December weather forecastLone Tree, CO
December
Weather in December
In December, Lone Tree, Colorado, experiences its traditional winter weather. Temperatures are at their lowest for the year, and regular snowfall continues, creating a picturesque white cityscape. December ends the year with 3.39in of snow, mimicking the weather patterns observed in early January. This month culminates the calendar with a familiar blend of cold temperatures, increased humidity, and a high pressure average. Despite the chill, the snow-coated city and festive spirit foster a joyful end to the year.Temperature
Lone Tree witnesses the coldest weather in December, with temperatures averaging a high of 40.3°F (4.6°C) and a low of 20.7°F (-6.3°C).Humidity
In December, the average relative humidity is 61%.Rainfall
In Lone Tree, in December, during 4.4 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Lone Tree, during the entire year, the rain falls for 94.2 days and collects up to 11.97" (304mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Lone Tree, in December, during 7.6 snowfall days, 3.39" (86mm) of snow is typically accumulated. Throughout the year, there are 46.5 snowfall days, and 37.2" (945mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:45 pm MST.
Sunshine
In Lone Tree, the average sunshine in December is 7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lone Tree, CO
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (40.3°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in December
Lone Tree, CO
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in December
Lone Tree, CO
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest months (with the lowest average wind speed) are August and December (6.5mph).
Average humidity in December
Lone Tree, CO
- Average humidity in December: 61%
The month with the highest relative humidity is February (65%).
The months with the lowest relative humidity are June, August and September (43%).
Average rainfall in December
Lone Tree, CO
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in December
Lone Tree, CO
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is November (3.4 days).
Average snowfall in December
Lone Tree, CO
- Average snowfall in December: 3.39"
The month with the highest snowfall is April (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lone Tree, CO
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Lone Tree, CO
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in December
Lone Tree, CO
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is April (12.7 days).
Average UV index in December
Lone Tree, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Lone Tree, CO
- Average cloud cover in December: 22
The month with the most cloud cover is April (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 15).
Average visibility in December
Lone Tree, CO
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
