Daytime highs, nighttime lows and the warmest cities in Ontario, Canada this October.
Ontario, Canada, a region in Canada, experiences maximum daytime temperatures in October ranging from 8°C (46°F) in Red Lake to 16°C (61°F) in Chatham. Nighttime temperatures generally drop to 8°C (46°F) in Chatham and 1°C (34°F) in Red Lake.
Discover the typical October temperatures for the most popular locations of Ontario on the map below. Detailed insights are just a click away.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Ontario.
Marker color shows the average daytime high temperature in October: blue is cold, red is hot.
Average daytime highs in Ontario, Canada during October reach about 16°C (61°F) in Toronto.
After dark, Toronto cools to about 8°C (46°F) on an average October night.
Based on our systematic data collection, Chatham has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 16°C (61°F), while at night it goes down to an approximate temperature of 8°C (46°F).
When looking through our records, we find that Red Lake stands out as the coolest city in Ontario, Canada for the month of October. Daytime highs average 8°C (46°F) and it cools down to about 1°C (34°F) at night.
Most areas experience a moderate amount of sunshine, with approximately 160 hours of sunlight expected in Toronto. This makes it neither too gloomy nor overly bright.
We have much more information about the climate in Ontario.
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