Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The month of December sees the lowest average temperatures, reaching 44.4°F (6.9°C) at the peak and 26.1°F (-3.3°C) at the low.Humidity
In Holly, the average relative humidity in December is 59%.Rainfall
In Holly, during December, the rain falls for 2.8 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, in Holly, there are 87.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.Snowfall
Months with snowfall in Holly are January through May, October through December. December is the month with the most snowfall. Snow falls for 4.3 days and accumulates 1.42" (36mm) 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 December, sunrise is at 6:46 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 4:39 pm MST.
Sunshine
In December, the average sunshine in Holly is 6.7h.UV index
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Holly. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Holly?
How cold is it in Holly in December?
What is the average humidity in December in Holly?
How much does it rain in Holly in December?
What is the snowiest month in Holly?
How many days does it snow in December in Holly?
What is the month with the shortest days in Holly?
What is the average length of the day in December in Holly?
When is the sunrise / sunset in December in Holly?
How many hours of sunshine does Holly have in December?
What are the months with the lowest UV index in Holly?
What is the UV index intensity in December in Holly?
Average temperature in December
Holly, CO
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in December
Holly, 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 (29.79"Hg).
Average wind speed in December
Holly, CO
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is January (9.9mph).
Average humidity in December
Holly, CO
- Average humidity in December: 59%
The month with the highest relative humidity is January (60%).
The month with the lowest relative humidity is June (44%).
Average rainfall in December
Holly, CO
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is June (1.97").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in December
Holly, CO
- Average rainfall days in December: 2.8 days
The months with the highest number of rainy days are May and July (11.8 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in December
Holly, CO
- Average snowfall in December: 1.42"
The month with the highest snowfall is December (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Holly, CO
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is December (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
Holly, CO
- Average daylight in December: 9h and 4min
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: 6h and 4min
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 24min).
Average sunshine days in December
Holly, CO
- Average sunshine days in December: 24.6 days
The month with the most sunshine days is November (24.8 days).
The month with the least sunshine days is July (16 days).
Average UV index in December
Holly, CO
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Holly, CO
- Average cloud cover in December: 24
The month with the most cloud cover is February (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in December
Holly, 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).
Holly, Colorado, USA
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