Burlington residents can expect pleasant daytime temperatures and cooler nights over the coming week, with no weather alerts in effect as of Monday. According to The Weather Network, current conditions at 3:15 PM on September 14, 2026 show partly cloudy skies and a temperature of 21°C, with a high of 21°C and a low of 15°C. Environment Canada has confirmed no alerts for the Burlington-Oakville region.
The seven-day forecast indicates daytime highs will stay between 22°C and 23°C, while overnight lows will range from 15°C to 20°C. This creates temperature swings of about 5 to 7 degrees between day and night, making for comfortable afternoons and cooler evenings. Clear to partly cloudy skies are expected Monday and Wednesday evenings, offering good conditions for stargazing or evening walks.
Lake Ontario’s water temperature near Burlington is currently 20.2°C, above the September average of 19.6°C. The swimming season typically extends through September, and the lake remains a draw for residents and visitors looking to enjoy late-summer water activities.
The extended pleasant weather is linked to an exceptionally strong El Niño event, which is projected to become the strongest on record. The Weather Network’s fall forecast notes that Ontario may see above-seasonal temperatures overall this autumn, though mid-September through mid-October could run close to seasonal. Below-normal precipitation is also expected for much of the province, meaning fewer classic fall storms.
With no alerts and steady conditions ahead, Burlington residents can plan for a week of mild, sunny days and crisp, clear nights, a gentle start to the fall season.
