Montreal, QC – It’s time to break out the umbrellas as Montreal gears up for a soggy Sunday and an even wetter start to the week. Today’s forecast includes a high of 26°C, with clouds dominating the sky and a 60% chance of afternoon showers. Expect the humidity to make it feel like a balmy 34°C, so you might want to rethink that light jacket! Southeast winds at 20 km/h will add a touch of breeze to the otherwise humid day. As evening approaches, the rain will intensify, with 30 to 40 mm of rainfall expected, potentially accompanied by thunderstorms. Tonight’s low will settle at a warm 20°C.
Monday, August 19th will continue the wet trend, with more showers and the risk of thunderstorms throughout the day. Winds will shift to the north, picking up to 20 km/h with gusts up to 40 km/h by noon. Despite the cooler high of 23°C, the humidex will still make it feel like 31°C, so dress accordingly. Monday night will see the temperature drop significantly to 12°C, with persistent showers.
Looking ahead, Tuesday and Wednesday aren’t offering much relief. Both days are expected to be cloudy with temperatures struggling to reach the mid-teens. Tuesday’s high will be a cool 16°C, while Wednesday won’t fare much better with a high of 15°C, both days accompanied by continued rain showers.
For those longing for a bit of sun, Thursday promises a break in the clouds with highs reaching 20°C. By Friday and Saturday, we can finally expect a mix of sun and clouds with temperatures bouncing back to more seasonal highs of 25°C and 26°C respectively.
Historical note: On this date, Montreal’s record high was 31.8°C in 2002, while the chilliest August 18th recorded a low of 6.1°C back in 1968. The heaviest rainfall for this day was a hefty 46.7 mm in 1969—a figure we might just rival today!
Wardrobe Tip: Today’s weather calls for a raincoat and waterproof shoes. Keep that umbrella handy, but be ready to ditch layers as the humidity makes it feel much warmer.
Weather Trivia: Did you know? Montreal once endured 46.7 mm of rain on August 18th, 1969—the same amount we might be expecting tonight!
