Daily Forecast: September 17, 2025

The warm stretch of weather will continue across the region tomorrow, with most areas seeing mainly sunny skies. Eastern Ontario will see a mix of sun and cloud.

Fog is expected to develop overnight tonight into tomorrow morning once again. Slow down and drive with caution in areas of poor visibility. Ensure your full lighting system is turned on.

Looking ahead to Thursday, some showers are expected across the area with temperatures in the mid to upper 20s.

Temperatures in red represent forecasted humidex values.