Heat warning
A heat warning remains in effect for Chatham-Kent, with daytime highs of 31 to 33 C and humidex values between 39 and 43 expected Thursday, while overnight temperatures will remain near 21 C. Environment Canada says conditions near Lake Erie and Lake Huron may be slightly cooler. Although temperatures are expected to stay in the upper 20s to near 30 C on Friday and Saturday, lower humidity levels should provide some relief. Residents are urged to stay hydrated, limit outdoor activity during the hottest parts of the day, check on vulnerable people, and watch for signs of heat-related illness such as dizziness, nausea, headache and extreme fatigue.
Today – June 11, 2026
A mix of sun and cloud with 70 percent chance of showers this morning and 30 percent chance of showers this afternoon. Risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 late this morning. High 30. Humidex 41. UV index 10 or very high.
Tonight
Partly cloudy. 60 percent chance of showers late this evening and overnight with risk of a thunderstorm. Wind becoming southwest 20 km/h gusting to 40 after midnight. Low 21.
Fri, 12 Jun – Cloudy. Becoming a mix of sun and cloud in the morning. Wind west 20 km/h gusting to 40. High 28. Humidex 31. UV index 9 or very high. Night – Clear. Low 18.
Sat, 13 Jun – Sunny. High 29. Night – Increasing cloudiness. Low 18.
Sun, 14 Jun – Cloudy with 40 percent chance of showers. High 26. Night – Clear. Low 15.
Mon, 15 Jun – A mix of sun and cloud. High 24. Night – Cloudy periods. Low 12.
Tue, 16 Jun – A mix of sun and cloud with 30 percent chance of showers. High 24. Night – Cloudy periods with 30 percent chance of showers. Low 13.
Wed, 17 Jun – A mix of sun and cloud. High 25.
