Residents of Tillsonburg, Ontario, can expect a warm and sunny start to the week before a shift toward cooler, wet weather arrives tonight.
According to Environment Canada, Monday, April 27, 2026, will reach a high of 19°C under mainly sunny skies. While the weather is pleasant, officials advise residents to take precautions as the ultraviolet index is forecast to reach 7, which is considered high. To stay safe while outdoors, the government recommends wearing a hat to cover the face and ears, choosing tight-woven clothing, and applying a broad-spectrum sunscreen with an SPF of 30 or higher.
The weather is expected to change overnight as clouds increase and showers arrive before Tuesday morning, accompanied by a risk of thunderstorms. This unsettled pattern will continue through Tuesday, April 28, bringing 10 to 15 mm of rain and winds gusting up to 60 km/h.
Following Tuesday’s rain, the region will see a noticeable cooling trend throughout the week. Temperatures will steadily drop from the initial highs of 19°C toward a daytime high of 8°C by Saturday, May 2. While there are currently no weather alerts in effect for the area, residents should stay prepared for changing conditions.
