded a mean humidity below 62.3% during an August (August 2025). #YulWx #YUL #QCWx

#Montréal just had its driest August since records began. Mean Humidity was just 62.2%. #YulWx #YUL #QCWx

For only the 9th time in recorded history, #Montréal's mean temperature was above 21.5°C during a meteorological summer (meteorological summer 2025). #YulWx

Today between 5pm➜6pm, the temp dropped from 27.4°C➜18.6°C which was #Montréal's largest 1h drop in more than 12 years (2013-07-19) #YulWx #YUL #QCWx

August summary: #Montréal broke (or almost broke) 18 records during August. #YulWx

Historically, today is #Montréal's last day of the year with a median high temperature ≥ 25°C. #YulWx

During August 2025, #Montréal had 18 above median days and 13 below median days (by maximum temperature). #YulWx

#Montréal's weather extremes for meteorological summer 2025: #YulWx

#Montréal's weather extremes for August 2025: #YulWx

Streak over. After 77 consecutive days with maximum temperature ≥20°C in #Montréal, the maximum temperature was only 17.9°C yesterday. We made it to 8th place, only 20 days behind the record. #YulWx #YUL #QCWx

With a forecast high of 17°C, tomorrow could be #Montréal's coldest Aug 29th since 1965. #YulWx

Streak over. After 52 consecutive days with maximum temperature ≥22°C in #Montréal, the maximum temperature was only 20.7°C yesterday. We made it to 4th place, only 17 days behind the record. #YulWx #YUL #QCWx