December weather forecastFort Collins, CO
December
Weather in December
December is characterized by the return of the cold winter weather in Fort Collins. The average maximum temperature decreases to 36.1°F (2.3°C), while the minimum plunges to a frigid 18.7°F (-7.4°C); this denotes the year's end on a chilly note. The city celebrates the holiday season under snowy skies, creating a picturesque winter wonderland. Despite the cold temperatures, the spirit of holiday festivities keeps the city warm and vibrant.Temperature
The month of December sees the lowest average temperatures, reaching 36.1°F (2.3°C) at the peak and 18.7°F (-7.4°C) at the low.Humidity
In December, the average relative humidity is 65%.Rainfall
In Fort Collins, during December, the rain falls for 1.5 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Fort Collins, during the entire year, the rain falls for 73.4 days and collects up to 7.64" (194mm) of precipitation.Snowfall
Months with snowfall in Fort Collins are January through May, October through December. In December, it is snowing for 3.2 days. Throughout December, 1.3" (33mm) of snow is accumulated. In Fort Collins, during the entire year, snow falls for 21.2 days and aggregates up to 15.98" (406mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:43 pm MST.
Sunshine
In Fort Collins, the average sunshine in December is 6.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Fort Collins. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fort Collins, CO
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in December: 18.7°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure in December
Fort Collins, CO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Fort Collins, CO
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Fort Collins, CO
- Average humidity in December: 65%
The month with the highest relative humidity is February (67%).
The months with the lowest relative humidity are June, August and September (45%).
Average rainfall in December
Fort Collins, CO
- Average rainfall in December: 0.16"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is January (0.12").
Average rainfall days in December
Fort Collins, CO
- Average rainfall days in December: 1.5 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is January (1.2 days).
Average snowfall in December
Fort Collins, CO
- Average snowfall in December: 1.3"
The month with the highest snowfall is April (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fort Collins, CO
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fort Collins, 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 54min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in December
Fort Collins, CO
- Average sunshine days in December: 27.5 days
The months with the most sunshine days are January and December (27.5 days).
The month with the least sunshine days is July (14.9 days).
Average UV index in December
Fort Collins, CO
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Fort Collins, CO
- Average cloud cover in December: 24
The months with the most cloud cover are February, April and May (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in December
Fort Collins, 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).
