Thornhill
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Thornhill Weather in October

October in Thornhill averages 15°C (59°F) during the day and 6°C (43°F) at night. Quite a bit of rainfall is typical this month, with around 83 mm (3.3 in) on average. An umbrella is a good idea.

Rainfall in Thornhill in October

Looking at the last 30 years, the data shows about 11 days with rain, averaging 83 mm (3.3 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Thornhill in October

In October, Thornhill sees moderate temperatures, with highs of 15°C (59°F). Nights drop to around 6°C (43°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights fall to 6°C (43°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Thornhill in October

You can expect a moderate amount of sunlight, with approximately 160 hours. This means a pleasant mix of sun and overcast.

For Thornhill itself, June, July, August and September generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Thornhill Temperature in October

Min Temperature
6°C (43°F)
Max Temperature
15°C (59°F)
Chance of Rain
35%
Precipitation
83 mm (3.3 in)
Rainy days
11 days
Humidity
85% *
Sunshine
160 hours *
Percentage Sunshine
45% *
* Data from: Toronto, Canada (16 KM, 10 Miles).

Thornhill Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Thornhill - and find the best time to visit.

Best Places in Canada in October

Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in October →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Thornhill in October

The weather can swing between comfortable and chilly in October, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Thornhill in October

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

  • Swimming
    5/10
  • Cycling
    6/10
  • Walking
    6/10
  • Camping
    4/10
  • Outdoor sports
    9/10

Thornhill 3-Day Forecast

More climate data for Thornhill

Popular in October

Where to go in October - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.