Thornhill Weather in January

January in Thornhill averages 0°C (32°F) during the day and -9°C (16°F) at night. Quite a bit of snowfall is typical this month, with around 73 mm (2.9 in) on average. An umbrella is a good idea.

Rainfall in Thornhill in January

Historically, the month has about 12 days of snow, averaging 73 mm (2.9 in) in total. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Thornhill in January

Expect highs of 0°C (32°F) in Thornhill in January, with nights dropping to around -9°C (16°F). This month falls in the winter season. Expect a distinctly cold feel throughout the day, not just overnight. At -9°C (16°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. As the coldest month of the year, it's important to pack plenty of warm clothes and winter gear.

Sunshine in Thornhill in January

With limited sunshine this month, there are about 85 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.

January 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.