December weather forecastGreenhorn, CO
December
Weather in December
December, the first month of the winter in Greenhorn, is also an icy month, with an average temperature varying between 23°F (-5°C) and 41.5°F (5.3°C).Temperature
December is the coldest month, with the temperature often reaching an average high of 41.5°F (5.3°C) and an average low of 23°F (-5°C).Humidity
In December, the average relative humidity in Greenhorn is 59%.Rainfall
In December, the rain falls for 4.4 days. Throughout December, 0.47" (12mm) of precipitation is accumulated. Throughout the year, there are 120.5 rainfall days, and 14.92" (379mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Greenhorn, in December, snow falls for 6.5 days, with typically accumulated 3.03" (77mm) of snow. In Greenhorn, during the entire year, snow falls for 33.9 days and aggregates up to 23.27" (591mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:57 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:50 pm MST.
Sunshine
In Greenhorn, 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 reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenhorn, CO
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in December
Greenhorn, CO
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in December
Greenhorn, CO
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Greenhorn, CO
- Average humidity in December: 59%
The month with the highest relative humidity is February (62%).
The month with the lowest relative humidity is June (38%).
Average rainfall in December
Greenhorn, CO
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days in December
Greenhorn, CO
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is November (3.9 days).
Average snowfall in December
Greenhorn, CO
- Average snowfall in December: 3.03"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greenhorn, CO
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenhorn, CO
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 7h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in December
Greenhorn, CO
- Average sunshine days in December: 23 days
The month with the most sunshine days is November (23.8 days).
The month with the least sunshine days is July (5.1 days).
Average UV index in December
Greenhorn, 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
Greenhorn, CO
- Average cloud cover in December: 20
The months with the most cloud cover are February and April (Cloud cover 23).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in December
Greenhorn, 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).
