Thornhill weather in September (Ontario, Canada)

How is the weather in Thornhill in September? Check out this comprehensive weather guide.

In Thornhill the weather in September is generally perfect, with high temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 23°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 12°C.

Thornhill in September usually receives moderate rainfall, averaging around 79 mm for the month. Typically around 10 days of rainfall is expected.

With around 195 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

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

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

 

Thornhill, monthly averages in September

Min Temperature 12°C  

Max Temperature 23°C  

Chance of Rain 32%  

Precipitation 79 mm  

Rainy days 10 days  

Humidity 87% *  

Sunshine 195 hours *  

Percentage Sunshine 52% *  

* Data from: Toronto, Canada (16 KM, 10 Miles).

Where to go in Canada in September

Find out more about the weather in Canada in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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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?

For visitors traveling to Thornhill, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

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

Our site offers climate and forecast data for every country in the world. Are you going to Canada? On this website you can find 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.