| Tonight | Partly cloudy. Fog patches developing after midnight. Low 12. |
| Sunday | Cloudy. Becoming a mix of sun and cloud in the morning. Fog patches dissipating in the morning. High 24 except 19 near Lake Ontario. Humidex 29. UV index 8 or very high. |
| Sunday night | Partly cloudy. Clearing near midnight. Fog patches developing after midnight. Low 13. |
| Monday | Sunny. High 29. |
| Monday night | Clear. Low 17. |
| Tuesday | A mix of sun and cloud with 30 percent chance of showers. High 27. |
| Tuesday night | Cloudy with 40 percent chance of showers. Low 18. |
| Wednesday | A mix of sun and cloud with 40 percent chance of showers. High 28. |
| Wednesday night | Cloudy with 60 percent chance of showers. Low 14. |
| Thursday | Cloudy. High 19. |
| Thursday night | Cloudy. Low 9. |
| Friday | A mix of sun and cloud. High 17. |
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