Published on July 16, 2025 at 3:53 p.m.
Do you find it really hot? Well, this is really the case: this Wednesday, July 16, it is suffocating in the large Montreal region, with a Mercury which borders on 35 °! As a bonus, a heat record of almost 30 years could be broken elsewhere in southern Quebec. Explanations.
Once upon a time on July 16, 2025…
Several sectors in southern Quebec could beat daily heat records on July 16. If you are in these regions, it is probably not necessary to specify it, but just in case: that means that it is particularly hot! What records is it about, exactly? Let’s go back a little in time … Obviously, mid-July 2018 was particularly hot, because among the records that could be broken this Wednesday, two of them were established on July 16, 2018. The current forecast for Montreal is 34 °, while the daily record for a July 16 is 33.7 ° (in 2018). On the side of Gatineau, the mercury should climb up to 33 ° today and the record of July 16, 2018 is 33.9 °.
For Sherbrooke, we almost want to say that it was in the pocket: on July 16, 1998, he made 31.4 °, while today’s forecast is 32 °.
No respite at night
If you find that the bottom of the air is heavy and sticky today in southern Quebec, you will have to take your pain in patience … With dew points that remain high, the night from Wednesday to Thursday will be particularly uncomfortable for those who have no air conditioning. “The next 36 hours will be critical since Thursday’s day should be even heavier. The dew dots cap the color scale; We see yellow everywhere in southern Quebec, ”observes Nicolas Lessard, meteorologist.
Felt upwards, then downwards and again upwards
The good news: as of Friday, humidity will be hunted and southern Quebec should be able to reconnect with much more seasonal temperatures. For this marked fall in mercury and the departure of the imposing humidity, you will have to thank the passage of a vigorous cold front and potentially very violent thunderstorms. The stormy episodes scheduled for Thursday, especially in the south of the province will not be a pleasure, but at least they will offer a small respite to this suffocating heat wave started since Tuesday.
Thus, after having culminated in the 40, the feeling of several sectors in southern Quebec will be down on Friday and normally until next Monday. We can already see on the horizon that the mercury should be backwards in the middle of next week, with humidx clues of 35 and more.
But let’s try to go there one day both … or a suffocating day at the same time, rather!
With the collaboration of Nicolas Lessard, meteorologist.
