As students in Toronto embark on a new school year amidst sunny skies, a shift in weather is on the horizon. After enjoying a warm start to the week with highs of 26°C on Wednesday, cooler temperatures and showers are expected to greet the city towards the end of the first week of September.
The transition will begin on Thursday and Friday, with rain showers forecasted and temperatures dropping to around 20°C during the day and the mid-teens at night. This change signals the onset of more typical early-fall weather in Toronto, as summer gives way to autumn.
September in Toronto is characterized by a transition from the warmth of summer to the crispness of autumn, with average highs reaching 22°C and lows around 15°C. Rain is a common occurrence, with about five to eight rainy days throughout the month.
In recent years, early September has often brought warmer temperatures than usual. In 2021, the average daytime high in Toronto was 22°C, with a nighttime low of 17°C. Looking back at historical data, September 2023 recorded an average high of 23.4°C, while 2022 saw 22.2°C. The warmest September on record dates back to 2002, with an average high of 25.5°C.
Following the rainy days at the end of the week, temperatures are expected to plummet further. Saturday’s high is anticipated to be 18°C with a mix of sun and clouds, while Sunday may see highs near 16°C with a chance of light rain.
To navigate the fluctuating weather, parents and students are advised to dress in layers and carry umbrellas, particularly for morning commutes and afternoon pickups.
Stay updated on the weather by signing up for the CityNews Weather Guarantee and accessing Toronto’s extended forecast.