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Ontario weather in September (Oregon, United States of America)

What does the weather outlook for Ontario look like in September? Want to know if this month is ideal for visiting? Our guide provides detailed weather information.

Temperatures

The weather in Ontario during September is typically perfect, with high temperatures and low rainfall. Daytime temperatures are expected to be around 28°C, cooling off to about 9°C at night.

Precipitation

Ontario in September usually receives low rainfall, averaging around 12 mm for the month. This month experiences about 4 days of rain according to historical data.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit. April, May, June, August, September and October generally stand out with the best circumstances. While January and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Ontario climate page with graphs.

 

Ontario, monthly averages in September

Min TemperatureMin Temperature 9°C  
Max TemperatureMax Temperature 28°C  
Chance of RainChance of Rain 13%  
PrecipitationPrecipitation 12 mm  
Rainy daysRainy days 4 days  

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling
8/10
Walking
8/10
Camping
5/10
Outdoor sports
8/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Ontario.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.