Much of Canada can expect a continuation of hot and humid conditions on Monday, July 27, 2026, with a significant risk of thunderstorms developing in several areas. Environment Canada has issued weather advisories highlighting the potential for localized heavy rainfall due to slow-moving storms, particularly in regions experiencing near-calm winds.
Across Ontario and Quebec, the day is forecast to be hot and humid, with temperatures in the low to mid-80s Fahrenheit (high 20s Celsius). There is a 40 to 60 percent chance of showers and thunderstorms developing in the afternoon, with humidex values making it feel considerably warmer. Toronto, for example, is expected to reach a high of 29°C with a humidex of 36, while Montreal anticipates a high of 29°C with a humidex of 35. Thunder Bay is also set for a warm day with a high of 24°C, feeling like 29 with the humidex, though the morning began with fog and reduced visibility.
Residents in the Prairies may also experience scattered thunderstorms, with a risk of dry lightning in some areas. Meanwhile, British Columbia is anticipating cooler, more seasonal temperatures, a contrast to the heat experienced earlier in July. Smoke from western Canadian wildfires could filter into some areas late in the day, potentially impacting air quality.
As summer progresses, Canadians are reminded that July often brings fluctuating weather patterns. While heat is a common feature, the variability of precipitation and the increased potential for storm activity require ongoing attention to weather forecasts and safety advisories.
