December weather forecastBlue River, CO
December
Weather in December
December, the first month of the winter in Blue River, is still a freezing cold month, with an average temperature fluctuating between 0.7°F (-17.4°C) and 21.2°F (-6°C).Temperature
With average high temperatures of 21.2°F (-6°C) and lows of 0.7°F (-17.4°C), December is the coldest month.Humidity
In December, the average relative humidity is 85%.Rainfall
In Blue River, during December, the rain falls for 4.5 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 110.4 rainfall days, and 24.09" (612mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Blue River, in December, during 17.6 snowfall days, 10.83" (275mm) of snow is typically accumulated. Throughout the year, there are 158 snowfall days, and 118.82" (3018mm) 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 the month, sunrise is at 7:05 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:50 pm MST.
Sunshine
In December, the average sunshine in Blue River is 5.5h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Blue River, CO
- Average high temperature in December: 21.2°F
The warmest month (with the highest average high temperature) is July (65.8°F).
The month with the lowest average high temperature is December (21.2°F).
- Average low temperature in December: 0.7°F
The month with the highest average low temperature is July (40.1°F).
The coldest months (with the lowest average low temperature) are January and December (0.7°F).
Average pressure in December
Blue River, CO
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in December
Blue River, CO
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Blue River, CO
- Average humidity in December: 85%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (54%).
Average rainfall in December
Blue River, CO
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is July (3.35").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in December
Blue River, CO
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (2.8 days).
Average snowfall in December
Blue River, CO
- Average snowfall in December: 10.83"
The month with the highest snowfall is May (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in December
Blue River, CO
- Average snowfall days in December: 17.6 days
The month with the highest number of snowfall days is April (22.8 days).
The month with the least snowfall days is July (1.3 days).
Average daylight in December /
Average sunshine in December
Blue River, 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: 5h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Blue River, CO
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in December
Blue River, CO
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Blue River, CO
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility in December
Blue River, CO
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
