I looked at daily snowfall records from, and Toronto’s first 5-centimetre-or-greater snowfall typically arrives around November 18. The timing shifts widely from year to year: as late as November 28 in 2021 and as early as November 11 in 2019.
This year stands out: on November 9 2025, Toronto recorded about 10 cm of snow, marking the city’s earliest major November snowfall since the 1900s.
The dataset actually goes back all the way to 1937, but at that scale it was difficult to see everything in one view. You can see the full visualization here, which shows that the last 10cm snowfall this early was back on November 2nd, 1966: https://datawrapper.dwcdn.net/Wi9nU/3/
Data from the Canadian Centre for Climate Services, visualized in Datawrapper, cleaned up and annotated by me in Figma.
by Ube_Solo
3 Comments
I looked at daily snowfall records from, and Toronto’s first 5-centimetre-or-greater snowfall typically arrives around November 18. The timing shifts widely from year to year: as late as November 28 in 2021 and as early as November 11 in 2019.
This year stands out: on November 9 2025, Toronto recorded about 10 cm of snow, marking the city’s earliest major November snowfall since the 1900s.
The dataset actually goes back all the way to 1937, but at that scale it was difficult to see everything in one view. You can see the full visualization here, which shows that the last 10cm snowfall this early was back on November 2nd, 1966: [https://datawrapper.dwcdn.net/Wi9nU/3/](https://datawrapper.dwcdn.net/Wi9nU/3/)
Data from the [Canadian Centre for Climate Services](https://climate-change.canada.ca/climate-data/#/daily-climate-data), visualized in Datawrapper, cleaned up and annotated [by me](https://www.nickabasolo.com/snowfall-toronto) in Figma.
If you make a color scale like that, I think it makes sense to give 0 a complete different color, and then have a gradient for everything above 0.
“Earliest” is definitely a click bait title.
I assumed that meant “since records have been kept,” but really it meant “since the year 2000.”
I’ve been alive longer than that…