A two day heat event begins Friday. What: Daytime highs of 29 to 31 degrees Celsius. Overnight lows near 18 degrees Celsius. When: Friday into Saturday evening. Additional information: There is some uncertainty as to how showers or thunderstorms on Saturday will affect the daytime maximums. It is possible that they could inhibit temperatures from reaching their forecasted maximums. ### For more information: https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/how-protect-yourself.html https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/who-is-at-risk.html Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.