Thornhill Weather in December

December in Thornhill typically sees daytime highs of 7°C (45°F) and nighttime lows of 1°C (34°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.

Rainfall in Thornhill in December

Typically, about 21 days will experience rainfall, with an average of 139 mm (5.5 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

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. This month falls in the winter season. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights fall to 1°C (34°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 December

The area experiences limited sunny days, amounting to roughly 37 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, July and August typically offer the best weather for Thornhill.