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 coldest time of the year is December, with temperatures averaging a high of 39°F (3.9°C) and a low of 22.3°F (-5.4°C).Humidity
In Alta Vista, the average relative humidity in December is 60%.Rainfall
The month with the least rainfall is December, when the rain falls for 2.5 days and typically collects 0.2" (5mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Alta Vista, in December, during 3.5 snowfall days, 0.75" (19mm) of snow is typically accumulated. In Alta Vista, during the entire year, snow falls for 26.7 days and aggregates up to 9.02" (229mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December in Alta Vista, sunrise is at 6:57 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:44 pm MST.
Sunshine
In December, the average sunshine is 6.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
Is December cold?
What is the average humidity in December?
What is the driest month?
How much does it rain in Alta Vista in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Alta Vista have in December?
When are sunrise and sunset in December in Alta Vista?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Alta Vista, CO
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (39°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).
Average pressure in December
Alta Vista, CO
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and December (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Alta Vista, CO
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in December
Alta Vista, CO
- Average humidity in December: 60%
The month with the highest relative humidity is February (63%).
The months with the lowest relative humidity are June and September (46%).
Average rainfall in December
Alta Vista, CO
- Average rainfall in December: 0.2"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.2").
Average rainfall days in December
Alta Vista, CO
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (1.7 days).
Average snowfall in December
Alta Vista, CO
- Average snowfall in December: 0.75"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Alta Vista, CO
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Alta Vista, CO
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 6h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Alta Vista, CO
- Average sunshine days in December: 24.9 days
The month with the most sunshine days is December (24.9 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in December
Alta Vista, 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
Alta Vista, CO
- Average cloud cover in December: 25
The months with the most cloud cover are February and April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in December
Alta Vista, 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).
Alta Vista, Colorado, USA
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