December weather forecastSterling, CO
December
Weather in December
Sterling, Colorado retreats into the heart of winter in December. The city wears a white blanket with an average snowfall of 1.38" (35mm) distributed over 6.4 days. Despite the chill, the sunshine manages to peek through with an average duration of 6.5 hours per day. The weather exhibits a typical cold winter ambiance with high humidity and significantly lower temperatures than November. The frosty climatic conditions encapsulate the city's charm, making Sterling a delightful winter wonderland.Temperature
December, known for its average high temperature of 37.8°F (3.2°C) and an average low temperature of 23°F (-5°C), is the coldest month.Humidity
In December, the average relative humidity is 64%.Rainfall
In Sterling, in December, during 4.6 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. In Sterling, during the entire year, the rain falls for 123.2 days and collects up to 15.39" (391mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 6.4 days. Throughout December, 1.38" (35mm) of snow is accumulated. Throughout the year, there are 34.4 snowfall days, and 12.13" (308mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:57 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:35 pm MST.
Sunshine
The average sunshine in December is 6.5h.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 of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Enhance your sun protection with tightly woven, yet airy clothing. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sterling, CO
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in December
Sterling, CO
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Sterling, CO
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).
Average humidity in December
Sterling, CO
- Average humidity in December: 64%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is September (47%).
Average rainfall in December
Sterling, CO
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in December
Sterling, CO
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in December
Sterling, CO
- Average snowfall in December: 1.38"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sterling, CO
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Sterling, CO
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 30min
The months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in December
Sterling, CO
- Average sunshine days in December: 21.9 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Sterling, 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
Sterling, CO
- Average cloud cover in December: 29
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Sterling, 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).
