A humid and stormy season ahead for Montreal
Montreal, Friday, May 30, 2025, local time in Ottawa — After a hesitant spring, marked by unstable temperatures and unusually grey skies, the city of Montreal is bracing for an exceptionally wet and muggy summer, as reported by The Weather Network. The upcoming season is shaping up to be one of the most unstable in recent decades, with forecasts calling for heat waves, post-tropical cyclones, and above-average precipitation.
Nighttime heat, lingering humidity, and violent storms
A central North American heat dome will drive temperatures upward, especially at night. This phenomenon will result in high humidity levels and intense thunderstorms, often accompanied by strong winds, hail, and the potential for tornadoes.
Conditions may worsen with the arrival of remnants of one or two tropical systems, likely to impact southern and eastern Quebec, bringing heavy rainfall and enhancing storm activity across the province.
Above-normal rainfall and smoky skies
The Greater Montreal Area can expect frequent stormy showers throughout summer 2025. Evenings will be warmer than usual, and sudden downpours could catch even seasoned locals off guard. The risk of strong to severe storms will be heightened, particularly in regions exposed to southeasterly winds.
Another concern will be air quality, which may deteriorate due to smoke from distant wildfires. Clear skies might often give way to hazy, smoky afternoons, especially when atmospheric movement is minimal.
Average temperatures and expected highs for July
In July, Montreal typically averages around 21°C (69.8°F). Daytime highs often surpass 26°C (78.8°F), while nighttime temperatures hover around 16°C (60.8°F). However, the persistent humidity will make evenings feel significantly warmer than usual.
While the oppressive heat might seem relentless, occasional cold fronts are expected to bring brief cooler spells, adding even more contrast to an already volatile season.
Keep your umbrella close, stay informed, and embrace Montreal’s ever-changing skies.
