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Thornhill Weather in December

Thinking of visiting Thornhill in December? Expect low temperatures reaching 3°C (37°F) during the day, dropping to -4°C (25°F) at night, and note that quite a bit of snow/rainfall is likely.

Rainfall in Thornhill in December

This month experiences about 13 days of snow/rain according to historical data, averaging 72 mm (2.8 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Thornhill in December

In December, expect low temperatures in Thornhill, with highs of 3°C (37°F) and lows of -4°C (25°F) at night. The month of December belongs to the winter season. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. Nights drop below freezing to -4°C (25°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. This month is known for its biting cold, so make sure to dress warmly. Proper preparation can help you stay cozy.

Sunshine in Thornhill in December

The area sees fewer sunny days, with a projection of about 78 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.

December in Thornhill can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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For a detailed overview over the year and the best time to visit Canada, check out our Thornhill's climate page.

Thornhill Temperature in December

Min TemperatureMin Temperature -4°C (25°F)  
Max TemperatureMax Temperature 3°C (37°F)  
Chance of RainChance of Rain 44%  
PrecipitationPrecipitation 72 mm (2.8 in)  
Rainy daysRainy days 13 days  
HumidityHumidity 82% *  
SunshineSunshine 78 hours *  
Percentage SunshinePercentage Sunshine 28% *  
* Data from: Toronto, Canada (16 KM, 10 Miles).

Best Places in Canada in December

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

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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 (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 December

Dress warmly and in layers for your trip to Thornhill in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Thornhill in December

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

Swimming
4/10
Cycling
3/10
Walking
3/10
Camping
1/10
Outdoor sports
3/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Canada, check out our Thornhill's climate page.

More climate data for Thornhill