Residents in St. Thomas, Ontario, are enjoying a stretch of unseasonably warm weather this week as temperatures climb well above the typical April average.
According to The Weather Network, the high temperature for Thursday, April 23, 2026, is forecast to reach 19°C. This is roughly 7°C warmer than the historical average high of 11.3°C for late April, as recorded by Climate-Data.org.
Current conditions in the city feature a low UV index, 85% humidity, and light winds from the north at 5 km/h. These mild conditions provide a comfortable window for outdoor activities before the weather pattern shifts later this week.
The warm spell is expected to be temporary, as rain is likely to return to the region by the weekend. The forecast indicates a 70% chance of showers by Friday evening, followed by a high probability of light rain throughout the day on Saturday.
Meteorologists note that this warm stretch aligns with a broader transition in climate patterns. As Ontario moves out of the winter period, atmospheric shifts are contributing to warmer, drier trends across parts of North America, even during periods where spring weather can otherwise remain unpredictable.
