Thornhill Weather in December

December in Thornhill brings low temperatures, with highs of 7°C (45°F) and nights dropping to 1°C (34°F). It's the rainiest month of the year, so come prepared with waterproof gear.

Rainfall in Thornhill in December

Expect frequent showers this month, so make sure to have an umbrella to keep yourself dry. Records from the past 30 years suggest around 20 days of rain, with 134 mm (5.3 in) average for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Thornhill in December

Thornhill in December gets highs of 7°C (45°F) during the day and drops to 1°C (34°F) at night. The winter season takes place during December. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights drop to 1°C (34°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Thornhill in December

The month has fewer sunny days, with around 39 hours of sunshine.

December in Thornhill has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.