Ontario Weather in October
Ontario in October sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 3°C (37°F). Low rainfall is typical, with around 19 mm (0.7 in) for the month.
Rainfall in Ontario in October
You can typically expect 7 days of rain this month, averaging around 19 mm (0.7 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Ontario in October
If you're visiting Ontario in October, expect perfect temperatures with highs of 19°C (66°F) and overnight lows of 3°C (37°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.If your ideal day consists of dry skies and pleasant temperatures, April, May, June, September and October typically offer the best circumstances for Ontario.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ontario's climate page.
Ontario Temperature in October
Min Temperature
3°C (37°F)
Max Temperature
19°C (66°F)
Chance of Rain
23%
Precipitation
19 mm (0.7 in)
Rainy days
7 days
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
perfect weather
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tolerable
unpleasant
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What to Wear in Ontario in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home.What To Do in Ontario in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ontario's climate page.
See the full Ontario climate overview or explore weather in the United States of America.
