December weather forecastIliff, CO
December
Weather in December
December, the first month of the winter in Iliff, is also an icy month, with an average temperature varying between 37.8°F (3.2°C) and 23°F (-5°C).Temperature
The coldest period tends to be December, when average temperatures fluctuate between a high of 37.8°F (3.2°C) and a low of 23°F (-5°C).Humidity
In December, the average relative humidity in Iliff is 64%.Rainfall
In Iliff, Colorado, in December, it is raining for 4.6 days, with typically 0.39" (10mm) of accumulated precipitation. Throughout the year, in Iliff, Colorado, there are 123.2 rainfall days, and 15.39" (391mm) of precipitation is accumulated.Snowfall
Months with snowfall in Iliff are January through May, October through December. In Iliff, in December, snow falls for 6.4 days, with typically accumulated 1.38" (35mm) of snow. Throughout the year, in Iliff, there are 34.4 snowfall days, and 12.13" (308mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:25 pm. On the last day of December, in Iliff, sunrise is at 7:16 am and sunset at 4:34 pm MST.
Sunshine
In December, the average sunshine is 6.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Iliff. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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
Iliff, 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).
