Ontario weather in October
Thinking about venturing to Ontario this October and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:
What is the weather like in Ontario in October?
Ontario is a region in Canada. October in Ontario generally has temperatures that range from cold to moderate, with precipitation levels ranging from moderate to high.
During the day the temperature is cold in Red Lake at 8°C and moderate in Chatham at 16°C. As night falls, temperatures generally drop to 8°C in Chatham and 1°C in Red Lake.
In October, precipitation varies across different areas. From moderate rainfall in Fort Frances with an average of 58 mm to high rainfall in Rockport with 133 mm. Most cities enjoy a balanced amount of sunshine, with around 160 hours of sunlight anticipated in Toronto. This ensures the days are neither too dim nor excessively sunny.
For a closer look at October's conditions in Ontario, see the map below. For a more detailed look at Ontario's yearly weather, check out our Ontario climate page.
Where to go in Ontario in October
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Popular destinations in Ontario
What is the weather like in October for the 5 most popular destinations in Ontario?
Average weather in Toronto
In October Toronto generally has moderate temperatures with maximum daytime temperatures around 16°C, minimum nighttime temperatures around 8°C and moderate monthly rainfall. So on average the conditions are tolerable that month.
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Average weather in Ottawa
In October Ottawa generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 4°C and high monthly rainfall. So on average the conditions are unpleasant that month.
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Average weather in Niagara Falls
In October Niagara Falls generally has moderate temperatures with maximum daytime temperatures around 15°C, minimum nighttime temperatures around 7°C and high monthly rainfall. So on average the conditions are unpleasant that month.
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Average weather in Mississauga
In October Mississauga generally has moderate temperatures with maximum daytime temperatures around 15°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are tolerable that month.
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Average weather in Niagara on the Lake
In October Niagara on the Lake generally has low temperatures with maximum daytime temperatures around 12°C, minimum nighttime temperatures around 5°C and moderate monthly rainfall. So on average the conditions are unpleasant that month.
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Is your destination not in the list? Have a look at other destinations in Ontario, in Canada.
Is October the best time to visit Ontario?
In our opinion, October is a good time to visit Ontario with overall tolerable weather in Toronto. However, the weather conditions may vary depending on your destination.
On average, the best time to visit Ontario is in June, July, August and September with generally perfect weather in Toronto. In contrast, January, February, March, April, November and December tend to have poor weather conditions.
Interested in more climate information?
We have much more information about the climate in Ontario.
Interested in the weather conditions in a specific month? Select the month below.
Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.