Thornton Weather in December

Thornton in December sees low daytime temperatures of 7°C (45°F) and nighttime lows of -8°C (18°F). Low snow/rainfall is typical, with around 25 mm (1 in) for the month.

Rainfall in Thornton in December

Looking at the last 30 years, the data shows about 6 days with snow/rain, averaging 25 mm (1 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.

Temperature in Thornton in December

Temperatures in Thornton in December top out at 7°C (45°F) and drop to -8°C (18°F) overnight. During December, the winter season is in full swing. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights drop below freezing to -8°C (18°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. It's often the coldest month of the year, a perfect time to cozy up indoors. Make sure to bring along suitable winter clothing.

Sunshine in Thornton in December

Expect a lot of sunshine this month, with about 195 hours of sun. These sunny conditions help offset the cool temperatures, making it a pleasant month to explore outdoors.

Wind Speed in Thornton in December

Wind speeds average 4 m/s (8 knots) during December. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

December in Thornton 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.