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.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Thornton's climate page.

Thornton Temperature in December

Min Temperature -8°C (18°F)  

Max Temperature 7°C (45°F)  

Chance of Rain 20%  

Precipitation 25 mm (1 in)  

Rainy days 6 days  

Humidity 56% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 195 hours *  

Percentage Sunshine 67% *  

* Data from: Denver, the United States of America (15 KM, 9 Miles).

What to Wear in Thornton in December

Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Pack a light rain jacket or compact umbrella for occasional showers. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Thornton in December

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

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

2/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Thornton's climate page.

More climate data for Thornton

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Thornton climate overview or explore weather in the United States of America.