Toronto's September 12th Forecast: A Perfect Blend of Sun, Cloud, and Mild Breezes
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- September 13, 2025
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As Toronto steps into mid-September, residents can look forward to a lovely blend of weather on Tuesday, September 12th, 2023. Forecasts indicate a day gracefully oscillating between sunshine and cloud cover, creating an ideal backdrop for both indoor and outdoor activities.
The morning will greet the city with a refreshing atmosphere, paving the way for a comfortable high of 21°C.
While the thermometer reads 21°C, the humidex will make it feel more like a balmy 24°C – a perfect invitation to enjoy the last vestiges of summer-like warmth before autumn truly sets in. Whether you're commuting, enjoying a midday stroll, or grabbing lunch outdoors, the conditions are set to be very pleasant.
Don't forget your sunglasses and sun protection, as the UV index is expected to be high at 7.
Even with the mix of clouds, the sun's rays will be strong, so a little extra care is advisable for those spending extended periods outdoors.
As the day transitions into evening, the skies will continue their dance of sun and cloud, with temperatures gracefully descending to a mild low of 14°C overnight.
This comfortable evening temperature is perfect for opening windows and enjoying the crisp night air, or perhaps for a cozy evening indoors.
For those interested in the celestial timings, the sun will rise bright and early at 6:49 AM, painting the sky with morning hues, and will bid farewell with a scenic sunset at 7:27 PM.
Looking back at the archives, the historical average for September 12th in Toronto sits at a maximum of 21.6°C and a minimum of 12.2°C.
This year's forecast aligns closely with these long-term trends. Toronto's record high for this date was a sizzling 30.6°C, set way back in 1919, while the chilliest September 12th saw temperatures drop to a cool 5°C in 1987.
And what about the days ahead? The outlook for the remainder of the week is equally inviting.
Toronto can anticipate predominantly sunny skies with daytime highs soaring to a delightful 25°C for the next few days. It seems September is treating the city to some truly glorious weather!
.Disclaimer: This article was generated in part using artificial intelligence and may contain errors or omissions. The content is provided for informational purposes only and does not constitute professional advice. We makes no representations or warranties regarding its accuracy, completeness, or reliability. Readers are advised to verify the information independently before relying on