Residents in Port Colborne are preparing for a dramatic shift in weather that will bring unseasonably warm temperatures followed by a sharp cold snap between Saturday, April 18 and Monday, April 20, 2026.
According to Environment Canada, Saturday will reach a high of 21°C with showers and a risk of thunderstorms in the afternoon. Southwest winds are expected to gust up to 50 km/h, and residents are encouraged to secure any loose items around their homes.
The mild weather will be short-lived as temperatures drop to 4°C on Sunday with a chance of flurries. By Sunday night, temperatures are expected to reach a low of -4°C. Flurries remain possible into Monday, which will see a high of only 3°C.
With temperatures dropping well below freezing, residents should dress in layers for the remainder of the weekend. Drivers and property owners should also be aware that frost may form on roads and other surfaces.
