London, Ontario is set to experience milder temperatures in the coming days before a significant warmup arrives over the weekend. CTV London Meteorologist Julie Atchison provided the latest forecast, indicating a period of rain ahead of the heat surge.
Rain and Mild Conditions Expected
Residents can expect cooler conditions with temperatures remaining below seasonal averages. A weather system moving through the region will bring rain, which could impact outdoor plans. Atchison noted that the rain will be welcome after a dry spell, but it may be heavy at times.
The mild weather is a brief reprieve before a dramatic shift. By the weekend, a high-pressure system is expected to build, pushing temperatures well above normal. Highs could reach the low 30s Celsius, accompanied by humidity.
Weekend Warmup Details
The surge in heat is attributed to a southerly flow drawing warm air from the United States. Overnight lows will also rise, offering little relief. Atchison advised residents to prepare for hot conditions and stay hydrated if spending time outdoors.
The weekend surge is part of a broader pattern affecting southern Ontario, with multiple days of heat possible. No significant cooling is expected until early next week when a cold front may move through.
Forecast Confidence and Precautions
Atchison emphasized that the forecast confidence is high for the weekend warmup, though exact temperatures could vary slightly. She recommended checking local alerts and taking precautions against heat-related illness.
For the latest updates, Londoners can follow CTV London's weather coverage. The mild conditions before the surge offer a chance to prepare for the impending heat.



